IRC 83 is the foundational statute for every equity compensation arrangement that transfers property to a service provider subject to a vesting schedule. Restricted stock, profits interests, partnership capital interests, and certain options all pass through the IRC 83 framework. The statute asks a deceptively simple question: when does the service provider include the value of the transferred property in gross income? The answer turns on one concept, substantial risk of forfeiture (SRF), and one election, the IRC 83(b) election, that can permanently change the character and timing of compensation income for founders, executives, employees, and partners.
IRC 83 has grown considerably more complex since its enactment. The Tax Cuts and Jobs Act of 2017 added IRC 83(i), giving startup employees of eligible privately held corporations the ability to defer income recognition for up to five years after vesting. Rev. Proc. 2023-29 replaced the informal letter election with IRS Form 15620 for IRC 83(b) elections. Proposed Reg. 1.83-7, issued in 2024, updated the rules governing when options and synthetic equity instruments are subject to IRC 83. The OBBBA's enhancements to IRC 1202 qualified small business stock (QSBS) have made the interaction between IRC 83 and the QSBS exclusion a front-burner issue for venture-backed C corporation founders and employees.
This guide covers the complete IRC 83 statutory framework: the default inclusion rule under IRC 83(a), the substantial risk of forfeiture definition, the IRC 83(b) election and its 30-day deadline, the employer's deduction timing under IRC 83(h), the IRC 83(i) startup deferral, the profits-interest safe harbor under Rev. Proc. 93-27, and the critical distinction between restricted stock (subject to IRC 83) and restricted stock units (subject to IRC 409A). For the procedural deep-dive on completing and filing Form 15620, see the companion guide at IRC 83(b) Election and Form 15620: Practitioner Guide. Verify all citations at IRS.gov before advising clients.
IRC 83(a): The Default Rule -- Taxation at Vesting
IRC 83(a) provides the default rule for property transferred in connection with the performance of services. When property is transferred to any person in connection with the performance of services by that person or any other person, the excess of the fair market value of the property (determined as of the time it becomes substantially vested) over the amount (if any) paid for the property shall be included in the gross income of the person who performed the services. The inclusion occurs in the first taxable year in which the rights of the person having the beneficial interest in such property are transferable or are not subject to a substantial risk of forfeiture.
Broken into its operative elements, IRC 83(a) requires all of the following to be present: (1) a transfer of property, (2) to a person who performs services, (3) in connection with those services, (4) where the property is subject to a substantial risk of forfeiture at the time of transfer and is nontransferable. When all four elements are present, the default rule applies and the service provider does not include anything in income at the date of transfer. Income inclusion is deferred until the property becomes substantially vested, meaning the SRF lapses or the property becomes transferable free of the SRF. The amount included at that point is the FMV of the property at the vesting date, minus any amount the service provider paid to acquire it.
What Qualifies as "Property" Under IRC 83
The term "property" under IRC 83 and Treas. Reg. 1.83-3(e) includes real property, tangible personal property, stock and stock options (when they have a readily ascertainable fair market value at grant under the rules of Reg. 1.83-7), partnership interests (both capital interests and profits interests), and beneficial interests in trusts. "Property" does not include an unfunded, unsecured promise to pay money or property in the future. This distinction separates restricted stock (property, IRC 83 applies) from restricted stock units (unfunded promise, IRC 409A applies). It also separates vested stock options with a readily ascertainable FMV (property, IRC 83 applies at grant) from options with no readily ascertainable FMV (not property for IRC 83 purposes at grant; IRC 83 applies when the option is exercised and stock is received).
Character of the Income Inclusion
The amount included in income under IRC 83(a) at vesting is ordinary compensation income (not capital gain). For employees, it is wages subject to federal income tax withholding, Social Security tax, and Medicare tax. For non-employee service providers (directors, consultants, independent contractors), it is self-employment income or other income reported on Form 1099-NEC. The service provider's tax basis in the property after the inclusion event equals the amount included in income plus any amount actually paid; subsequent appreciation from the vesting date (or the grant date, if the IRC 83(b) election was made) is capital gain. The holding period for capital gain purposes begins on the date the property becomes substantially vested (or on the date of transfer, if the IRC 83(b) election was made).
The "In Connection With Performance of Services" Nexus
Treas. Reg. 1.83-3(f) provides that property is transferred "in connection with the performance of services" if the transfer is related to an employment or independent contractor relationship, or to the performance of services as a director or partner. The nexus requirement is broad. It is not limited to transfers by the employer to the employee; it includes transfers by a parent corporation to employees of a subsidiary, transfers by a partnership to partners who perform services, and transfers by a third party if the arrangement is made in connection with the service provider's compensation. A transfer that does not have a compensatory nexus (a gift, for example) would fall outside IRC 83. Determining whether a nexus to services exists is a facts-and-circumstances inquiry; consult current Treasury regulations and IRS guidance at IRS.gov.
Substantial Risk of Forfeiture: IRC 83(c)(1) and Reg. 1.83-3(c)
The substantial risk of forfeiture (SRF) is the fulcrum on which IRC 83 operates. If no SRF exists (and the property is transferable), the service provider includes the FMV in income at the time of transfer under IRC 83(a), whether or not an IRC 83(b) election is made. If an SRF exists, the service provider defers inclusion until the SRF lapses (absent an 83(b) election). Understanding what constitutes a genuine SRF, and what does not, is therefore one of the most important analytical steps in any equity compensation engagement.
Definition Under IRC 83(c)(1) and Treas. Reg. 1.83-3(c)
Under IRC 83(c)(1), a substantial risk of forfeiture exists if a person's rights to full enjoyment of the property are conditioned upon the future performance of substantial services by any individual, or upon the occurrence of a condition related to the purpose of the transfer (where the possibility of forfeiture is substantial). Treas. Reg. 1.83-3(c) elaborates: a condition related to the purpose of the transfer may include the achievement of certain performance objectives, and the risk must be substantial, not merely nominal or illusory.
The three most commonly encountered types of SRF conditions are:
- Service conditions: The most common SRF. The recipient must continue providing services for a stated period (commonly two to four years on a cliff or graded vesting schedule) or forfeit the property. Courts and the IRS consistently recognize service conditions as creating a genuine SRF, provided the continued service requirement is real and the forfeiture consequence is substantial.
- Performance conditions: A condition requiring achievement of specified performance objectives (revenue, EBITDA, customer metrics) can create an SRF if the probability of forfeiture is genuine given current circumstances. A performance target that is virtually certain to be achieved (or that the employer would never enforce) does not create a substantial risk; the analysis is fact-intensive.
- Non-compete conditions: Under Treas. Reg. 1.83-3(c)(2), a non-compete restriction can create an SRF if it is realistically enforceable under applicable law and if the employer would genuinely seek enforcement. Factors include the geographic scope, the length of the restriction, and the enforceability of non-competes under state law. In states where non-competes are void or narrowly enforced, this type of SRF is difficult to establish.
Illusory Conditions: No SRF
A condition that the employer would never realistically enforce, or that is virtually certain to be satisfied, does not create an SRF under Reg. 1.83-3(c). Treas. Reg. 1.83-3(c)(3) provides that a condition is not a substantial risk if the facts and circumstances indicate that the employer is unlikely to enforce the forfeiture. If an executive receives stock nominally subject to forfeiture upon termination but an existing severance agreement or employment contract effectively removes any real forfeiture risk, the IRS may determine that no SRF exists and the service provider should have included the FMV in income at transfer. Practitioners must examine the complete compensation package, including any side agreements, to determine whether the stated SRF condition is genuine.
Nontransferability Requirement Under IRC 83(a)
The IRC 83(a) deferral applies only if the property is BOTH subject to an SRF AND nontransferable. Under IRC 83(c)(2), property is nontransferable if the rights of a person in the property are subject to a substantial risk of forfeiture in the hands of any transferee. If the property can be freely transferred and the SRF does not travel with it to a new owner, the property is transferable (even if an SRF exists in the hands of the original recipient) and inclusion is immediate. Standard restricted stock grant agreements typically address this by prohibiting transfer during the vesting period and providing that any purported transfer would result in forfeiture.
IRC 83(b) Election: Accelerate Income Recognition at Grant
IRC 83(b) provides the single most important planning tool available for service providers receiving property subject to a substantial risk of forfeiture. By making a timely IRC 83(b) election, the service provider opts out of the default IRC 83(a) vesting-date inclusion rule and instead includes in income the FMV of the property at the time of transfer (minus any amount paid), regardless of the SRF. All subsequent appreciation above the FMV at the grant date is treated as capital gain from the grant date, not as ordinary compensation income at vesting.
How the Election Works
Under IRC 83(b), the service provider must include in gross income for the year of transfer the excess of the FMV of the property at the time of transfer over any amount paid for the property. The amount included is treated as ordinary compensation income in the transfer year. The service provider's basis in the property equals the FMV at grant (plus any amount paid), and the capital gain holding period begins on the date of transfer. If the property is later sold, only the appreciation above the grant-date FMV (less basis) is capital gain.
For restricted stock in a startup with a low current FMV, the income recognized at grant may be nominal or zero (if the stock was acquired for its FMV), making the election cost-efficient from an immediate tax perspective while protecting all future appreciation as capital gain. This is the primary reason the IRC 83(b) election is standard practice in venture-backed startups. The election is also essential for QSBS purposes: see Section 9 of this guide for the interaction with IRC 1202.
Under Rev. Proc. 2023-29, the IRC 83(b) election is made on IRS Form 15620. For the complete Form 15620 filing procedure, the 30-day deadline mechanics, the steps for mailing and retaining copies, and common filing errors to avoid, see the companion guide at IRC 83(b) Election and Form 15620: Practitioner Guide.
Critical Error Warning: The 30-Day IRC 83(b) Election Deadline Is Absolute -- A Missed Election Cannot Be Filed Late Under Any Circumstances
The IRC 83(b) election must be filed within 30 days of the date the property is transferred. This deadline is set by statute and cannot be extended, waived, or excused by the IRS, regardless of the reason for missing it. There is no revenue procedure that allows a late IRC 83(b) election. The IRS has not been granted authority to extend this deadline and has consistently denied requests for late elections. Unlike many other tax elections, there is no "reasonable cause" exception. A practitioner who fails to file the election on time cannot correct the error: the client will be subject to ordinary income tax on the FMV at each vesting date, not the FMV at the grant date, and will not receive capital gain treatment for appreciation occurring between the grant date and each vesting date. This is a planning-level error with potentially very large tax consequences for founders and early employees of rapidly appreciating companies. Calendar the 30-day deadline at the moment of every restricted stock grant and confirm Form 15620 has been filed before the deadline passes. For the complete filing procedure and deadline-compliance checklist, see the companion guide at /section-83b-election-form-15620-restricted-property-practitioner-guide.html.
Irrevocability of the Election
The IRC 83(b) election is irrevocable once filed. The service provider cannot change their mind if the stock price declines or the company fails. Under Treas. Reg. 1.83-2(f), the election may be revoked only with the consent of the Commissioner, and such consent will be granted only in limited circumstances and with the consent evidenced by a formal procedure. In practice, revocations are rarely approved. Practitioners counseling clients before the grant date should model both the election and no-election scenarios to ensure the client understands the irrevocable nature of the commitment.
Forfeiture After an IRC 83(b) Election: No Loss Allowed
The most significant risk of making an IRC 83(b) election is what happens when the property is subsequently forfeited. Under Treas. Reg. 1.83-2(a), if property with respect to which an IRC 83(b) election has been made is later forfeited, the forfeiture is treated as a sale or other disposition for no consideration (or for the amount actually paid, if any). No loss is allowed for the ordinary income that was previously included in gross income at the time of the election.
Practitioner Caution: If Property Is Forfeited After an IRC 83(b) Election, No Loss Is Allowed for the Income Previously Recognized
When an IRC 83(b) election is made, the service provider pays current tax on the FMV at grant. If the property is later forfeited before vesting (for example, the employee terminates employment voluntarily or is terminated for cause), the prior inclusion in income does not generate a loss deduction. The only amount recoverable upon forfeiture is any amount the service provider actually paid to acquire the property, which in startup contexts is often nominal or zero. For illustration: if a recipient included a certain amount of grant-date FMV in income (as an illustrative example only), paid tax on that income, and then forfeited the stock two years later, the recipient would have no loss to offset the tax already paid. This outcome is more likely when the company's stock was valued above par at the time of the grant, or when the recipient is a later-stage employee receiving stock at a higher valuation than a founder's early grant. Practitioners must model the forfeiture scenario when advising clients with meaningful employment risk, a performance-condition vesting schedule, or early-stage grant dates where company survival is uncertain. Verify the applicable rules in Treas. Reg. 1.83-2(a) at IRS.gov.
The forfeiture-loss rule reflects a deliberate policy choice in IRC 83: the 83(b) election is a bet on future appreciation. By accelerating inclusion, the service provider converts what would otherwise be ordinary income at vesting into a lower-taxed capital gain (by capping the ordinary income at the grant-date FMV). But if the bet goes wrong and the property is forfeited, the ordinary income tax already paid is gone. The rule is sometimes described as a "heads I win big, tails I still pay tax" structure: the election protects the upside but does not insure against the downside.
For founders receiving stock at a very early stage (where the per-share FMV is minimal because the company has just been incorporated), the forfeiture risk is often acceptable: the income recognized at grant is negligible, and the upside protection is substantial. For later-stage employees or executives receiving grants at meaningful valuations, the forfeiture risk warrants a careful risk-benefit analysis before making the election.
IRC 83(h): The Employer's Deduction -- Timing and Withholding Traps
IRC 83(h) governs the timing of the employer's (or other transferor's) deduction for property transferred in connection with the performance of services. The statute provides that the amount deductible by the employer is the amount included in the service provider's gross income under IRC 83. The deduction is allowed in the employer's taxable year in which (or with which) the taxable year of the service provider in which the amount is included in gross income ends. In most situations, where both employer and service provider are calendar-year taxpayers, this means the employer's deduction is available in the same calendar year that the service provider includes the income.
Mirror Principle: Deduction Matches Inclusion
The employer's deduction mirrors the service provider's income inclusion in both amount and timing. If the service provider makes an IRC 83(b) election, the employer's deduction is available in the year of transfer (when the service provider includes the grant-date FMV). If no IRC 83(b) election is made, the employer's deduction is available in the year the property vests (when the service provider includes the vesting-date FMV). The employer deducts the same amount that the service provider includes, not the FMV at any other date. This is significant for fast-growing companies: if the stock appreciates substantially between grant and vesting, the employer's IRC 83(h) deduction at vesting (absent an 83(b) election) will be much larger than it would have been at the grant date. The deduction is subject to the IRC 162 reasonableness standard and any applicable IRC 162(m) limitation on excessive compensation.
Withholding and Form W-2 Obligations
For employee service providers, the employer is required to withhold federal income tax, Social Security, and Medicare taxes on the amount included in the employee's income under IRC 83. This withholding obligation arises at the time of income inclusion (vesting date under the default rule, or grant date if an IRC 83(b) election is made). A common complication: restricted stock that vests is a non-cash form of compensation. The employer must arrange for the employee to satisfy the withholding obligation in cash (through payroll withholding or net settlement, where a portion of the vesting shares are withheld to cover taxes), or the employer must independently remit withholding.
The income must be included on the employee's Form W-2 (or non-employee's Form 1099-NEC) in the year of inclusion. Failure by the employer to properly include the income on Form W-2 (or 1099) and to withhold and remit taxes can jeopardize the employer's IRC 83(h) deduction. Under IRC 83(h) and the related regulations, the employer's deduction may be disallowed or deferred if the employer fails to satisfy applicable reporting and withholding requirements. Verify current withholding, reporting, and deduction requirements at IRS.gov and in current Treasury regulations before implementing any equity compensation plan.
IRC 83(i): Qualified Equity Grant Deferral for Startup Employees
IRC 83(i), added by the Tax Cuts and Jobs Act of 2017, provides a mechanism for certain employees of eligible privately held corporations to defer income inclusion on qualified equity grants for up to five years beyond the year the equity first becomes substantially vested. The provision addresses a structural problem for startup employees: restricted stock or stock option exercises in rapidly appreciating private companies generate large income inclusions with no liquid market to sell shares and raise cash to pay the resulting tax. IRC 83(i) allows qualifying employees to defer the tax until a liquidity event or the expiration of the deferral period.
Eligible Corporations and Equity Grants
To be an "eligible corporation" under IRC 83(i)(2), the entity must be a domestic corporation that: (1) does not have any class of stock readily tradeable on an established securities market (i.e., it is privately held at the time of the grant), and (2) has a written equity grant plan under which, in the calendar year of the grant, at least 80% of all full-time employees of the corporation (and any related entities in the same controlled group) who are U.S. residents receive grants of stock options or restricted stock units with the same rights and privileges. The 80% coverage test is applied at the entity level and requires that qualified equity grants be broadly distributed among the workforce, not just reserved for executives.
Eligible Employees
Not all employees of an eligible corporation can use IRC 83(i). The following categories are excluded from eligibility under IRC 83(i)(3): (1) the CEO or CFO (or any person serving in that capacity at any time during the taxable year), (2) a 1% owner of the corporation (by vote or value) at any time during the calendar year, (3) any individual who was a 1% owner in any of the 10 preceding calendar years, (4) a family member of any such person, and (5) any individual who is (or was) one of the four highest-compensated officers of the corporation for the taxable year or for any of the 10 preceding taxable years. These exclusions are designed to prevent the deferral from benefiting the most highly compensated executives while protecting ordinary employees.
How the Deferral Works and Employer Notification Requirements
An eligible employee can elect under IRC 83(i) to defer the income inclusion that would otherwise arise at vesting (or upon the exercise of a qualified stock option) for up to five calendar years after the taxable year in which the equity first becomes substantially vested. The deferral applies only to the income that would have been recognized at vesting; it does not affect any FICA (Social Security and Medicare) tax, which remains due in the year of vesting under the normal rules.
Critically, the employer must notify each eligible employee at the time the qualified equity grant becomes substantially vested (or is exercised) that the employee is eligible to make the IRC 83(i) election. The notice must explain the consequences of failing to make the election and the requirements for the election to be effective. Failure by the employer to provide the required notice carries penalties under IRC 83(i)(6). The election must be made not later than 30 days after the equity first becomes substantially vested.
Practitioner Caution: IRC 83(i) Deferral Ends Immediately at IPO -- The Deferred Income Becomes Taxable When the Company Goes Public
Under IRC 83(i)(1)(B), the IRC 83(i) deferral period ends, and the deferred income must be included immediately, upon the first occurrence of any of the following mandatory inclusion events: (1) the first date the corporation's stock becomes readily tradeable on an established securities market (an IPO or listing); (2) the date the employee's employment relationship ends (resignation, termination, or retirement); (3) the date the equity becomes readily tradeable on an established securities market (for example, if the corporation undergoes a reverse merger); (4) the date the corporation revokes its status as an eligible corporation; or (5) the fifth anniversary of the year the equity first became substantially vested. The IPO trigger is the most significant planning concern: an employee who elected to defer income inclusion under IRC 83(i) will face a mandatory income recognition event at precisely the moment the company goes public, often when the stock is at its highest pre-liquidity value. The deferred income may be recognized before the employee can sell shares in the public market, creating the same liquidity problem that IRC 83(i) was designed to solve. Practitioners advising startup employees contemplating IRC 83(i) elections must model the IPO income recognition scenario carefully. Verify current IRC 83(i) requirements and mandatory inclusion events at IRS.gov and consult independent counsel before advising clients.
Form W-2 Reporting of Deferred Amounts
Employers are required to report deferred amounts under IRC 83(i) on Form W-2 using the applicable Box 12 code. Specifically, the aggregate amount deferred as of the close of the taxable year (and each succeeding year until the mandatory inclusion event) must be reported. The employer remains liable for income tax withholding on the deferred amounts when they are ultimately included in income. For detailed W-2 reporting requirements under IRC 83(i), verify current IRS Instructions for Form W-2 and Notice 2018-97 at IRS.gov.
Profits Interests in Partnerships: The Rev. Proc. 93-27 Safe Harbor
Partnerships and limited liability companies taxed as partnerships frequently compensate service providers with profits interests rather than salary or equity in a corporation. A profits interest is a partnership interest that entitles the holder to a share of future profits and appreciation, but does not entitle the holder to any share of the partnership's existing value as of the grant date. This structure is favored in private equity, venture capital, and startup ecosystems because it provides a mechanism to deliver a substantial economic interest to service providers without creating immediate ordinary income.
The Safe Harbor: Revenue Procedure 93-27 and Rev. Proc. 2001-43
Rev. Proc. 93-27 (modified by Rev. Proc. 2001-43) provides that the IRS will not treat the receipt of a profits interest as a taxable event if three conditions are met: (1) the profits interest is not a capital interest (meaning the service provider would receive nothing if the partnership were liquidated at FMV at the time of grant, because the distribution waterfall has not yet been reached), (2) the profits interest is not related to a substantially certain and predictable stream of income from partnership assets (such as income from a high-grade fixed-income portfolio or a net lease with a creditworthy tenant), and (3) the service provider does not dispose of the profits interest within two years of receipt.
When all three conditions are satisfied, no income is recognized at grant, regardless of whether the profits interest is subject to a vesting schedule. The safe harbor also provides that the grant of a profits interest with a vesting schedule will not be treated as a taxable event, and that the interest is treated as outstanding from the date of grant for capital account and partnership tax purposes. Rev. Proc. 2001-43 clarified that the safe harbor applies whether or not the profits interest is subject to an SRF at the time of grant.
Capital Interest vs. Profits Interest: The Liquidation Test
Whether a partnership interest is a capital interest or a profits interest is determined by applying the liquidation test: if the partnership were to liquidate at FMV on the date the interest is granted and distribute the proceeds in accordance with the partnership agreement, would the service provider receive any distribution? If yes, the interest is (at least in part) a capital interest, and the safe harbor does not fully apply. If no, the interest is a pure profits interest and qualifies for the safe harbor. Determining current FMV of partnership assets, and modeling the liquidation distribution waterfall, is the practitioner's primary task in evaluating whether a proposed profits interest qualifies for the safe harbor. See the partnership contribution and nonrecognition guide at IRC 721, 722, and 723 partnership contribution, basis, and nonrecognition for the partnership interest context.
Practitioner Caution: The Profits-Interest Safe Harbor Does Not Start the QSBS Clock -- An IRC 83(b) Election May Still Be Needed Even When No Income Is Included
The Rev. Proc. 93-27 safe harbor eliminates the income inclusion event at grant for a qualifying profits interest -- but it does not address the capital gain holding period or the QSBS eligibility clock. If the profits interest is subject to a vesting schedule, the recipient may want to consider whether an IRC 83(b) election is beneficial even when no income would be included at grant (because the profits interest has zero current liquidation value). The election, if made, starts the capital gain holding period from the grant date rather than from the vesting date. This can be important if: (a) the partnership later converts to a C corporation and the holders receive QSBS-eligible stock (the holding period for QSBS purposes runs from the date the stock is treated as acquired, which may be the conversion date for convertible interests), or (b) the recipient anticipates selling vested profits interests within one year of vesting and wants long-term capital gain treatment from the grant date. Even when the 83(b) election produces no current income, a protective election filed within 30 days of the grant can have meaningful holding-period consequences. Verify current IRS guidance on profits-interest elections and capital gain holding periods at IRS.gov; consult independent counsel before advising clients.
IRC 83 Applied to Capital Interests and the IRC 707 Intersection
When a service provider receives a capital interest (not a profits interest) from a partnership in exchange for services, IRC 83 applies directly and the service provider includes in gross income the FMV of the capital interest received (minus any amount paid). There is no safe harbor comparable to Rev. Proc. 93-27 for capital interests. Additionally, practitioners must examine whether the service-for-equity transaction triggers the disguised sale rules under IRC 707, particularly if the service provider receives a distribution from the partnership around the same time as the capital interest grant. See the guide at IRC 707 disguised sales and guaranteed payments for the intersection of IRC 83 and the disguised sale rules.
Restricted Stock vs. RSUs: A Critical Distinction
One of the most common errors in equity compensation practice is conflating restricted stock with restricted stock units (RSUs). The two instruments share a vesting schedule and a name with the word "restricted," but they are governed by entirely different statutory frameworks and have dramatically different planning options. Understanding this distinction is foundational to advising clients on equity compensation.
Critical Error Warning: RSUs Are NOT Property Under IRC 83 at Grant and Cannot Receive an IRC 83(b) Election -- They Are Subject to IRC 409A Instead
Restricted stock units (RSUs) are unfunded, unsecured employer promises to deliver stock (or cash equivalent) at a future vesting date. Because no property is transferred at the time of the RSU grant, IRC 83 does not apply at grant: there is nothing to transfer, and therefore no transfer of property has occurred. As a result, an IRC 83(b) election is NOT available for RSUs. Any purported IRC 83(b) election filed for an RSU grant is a nullity. RSUs are instead governed by IRC 409A as a form of nonqualified deferred compensation. Under IRC 409A, the RSU plan must comply with specific deferral election, distribution trigger, and timing rules; failure to comply subjects the entire amount deferred to immediate income inclusion, a 20% additional excise tax, and interest. Income from RSUs is recognized only when the stock or cash is actually delivered at vesting (assuming the plan is structured as a "short-term deferral" under IRC 409A). A practitioner who files a purported 83(b) election for RSU grants has not only wasted the filing but has failed to advise the client on the IRC 409A compliance requirements that actually govern the RSU plan. Document the distinction carefully in every equity compensation engagement, confirm the instrument type in the grant agreement, and never file an IRC 83(b) election for an RSU without first verifying that the instrument is restricted stock (actual stock with forfeiture conditions), not an RSU (an unfunded promise to deliver stock). Verify current IRC 409A requirements and the restricted stock versus RSU distinction in the current Treasury regulations at IRS.gov.
Side-by-Side Comparison
The table below sets out the key differences between restricted stock and RSUs across the dimensions most important to practitioners:
| Feature | Restricted Stock | Restricted Stock Units (RSUs) |
|---|---|---|
| Governing statute | IRC 83 | IRC 409A (nonqualified deferred compensation) |
| What is transferred at grant | Actual shares of stock (property) | An unfunded promise to deliver stock (not property) |
| IRC 83(b) election available | Yes (within 30 days of grant) | No |
| Income inclusion timing (default) | Vesting date (FMV at vesting minus amount paid) | Delivery of stock or cash at vesting (IRC 409A short-term deferral) |
| Capital gain holding period starts | Vesting date (or grant date with 83(b) election) | Date stock is delivered at vesting |
| QSBS (IRC 1202) eligibility | Yes, if 83(b) election made; each vesting tranche separately tested if not | QSBS holding period runs from delivery date |
| Shareholder rights (voting, dividends) at grant | Yes (if issued; varies by plan) | No (recipient is a creditor, not a shareholder, until delivery) |
IRC 83 and IRC 1202 QSBS: The 83(b) Election and the 5-Year Holding Period
IRC 1202 provides a potential exclusion of 50% to 100% of gain on the sale of qualified small business stock (QSBS) issued by a domestic C corporation, provided the stock has been held for more than five years, was acquired at original issue, and the corporation meets the active business and gross assets tests. The OBBBA's enhancements to IRC 1202 have increased the gain exclusion and raised the gross assets threshold, making QSBS-eligible restricted stock grants a focal point of startup equity compensation planning. For the complete IRC 1202 framework, see the guide at IRC 1202 QSBS gain exclusion and active business requirements.
Practitioner Note: Founders with QSBS-Eligible Stock Must File the IRC 83(b) Election to Start the 5-Year Holding Period from the Grant Date
For restricted stock that qualifies as QSBS under IRC 1202, the IRC 83(b) election is not just a planning tool for ordinary-income reduction: it is the mechanism that starts the five-year QSBS holding period running from the grant date. Under IRC 1202(f), the holding period for QSBS begins on the date the stock is acquired. If no IRC 83(b) election is made, each vesting tranche is treated as separately acquired for tax purposes, with its own holding period beginning on the vesting date rather than the grant date. A four-year vesting schedule without an 83(b) election means the last vesting tranche does not begin its five-year QSBS holding period until year four, pushing the potential IRC 1202 exclusion date out to year nine from the original grant date. With a timely IRC 83(b) election filed within 30 days of the grant, the entire block of stock is treated as acquired on the grant date, the five-year QSBS clock runs from that date, and the original-issue requirement is tested at the grant date. The practical consequence: founders of QSBS-eligible C corporations who file a timely IRC 83(b) election may be eligible for the IRC 1202 exclusion five years from the grant date; founders who do not file the election face a more complex per-tranche analysis. This interaction makes the IRC 83(b) election effectively mandatory for founders of venture-backed C corporations seeking maximum IRC 1202 benefit. Verify the current IRC 1202 requirements, OBBBA modifications, and the interaction with IRC 83 at IRS.gov and in current Treasury guidance; consult independent counsel before advising on QSBS elections.
Additionally, because IRC 1202 requires stock to be acquired at "original issue," any event that is treated as a new acquisition for IRC 83 purposes (such as a vesting event absent an 83(b) election) could potentially raise questions about whether the stock was acquired at original issue or whether the vesting date constitutes a secondary-market acquisition for purposes of the IRC 1202 analysis. Practitioners advising QSBS-eligible companies should document that restricted stock grants constitute original issuances and that any per-tranche vesting treatment under the no-election rule does not convert the subsequent vesting into a secondary acquisition. Verify this position in current Treasury guidance and case law before relying on it.
Options, Warrants, and Prop. Reg. 1.83-7: When Does IRC 83 Apply?
Under current law and Treas. Reg. 1.83-7, stock options and warrants received in connection with services are subject to IRC 83 only if they have a "readily ascertainable fair market value" at the time of grant. For most non-publicly-traded compensatory stock options, the FMV is not readily ascertainable at grant, and therefore IRC 83 does not apply at the grant date. Instead, IRC 83 applies when the option is exercised and the underlying stock (which is "property") is transferred to the service provider.
Nonqualified Stock Options (NQSOs) vs. Incentive Stock Options (ISOs)
Nonqualified stock options (NQSOs) are not ISOs under IRC 422. When an NQSO with no readily ascertainable FMV at grant is exercised, the service provider recognizes ordinary income under IRC 83(a) equal to the spread (the excess of the FMV of the underlying stock at exercise over the exercise price). This spread is ordinary compensation income subject to withholding (for employees). The employer gets a corresponding IRC 83(h) deduction in the same year. Incentive stock options (ISOs) under IRC 422 have a different statutory treatment: an ISO exercise does not trigger ordinary income inclusion under IRC 83(a) for regular tax purposes (though it is an adjustment item for alternative minimum tax purposes under IRC 56). For the complete ISO and NQSO framework and the AMT intersection, see the guide at IRC 422 ISOs and non-qualified stock options.
Proposed Reg. 1.83-7 (2024) and Synthetic Equity
Proposed Reg. 1.83-7, issued in 2024, updates the rules for when options and warrants are subject to IRC 83 and provides clarification on the treatment of synthetic equity instruments, including stock appreciation rights (SARs) and phantom equity plans. The proposed regulations address when a synthetic equity instrument constitutes "property" for IRC 83 purposes (and therefore when an 83(b) election might be available) versus when the instrument is an unfunded promise subject to IRC 409A. These are proposed regulations as of the date of this guide; verify finalization status and confirm whether final regulations have been issued at IRS.gov before advising clients on option or synthetic equity arrangements. Relying on proposed regulations carries the risk that the final rules may differ.
IRC 83 Framework: Equity Instrument Reference Table
The table below summarizes how IRC 83 applies to the most commonly encountered equity compensation instruments. All information is for general orientation only. Verify current statutory and regulatory requirements at IRS.gov and consult independent counsel before advising clients on any specific instrument or transaction.
| Equity Instrument | Subject to IRC 83 | 83(b) Election Available | Timing of Income Inclusion | Character of Gain | Key Planning Issue |
|---|---|---|---|---|---|
| Restricted Stock | Yes, directly | Yes (within 30 days of grant) | Vesting date (default); grant date (if 83(b) elected) | Ordinary income at inclusion; capital gain on post-inclusion appreciation | 83(b) election critical for QSBS holding period and capping ordinary income at grant-date FMV |
| Restricted Stock Units (RSUs) | No (at grant; IRC 83 applies at delivery of shares) | No (no property transferred at grant) | Delivery of stock at vesting (IRC 409A short-term deferral) | Ordinary income at delivery; capital gain from delivery date | IRC 409A compliance required; no 83(b) election available; QSBS holding period from delivery |
| NQSOs -- at Grant (no readily ascertainable FMV) | No (no inclusion at grant) | N/A (no property transferred at grant) | No inclusion at grant | N/A at grant | IRC 83 deferred to exercise; IRC 409A compliance critical for below-FMV exercise price |
| NQSOs -- at Exercise | Yes (stock received at exercise is property) | Yes (if stock received is subject to SRF at exercise) | Exercise date (spread included as ordinary income) | Ordinary income (spread); capital gain on post-exercise appreciation | Withholding on spread; basis equals FMV at exercise; holding period starts at exercise |
| Incentive Stock Options (ISOs) | Not under IRC 83(a) at exercise (IRC 422 governs) | Generally N/A (IRC 422 provides its own framework) | No regular income at exercise; AMT adjustment may arise; inclusion on disqualifying disposition | Capital gain if holding period met; ordinary income on disqualifying disposition | AMT preference at exercise; disqualifying disposition rules; IRC 422 holding period requirements |
| Profits Interests (Partnership) | Yes (but safe harbor avoids inclusion at grant) | Yes (protective election advisable for holding period) | No inclusion at grant if Rev. Proc. 93-27 safe harbor met | Capital gain on exit (after holding period); ordinary income on guaranteed payments | Safe harbor conditions must be satisfied; 83(b) election starts holding period even with no income |
| Stock Appreciation Rights (SARs) | Generally no (unfunded right; Prop. Reg. 1.83-7 clarifies treatment) | Generally no | Settlement date (cash or stock delivered) | Ordinary income at settlement | IRC 409A compliance; Prop. Reg. 1.83-7 status should be confirmed; no capital gain treatment |
| Phantom Equity | No (unfunded contractual right, not property) | No | Payment date (cash settlement) | Ordinary income at payment | IRC 409A compliance required; no equity ownership; no capital gain treatment |
| Convertible Notes Received for Services | Yes (debt instrument with FMV is property) | Yes (if subject to SRF at grant) | FMV at grant (or vesting if SRF and no 83(b) election) | Ordinary income at inclusion; OID rules apply to accrued interest | FMV determination for discount notes is complex; OID rules under IRC 1272 also apply |
| SAFEs Received for Services | Uncertain; FMV at grant may be low or zero; IRS has not issued formal guidance | Uncertain; protective election may be advisable | Uncertain; likely at conversion to equity under current analysis | Ordinary income at conversion or settlement; confirm with IRS guidance | No definitive IRS ruling; characterization depends on SAFE terms; verify at IRS.gov |
| Carried Interest (Partnership) | Yes (partnership interest is property; profits-interest safe harbor often applies) | Yes (protective election advisable) | No inclusion at grant if Rev. Proc. 93-27 safe harbor met | Long-term capital gain on exit; IRC 1061 three-year holding period for API income | IRC 1061 applicable partnership interest (API) rules apply to carried interest distributions |
| Partnership Capital Interests (for Services) | Yes (FMV at grant included in income; no safe harbor) | Yes (if subject to SRF at grant) | FMV at grant (or vesting under default rule) | Ordinary income at inclusion; capital gain on post-inclusion appreciation | IRC 707 disguised sale analysis required; Rev. Proc. 93-27 safe harbor does NOT apply |
Note: This table provides a general orientation only. IRC 83 analysis is facts-and-circumstances specific. Verify all current requirements and exceptions at IRS.gov and consult independent counsel before advising on any specific transaction. Proposed Reg. 1.83-7 (2024) finalization status should be confirmed before relying on the SAR and synthetic equity rows.
Frequently Asked Questions: IRC 83 Property Transferred for Services
The following questions address the most common practitioner and client questions about IRC 83. Answers reference the applicable statute, regulation, and revenue procedure, and are hedged to reflect that the law may change. Verify at IRS.gov before advising.
What is a "substantial risk of forfeiture" under IRC 83?
Under IRC 83(c)(1) and Treas. Reg. 1.83-3(c), a substantial risk of forfeiture exists when a service provider's right to property is conditioned on the future performance of substantial services, or on the occurrence of a condition related to the purpose of the transfer, where the possibility of forfeiture is substantial and genuine. The most common form is a service condition requiring continued employment for a stated period. A performance condition (achieving specified revenue or profit targets) can qualify if the forfeiture probability is real. An illusory condition, or one the employer would not realistically enforce, does not create an SRF. The analysis is inherently facts-and-circumstances specific under Reg. 1.83-3(c). Verify current requirements at IRS.gov.
When is restricted stock income included in gross income under IRC 83?
Under the default rule of IRC 83(a), the service provider includes income in the first taxable year in which the restricted stock is either no longer subject to a substantial risk of forfeiture or is transferable free of the forfeiture condition (whichever occurs first). This is the "vesting date." The amount included is the excess of the FMV at vesting over any amount paid for the stock. The income is ordinary compensation income subject to withholding. If a valid IRC 83(b) election was filed within 30 days of the grant, income is instead included at the grant date using the grant-date FMV. Verify current withholding obligations at IRS.gov.
How does the IRC 83(b) election work and what is the deadline?
The IRC 83(b) election allows the service provider to include in income the grant-date FMV (minus any amount paid) in the year of transfer, rather than waiting until vesting. All post-grant appreciation becomes capital gain from the grant date. The election must be made on IRS Form 15620 (per Rev. Proc. 2023-29) within 30 days of the transfer date. The 30-day deadline is absolute: it cannot be extended under any circumstances. The election is irrevocable. For the complete Form 15620 filing procedure, see the companion guide at IRC 83(b) Election and Form 15620: Practitioner Guide.
What happens if restricted stock is forfeited after an IRC 83(b) election?
Under Treas. Reg. 1.83-2(a), if restricted stock is forfeited after an IRC 83(b) election has been made, no loss deduction is allowed for the ordinary income that was previously included in gross income. The only amount recoverable upon forfeiture is any purchase price actually paid. The income tax previously paid on the grant-date inclusion is not refunded and cannot be offset by a loss. This is the primary risk of the 83(b) election for recipients at meaningful valuations with real forfeiture probability. Verify the forfeiture loss rules at IRS.gov before counseling clients.
Are restricted stock units (RSUs) subject to IRC 83?
No. RSUs are unfunded, unsecured promises to deliver stock at a future vesting date. Because no property is transferred at grant, IRC 83 does not apply and an IRC 83(b) election is not available. RSUs are instead governed by IRC 409A as nonqualified deferred compensation. Income is recognized when stock or cash is actually delivered at vesting. Practitioners must confirm whether an award is actual restricted stock (subject to IRC 83) or an RSU (subject to IRC 409A) before advising on election options. Verify current IRC 409A compliance requirements at IRS.gov.
How do profits interests in a partnership avoid taxation at grant?
Under Rev. Proc. 93-27 (as modified by Rev. Proc. 2001-43), a profits interest granted for services is not taxable at grant if: (1) it is not a capital interest (the service provider would receive nothing on immediate liquidation at FMV), (2) it is not related to a substantially certain and predictable stream of income, and (3) the service provider does not dispose of it within two years of receipt. If all three conditions are met, no income is recognized at grant. However, the safe harbor does not preclude the benefit of a protective IRC 83(b) election, which starts the capital gain holding period from the grant date. Verify current safe harbor requirements at IRS.gov and consult independent counsel before advising.
What is the IRC 83(i) qualified equity grant deferral?
IRC 83(i), added by the TCJA in 2017, allows eligible employees of privately held corporations with a qualifying broad-based equity plan to defer income recognition on qualifying stock grants for up to five years after vesting. Ineligible employees include the CEO, CFO, 1% owners, and the four highest-compensated officers in the prior 10 years. The employer must notify eligible employees of the deferral option at the time the equity vests. Mandatory income inclusion events include an IPO, cessation of employment, the equity becoming readily tradeable, revocation of eligible corporation status, or the passage of five years. FICA taxes remain due in the year of vesting regardless of the 83(i) election. Verify current requirements at IRS.gov and consult independent counsel.
How does IRC 83 interact with IRC 1202 QSBS?
For restricted stock that may qualify as QSBS under IRC 1202, the IRC 83(b) election is critical because it starts the five-year QSBS holding period running from the grant date rather than from each vesting date. Without the election, each vesting tranche is separately acquired for tax purposes and must independently satisfy the five-year holding period requirement, potentially extending the QSBS eligibility window for later-vesting tranches. The OBBBA's enhancements to IRC 1202 have increased the planning stakes. Founders and early employees of venture-backed C corporations should consider the IRC 83(b) election a near-mandatory step for QSBS preservation. Verify current QSBS requirements and OBBBA changes at IRS.gov; consult independent counsel before relying on IRC 1202 exclusion projections.
Related Practitioner Guides
The following guides cover the statutes and issues most closely linked to IRC 83 in equity compensation and partnership tax practice. Practitioners advising on restricted stock, options, profits interests, or QSBS should review these guides in conjunction with this IRC 83 framework.
- IRC 83(b) Election and Form 15620: Practitioner Guide -- The companion procedural guide covering the mechanics of filing Form 15620 (the new election form under Rev. Proc. 2023-29), the 30-day deadline compliance checklist, the copy retention requirements, and the most common filing errors that result in invalid elections. The IRC 83 statutory guide and the 83(b) election procedural guide are designed to be read together.
- IRC 422 ISOs and Non-Qualified Stock Options: Practitioner Guide -- ISOs are governed by IRC 422 and are not subject to IRC 83(a) income inclusion at exercise under specific conditions; NQSOs are subject to IRC 83(a) income inclusion at exercise (the spread is ordinary income). Practitioners must classify options under IRC 422 and IRC 83 together for any equity compensation plan, and must understand the AMT implications of ISO exercise.
- IRC 1202 QSBS Gain Exclusion and Active Business Requirements: Practitioner Guide -- Restricted stock in a QSBS-eligible company must be acquired at original issue for the five-year holding period to begin; the IRC 83(b) election starts the QSBS holding period running from the grant date rather than the vesting date; without the election, each vesting tranche is separately tested for the five-year holding period and the original-issue requirement under IRC 1202.
- IRC 721, 722, and 723 Partnership Contribution, Basis, and Nonrecognition: Practitioner Guide -- The profits-interest safe harbor under Rev. Proc. 93-27 relies on the characterization of the profits interest as neither an IRC 721 contribution nor property with FMV at grant; practitioners applying IRC 83 to partnership equity must understand the relationship between the safe harbor and the IRC 721 nonrecognition rules.
- IRC 707 Disguised Sales and Guaranteed Payments: Practitioner Guide -- When a capital interest (not a profits interest) is granted to a service provider in exchange for services, IRC 83 requires income inclusion; if the capital interest is also structured to look like a contribution of services followed by a distribution, the IRC 707 disguised sale rules may apply; practitioners advising on service-for-equity transactions in partnerships must analyze both IRC 83 and IRC 707.
Disclaimer
This guide is published for general informational and educational purposes only. It does not constitute legal, tax, or accounting advice and does not establish an attorney-client or CPA-client relationship. The information reflects the law as of July 2026 and may not reflect subsequent statutory, regulatory, or administrative changes. Every IRC 83 situation is facts-and-circumstances specific. Readers should verify all citations, statutes, and regulatory references at IRS.gov and consult independent qualified counsel before advising clients or making any tax elections. America's Tax Professionals does not represent clients before the IRS or in court and makes no representation or warranty as to the accuracy or completeness of this guide.