Overview: The Federal Gift Tax System
The federal gift tax, codified in Chapter 12 of the Internal Revenue Code (IRC 2501 through 2524), is a transfer tax imposed on the privilege of making gratuitous transfers of property during the donor's lifetime. It operates as the companion to the federal estate tax under Chapter 11: together, they form a unified transfer tax system designed to tax wealth transfers at death and during life at the same rate structure using the same applicable exclusion amount.
Three sections carry most of the analytical weight for practitioners advising individual donors:
- IRC 2501 -- defines what transfers are subject to the gift tax and who bears the obligation.
- IRC 2502 -- prescribes the cumulative lifetime computation method and the rate table.
- IRC 2505 -- grants a credit against gift tax equal to the applicable credit amount (derived from the applicable exclusion amount under IRC 2010(c)), unified with the estate tax credit.
The One Big Beautiful Act (OBBBA) significantly reshaped this system by permanently raising the applicable exclusion amount to $15 million per person (indexed for inflation; verify the current indexed amount at IRS.gov and consult independent counsel, as these provisions are recently enacted and implementation guidance may be pending). For most donors, that credit absorbs all lifetime gifts, making Form 709 a reporting and tracking function rather than a tax-payment event. For large-estate clients, the computation mechanics and the interaction with the estate tax remain critical planning territory.
Dollar amounts in this guide -- annual exclusion, applicable exclusion amount, rate brackets -- are indexed for inflation and updated annually. Verify every figure at IRS.gov and in current IRS publications before advising any client. No figure here should be treated as authoritative for a specific tax year without independent verification.
IRC 2501: Imposition of the Gift Tax
IRC 2501(a)(1) imposes a tax on the transfer of property by gift for each calendar year by any individual. "Individual" means a natural person; corporations, trusts, and other entities are generally not subject to gift tax as donors (though entity-level transactions may involve deemed gifts). Verify current treatment of entity-level transfers and attribution at IRS.gov.
Scope: US Citizens and Residents vs. Nonresident Aliens
US citizens and residents are subject to gift tax on transfers of all property, wherever situated -- including foreign real estate, foreign accounts, and foreign business interests. Nonresident aliens, by contrast, are subject to gift tax only on transfers of US-situs property under IRC 2501(a)(2). For nonresident aliens, the situs of intangible property (stock in a US corporation, for example) and real property located in the US are within scope; foreign-situs property is not. Verify the current US-situs rules, treaty modifications, and any recently issued IRS guidance on specific asset classes at IRS.gov before advising nonresident alien donors.
What Constitutes a "Gift" under IRC 2512
A transfer of property is treated as a gift to the extent it is made for less than full and adequate consideration in money or money's worth. This is an objective standard: donative intent is not required. If a seller transfers property to a buyer for a price that is less than the property's fair market value (FMV), the difference is a gift -- even if the parties negotiated at arm's length with no intent to benefit the buyer. FMV is defined as the price a willing buyer would pay a willing seller, neither under compulsion, both reasonably informed.
Transfers for consideration that is not "in money or money's worth" -- such as love and affection, services of an intangible or personal nature, or a moral obligation -- are not considered adequate consideration and do not reduce the taxable gift. Verify current IRS and regulatory guidance on consideration adequacy at IRS.gov.
Excluded Transfers under IRC 2501
Not all gratuitous transfers constitute taxable gifts. The following are excluded from gift tax at the imposition level (verify current exclusion rules at IRS.gov):
- Transfers to political organizations: Transfers to political organizations as defined in IRC 527(e)(1) are excluded under IRC 2501(a)(5). This includes contributions to campaigns, political action committees, and party committees organized under IRC 527. Verify current definitions and limitations at IRS.gov.
- Certain transfers in ordinary course of business: A transfer made in the ordinary course of business (that is, a transaction that is bona fide, at arm's length, and free from donative intent) is not a gift. Verify how this exception interacts with below-market transfers in business contexts at IRS.gov.
Exclusions from Taxable Gifts
Even when a transfer falls within IRC 2501's scope, two statutory exclusions can remove all or part of it from the taxable gift base before the IRC 2502 computation runs.
Annual Exclusion: IRC 2503(b)
IRC 2503(b) excludes from taxable gifts the first $10,000 (indexed) per donee per calendar year. The 2026 indexed amount is $19,000 per donee; verify the current amount at IRS.gov. The exclusion applies per donee: a donor who makes gifts to ten different donees may exclude up to the annual exclusion amount per donee, with no limit on the number of donees. The exclusion applies only to gifts of a present interest -- a gift of a future interest (such as a transfer to a trust where the beneficiary cannot currently demand distribution) does not qualify unless the trust contains Crummey withdrawal rights or other present-interest provisions that satisfy the regulatory requirements. Verify current present-interest requirements and Crummey trust rules at IRS.gov.
The annual exclusion is a use-it-or-lose-it benefit: any unused exclusion for a calendar year cannot be carried forward to future years.
Tuition and Medical Exclusion: IRC 2503(e)
IRC 2503(e) provides an unlimited exclusion for two categories of direct payments, separate from and in addition to the annual exclusion under IRC 2503(b):
- Tuition: Amounts paid directly to an educational organization (as defined in IRC 170(b)(1)(A)(ii)) for the tuition of any individual. This covers tuition for elementary, secondary, and post-secondary education. It does not cover room and board, books, supplies, or other fees -- only tuition. The payment must go directly to the institution, not to the student. Verify current requirements at IRS.gov.
- Medical care: Amounts paid directly to a medical provider for the medical care (as defined in IRC 213(d)) of any individual. Payments must go directly to the provider or insurance company; payments to the patient that are then used for medical expenses do not qualify. Verify current requirements at IRS.gov.
The direct-payment requirement under IRC 2503(e) is strict. A check made payable to a grandchild who then pays tuition does not qualify. The check must be payable to and paid directly to the educational institution or medical provider. Reimburse-then-exclude is not permitted. Verify payment documentation requirements at IRS.gov before advising clients on tuition and medical gift planning.
Marital Deduction and Charitable Deduction
Gifts to a US-citizen spouse qualify for an unlimited marital deduction under IRC 2523, reducing the taxable gift to zero regardless of amount. Gifts to a non-citizen spouse are subject to a limited annual exclusion in lieu of the unlimited marital deduction; verify the current indexed amount for gifts to non-citizen spouses at IRS.gov. Gifts to qualifying charitable organizations are deductible under IRC 2522, which provides an unlimited deduction for gifts to organizations meeting the statutory requirements. Verify current deduction rules at IRS.gov.
IRC 2502: Computation of Gift Tax
IRC 2502 imposes a tax on taxable gifts at the rates provided in IRC 2001(c). The computation uses a cumulative lifetime method that ensures prior taxable gifts affect the marginal rate applicable to current-year gifts. This is the core mechanical feature of the federal gift tax: it is not a flat rate on each year's gifts in isolation.
The Cumulative Lifetime Method
The gift tax for a calendar year is computed in three steps (verify at IRS.gov before applying):
- Compute the tentative tax on all lifetime taxable gifts. Add the taxable gifts for the current calendar year to all taxable gifts made in all prior calendar years (from 1977 forward). Apply the rate table from IRC 2001(c) to this cumulative total. This produces the tentative tax on the entire lifetime giving history.
- Compute the tentative tax on prior-year gifts only. Apply the same rate table to the total of all taxable gifts made in years before the current calendar year (excluding the current year's gifts). This isolates the tax that would have been due on prior giving.
- Subtract step 2 from step 1. The difference is the net gift tax on the current year's taxable gifts. Apply the unified credit under IRC 2505 against this net amount to determine any gift tax actually due.
The practical effect: if a donor has already made large taxable gifts in prior years, the current year's gifts are taxed at the highest marginal rate bracket reached by the cumulative total -- not at the lowest bracket as if prior gifts had never occurred. Verify the current rate table and bracket thresholds at IRS.gov.
Rate Table
The top marginal gift tax rate is 40% on taxable transfers above the applicable exclusion amount (IRC 2001(c)). Below that threshold, graduated rates apply to smaller taxable transfers. Verify the full rate table and all bracket amounts at IRS.gov; do not rely on any rate figures in this guide for a specific tax year without independent verification.
The cumulative method reaches back to January 1, 1977. A client who made substantial taxable gifts in the 1980s or 1990s -- even if no gift tax was paid at the time because the unified credit was applied -- may have those prior gifts included in the rate calculation today. Always reconstruct the complete gifting history before computing the current-year gift tax, and verify the applicable rules for pre-1977 gifts at IRS.gov.
Form 709: Filing Obligations and Gift-Splitting
Who Must File Form 709
A donor must file Form 709 (United States Gift (and Generation-Skipping Transfer) Tax Return) for a calendar year if any of the following apply (verify all conditions at IRS.gov):
- The donor made any taxable gifts during the year (that is, gifts exceeding the annual exclusion after applying the IRC 2503(b) and IRC 2503(e) exclusions).
- The donor made any gift of a future interest, regardless of amount.
- The donor and spouse are electing gift-splitting under IRC 2513 for the year.
- The donor made gifts subject to the generation-skipping transfer (GST) tax, even if no GST tax is due.
A donor who makes only present-interest gifts to any number of donees, each at or below the annual exclusion amount, is generally not required to file -- but this assumes no future-interest gifts and no gift-splitting election. Verify whether a filing obligation exists in any specific client situation at IRS.gov.
Due Date and Extensions
Form 709 is due on April 15 of the calendar year following the year in which the gifts were made. An extension of time to file the federal income tax return (Form 4868) automatically extends the Form 709 due date to October 15; no separate gift tax extension form is required for the filing extension. However, an extension to file does not extend the time to pay any gift tax due. Gift tax must be paid by the original April 15 due date to avoid interest and penalties. Verify current due dates, extension procedures, and payment requirements at IRS.gov.
Gift-Splitting: IRC 2513
IRC 2513 allows a married couple to elect to treat all gifts made by either spouse to third parties during the calendar year as made one-half by each spouse. This consent election effectively allows both spouses' annual exclusions and unified credits to apply to gifts funded entirely from one spouse's assets -- without requiring an actual transfer between spouses first.
Once a gift-splitting election under IRC 2513 is made on a timely filed Form 709 (including extensions), it is irrevocable for the entire calendar year. The election cannot be revoked after the due date of the return, including extensions. Consenting to split gifts means both spouses are treated as making one-half of every gift made by either spouse to third parties that year -- with both spouses potentially exposed to gift tax on the split amounts if the unified credit is exhausted. Verify all gift-splitting requirements and irrevocability rules at IRS.gov before advising clients to file.
Conditions for a valid gift-splitting election (verify all at IRS.gov):
- Both spouses must be US citizens or residents at the time of the gift.
- The spouses must be married to each other at the time of the gift.
- Neither spouse may remarry during the calendar year.
- The election must be signified by both spouses on Form 709 for the year in question.
- The election applies to all gifts made by either spouse to third parties during the year (subject to limited statutory exceptions).
IRC 2505: Unified Credit Against Gift Tax
IRC 2505(a) provides that a credit against the gift tax is allowed for each calendar year. The credit amount equals the applicable credit amount under IRC 2010(c) (the same provision that governs the estate tax applicable credit), reduced by the sum of all such credits allowable in preceding calendar years (after 1976). This reduction ensures that the unified credit functions as a single lifetime credit available against both gift tax and estate tax, not as a renewable annual credit.
Mechanics of the Unified Credit
The applicable credit amount is derived from the applicable exclusion amount under IRC 2010(c). The applicable exclusion amount represents the total value of transfers a person can make free of federal gift and estate tax, integrated across all years. When a donor uses a portion of the applicable exclusion amount to shelter a taxable gift, the same amount is unavailable to shelter the donor's estate at death. Conversely, to the extent the credit is not used during lifetime, the full remaining amount is available against the estate tax. Verify the current applicable credit amount and applicable exclusion amount at IRS.gov.
Lifetime Use Reduces the Death-Time Credit
The unified credit is a single pool. A donor who uses $3 million of the applicable exclusion amount during lifetime (sheltering $3 million of taxable gifts from gift tax) reduces the applicable exclusion amount available at death by exactly $3 million. The estate tax applicable credit at death is computed using the remaining exclusion only. This integration is the reason the gift tax and estate tax are called a "unified" system: the two taxes share one exemption pool. Verify the current computation rules for the credit remaining at death at IRS.gov.
For appreciated assets, gifting during life preserves the donor's low carryover basis in the donee's hands (IRC 1015), while retaining the asset until death allows a step-up to FMV (IRC 1014). Using the unified credit to shelter a gift of a highly appreciated asset may save transfer tax but cost more in capital gains tax than the transfer tax saved. The decision requires a side-by-side analysis of both taxes for each specific asset and client situation. Verify current basis rules at IRS.gov before advising.
OBBBA: Permanent $15 Million Exemption, Portability, and Clawback
The OBBBA Permanent Exemption
The One Big Beautiful Act (OBBBA), enacted in 2025, permanently raised the applicable exclusion amount to $15 million per person (indexed for inflation). The 2026 indexed amount is $15 million; verify the current indexed amount at IRS.gov and consult independent counsel, as these provisions are recently enacted and implementation guidance may be pending. Prior to the OBBBA, the TCJA had temporarily doubled the applicable exclusion amount above the pre-TCJA base and those elevated amounts were scheduled to sunset after 2025. The OBBBA's permanent structure removes the sunset risk for prospective gifts, but clients who made gifts in reliance on the TCJA-elevated exemption should still verify their specific situation with counsel.
Portability of the DSUE Amount: IRC 2010(c)(2)
Portability allows a surviving spouse to use the deceased spouse's unused exclusion (DSUE) amount in addition to the surviving spouse's own applicable exclusion. The portability election must be made on a timely filed estate tax return (Form 706) for the deceased spouse's estate, even if no estate tax is otherwise due. A late portability election may be available under IRS revenue procedures permitting simplified late elections; verify current procedures at IRS.gov. Once elected, the DSUE amount is available to the surviving spouse for both gift tax and estate tax purposes. Verify all portability requirements, DSUE computation rules, and any OBBBA-related changes at IRS.gov and consult independent counsel, as these provisions are recently enacted and implementation guidance may be pending.
If a donor makes taxable gifts sheltered by an applicable exclusion amount that is later reduced (whether by legislative change, sunset, or other reason), the estate tax computation at death may effectively subject those previously exempt gifts to estate tax -- a result practitioners call "clawback." Treasury finalized anti-clawback regulations under IRC 2010(g) for gifts made during the TCJA-elevated period (2018-2025). The OBBBA's permanent $15 million exemption substantially reduces (but does not eliminate) prospective clawback risk, because no sunset is currently scheduled. However, the interaction of the OBBBA rules, prior anti-clawback regulations, and possible future legislative change remains complex. Verify at IRS.gov and consult independent counsel, as these provisions are recently enacted and implementation guidance may be pending. Clients who made very large gifts during 2018-2025 under the TCJA-elevated exemption should review their exposure with qualified estate planning counsel before the estate is settled.
Basis Interaction: IRC 1015 (Gifts) and IRC 1014 (Death)
One of the most consequential planning trade-offs in gift vs. bequest decisions involves federal income tax basis. The gift tax and estate tax operate in the transfer tax world; IRC 1015 and IRC 1014 govern the donee's or heir's basis in the received property, with major implications for future capital gains tax.
IRC 1015: Carryover Basis on Gifts
When a donor transfers property by gift, the donee's basis for computing gain on a subsequent sale is the donor's adjusted basis in the property at the time of the gift -- commonly called the "carryover basis." If the donor's basis is $100,000 and the FMV at the date of the gift is $500,000, the donee's basis for gain purposes is $100,000. The donee sells at $600,000 and recognizes $500,000 of gain. The built-in appreciation at the time of the gift does not escape income tax; it is merely deferred until the donee sells. Verify current carryover basis rules, including any basis adjustment for gift tax paid, at IRS.gov.
For loss purposes, the rule differs: if the donee sells the gifted property at a loss, the basis for loss purposes is the lower of the donor's carryover basis or the FMV of the property on the date of the gift. This "loss basis" rule prevents a donor from transferring a built-in loss to a donee to generate a deductible loss that the donor could not have used directly. Verify current loss-basis rules at IRS.gov.
A partial basis adjustment is available when the donor paid gift tax at the time of the gift: the donee's basis is increased (but not above FMV) by a portion of the gift tax paid, computed as the ratio of the net appreciation to the total FMV of the gift. Verify the current gift-tax basis adjustment formula at IRS.gov.
IRC 1014: Step-Up in Basis at Death
Property included in a decedent's gross estate receives a basis equal to the property's FMV on the date of death (or, if elected, on the alternate valuation date under IRC 2032). This "stepped-up" basis eliminates any built-in gain that accumulated during the decedent's lifetime -- the gain disappears permanently from the income tax system. For appreciated property, this is a powerful income tax benefit that partially offsets the estate tax cost of retention.
For property that has declined in value below the decedent's basis, the step-up rule becomes a step-down: the heir's basis is reduced to FMV, and the built-in loss is permanently eliminated. This is a planning risk for decedents holding depreciated assets. Verify current step-down rules at IRS.gov.
Gift vs. Bequest: The Planning Trade-Off
For appreciated property, the practitioner should compare two outcomes for each client situation:
- Gift now: Donor uses unified credit to shelter the gift from gift tax. Donee takes carryover basis. The built-in gain survives and will be taxed when the donee eventually sells. If the property continues to appreciate, the future gain recognized by the donee is larger than the gain that would have been included in the estate. However, the appreciation after the gift date is removed from the donor's estate.
- Retain and bequest: The property remains in the donor's estate, potentially subject to estate tax. But the heir receives a stepped-up basis equal to FMV at death, eliminating the built-in gain from capital gains tax entirely. For heirs who intend to sell promptly after inheriting, the step-up may be more valuable than the estate tax savings from the gift.
The optimal strategy depends on the expected holding period after receipt, the capital gains rate applicable to the donee or heir, the estate tax rate applicable to the donor's estate, and the rate of appreciation projected for the asset. Verify all current rates and basis rules at IRS.gov before advising clients on specific planning decisions.
Illustrative Computation: $1 Million Taxable Gift in 2026
The following example is illustrative only. All figures are hypothetical and simplified for explanation. Verify all rate tables, exclusion amounts, and credit amounts at IRS.gov before applying these mechanics to any client situation.
Facts (hypothetical): In 2026, Donor D makes a $1,000,000 taxable gift (after subtracting the annual exclusion). D has used $500,000 of the applicable exclusion amount in prior years (meaning D has prior taxable gifts of approximately $500,000 that were sheltered by the unified credit but count in the cumulative calculation). D has not paid any out-of-pocket gift tax to date because the prior gifts were within the exclusion. Assume for illustration that the applicable exclusion amount is $15,000,000 and the applicable credit amount is the gift tax equivalent of sheltering $15,000,000.
| Step | Item | Illustrative Amount |
|---|---|---|
| 1 | Current-year taxable gifts (2026) | $1,000,000 |
| 2 | Add: all prior taxable gifts (cumulative, from 1977) | $500,000 |
| 3 | Total cumulative taxable gifts | $1,500,000 |
| 4 | Tentative tax on $1,500,000 (at applicable rate table) | [Rate-table dependent; verify at IRS.gov] |
| 5 | Tentative tax on $500,000 prior gifts only | [Rate-table dependent; verify at IRS.gov] |
| 6 | Net tentative gift tax (Step 4 minus Step 5) | [Computed per IRC 2502] |
| 7 | Applicable credit available (full credit less prior credit used) | Credit on $15,000,000 less credit used on $500,000 prior gifts |
| 8 | Gift tax due after unified credit (Step 6 minus Step 7, not below zero) | $0 (credit fully absorbs tentative tax in this illustration) |
| 9 | Remaining applicable exclusion after 2026 gift | $15,000,000 minus $1,500,000 = $13,500,000 (illustrative) |
| 10 | Form 709 required? | Yes -- taxable gifts made and exclusion used; verify at IRS.gov |
Note: At a $15,000,000 applicable exclusion amount, a $1,500,000 cumulative taxable gift total falls well within the exclusion, so no gift tax is due in this illustration. The illustration shows the mechanics. Actual tax depends on the rate table, the precise credit amount, and all facts. Verify at IRS.gov.
Gift Tax vs. Estate Tax: Comparison Table
The following table compares key parameters of the federal gift tax (Chapter 12) and the federal estate tax (Chapter 11) across 10 dimensions. Verify all figures, rules, and current requirements at IRS.gov.
| Parameter | Federal Gift Tax (IRC 2501-2524) | Federal Estate Tax (IRC 2001-2210) |
|---|---|---|
| Governing Code sections | IRC 2501-2524 (Chapter 12) | IRC 2001-2210 (Chapter 11) |
| Taxable event | Transfer of property by gift during the donor's lifetime (for less than full consideration) | Transfer of property at the decedent's death through the gross estate |
| Who bears the primary tax obligation | The donor (transferor) | The estate (executor on behalf of the estate) |
| Applicable exclusion amount (2026, OBBBA) | $15 million per person (indexed; verify at IRS.gov) | $15 million per person (indexed; unified with gift tax; verify at IRS.gov) |
| Annual per-donee exclusion | $19,000 per donee (2026 indexed; verify at IRS.gov); present-interest gifts only | No annual per-beneficiary exclusion; marital and charitable deductions available |
| Top marginal rate | 40% (verify current rate table at IRS.gov) | 40% (verify current rate table at IRS.gov) |
| Return filed | Form 709, due April 15 of following year (extendable); verify at IRS.gov | Form 706, due 9 months after date of death (extendable); verify at IRS.gov |
| Marital deduction | Unlimited for US-citizen spouse (IRC 2523); limited annual exclusion for non-citizen spouse | Unlimited for US-citizen surviving spouse (IRC 2056); QTIP and other rules apply |
| Income tax basis result for recipient | Carryover basis (donor's basis) for gain; lower of carryover basis or FMV for loss (IRC 1015) | Step-up (or step-down) to FMV on date of death or alternate valuation date (IRC 1014) |
| Portability of unused exclusion | No separate gift tax portability; DSUE from deceased spouse available to survivor for gifts if portability elected | Portability of DSUE available to surviving spouse; election required on Form 706 (IRC 2010(c)(2)) |