IRC 2036 and 2038 are the IRS's primary tools for challenging retained interest transfers. GRATs and IDGT sales can transfer significant wealth out of the taxable estate, but only if structured correctly and if the grantor survives the GRAT annuity term. With OBBBA's permanent increased exemption, confirm whether complex planning is necessary for each client's specific estate size before proceeding.
- IRC 2036(a)(1): decedent retained the right to income, use, possession, or enjoyment of transferred property -- date-of-death value is included in the gross estate, not the original transfer value.
- IRC 2036(a)(2): decedent retained the right (alone or in conjunction with any person) to designate who shall enjoy the property or income -- hedge specifics to the statute, Treasury regulations, and applicable case law.
- IRC 2038: retained power to alter, amend, revoke, or terminate the transfer at the date of death -- inclusion is at date-of-death value; a joint power with another person suffices.
- Bona fide sale exception (IRC 2036(a)): IRC 2036 inclusion does NOT apply to a transfer made for adequate and full consideration in money or money's worth in a genuine arm's length transaction.
- GRAT (grantor retained annuity trust): the retained annuity is a qualified interest under IRC 2702; the taxable gift is the FMV transferred minus the present value of the annuity at the IRC 7520 rate (hedge current rate to IRS.gov).
- Zero-out GRAT: the annuity is sized so the present value equals 100% of FMV; the taxable gift is approximately zero; valid under current law (Walton GRAT).
- GRAT mortality risk: if the grantor dies during the annuity term, IRC 2036(a)(1) includes GRAT assets in the estate; the included amount is generally the amount needed to fund the remaining annuity at the IRC 7520 rate at date of death.
- IDGT (intentionally defective grantor trust): grantor trust for income tax purposes under IRC 671-677 but outside the grantor's estate for estate tax purposes; the grantor pays income tax on trust income (an additional non-gift economic benefit to beneficiaries).
- Sale to IDGT: the grantor sells appreciated property to the IDGT for a promissory note at the AFR (IRC 1274); no capital gain because the IDGT is a grantor trust (same taxpayer); excess growth above the note interest passes to beneficiaries outside the estate.
- FLP and IRC 2036 risk: a decedent who retained practical control of a family limited partnership as general partner may trigger IRC 2036(a)(2) inclusion; fact-intensive; bona fide sale exception requires a genuine non-tax business purpose.
- OBBBA permanent exemption: the estate, gift, and GST exemption is permanently increased under OBBBA; confirm the exact 2026 amount at IRS.gov; clients with estates below the exemption may not need GRAT or IDGT complexity.
- All amounts and rates: verify at IRS.gov before use in client engagements; OBBBA is recently enacted and subject to ongoing regulatory interpretation.
IRC 2036 and IRC 2038 are the estate tax provisions that prevent a decedent from reducing the taxable estate through lifetime transfers while retaining the economic benefit or control of the transferred property. Together, they form the legislative foundation for the IRS's most common and most successful challenges to estate freeze planning: family limited partnerships, grantor retained annuity trusts, and trust structures in which the grantor kept more control than the plan intended. The rules are fact-intensive, the stakes are high (inclusion is at date-of-death value, not original transfer value), and the interaction with specialized planning tools such as GRATs and IDGTs requires careful drafting and ongoing administration.
This guide is written for enrolled agents, CPAs, and tax attorneys who advise clients on estate freeze strategies, lifetime transfer planning, and retained interest trust structures. It covers: the IRC 2036 and 2038 inclusion rules and the bona fide sale exception; GRAT structure, gift tax mechanics under IRC 2702, zero-out GRATs, and the mortality risk under IRC 2036; intentionally defective grantor trusts and the sale-to-IDGT technique; family limited partnership IRC 2036(a)(2) risks; and the impact of the OBBBA permanent exemption on the planning calculus. All dollar amounts, rates, and statutory references: verify at IRS.gov and in the current statute and regulations before use in client engagements. This guide is informational and does not constitute legal or tax advice.
Section 1: The Estate Inclusion Problem -- Retained Interests and IRC 2036/2038
The core issue: what you give away but keep
The federal estate tax applies to property included in the gross estate at the date of death. Congress recognized that a purely formalistic approach, one that respected every lifetime transfer regardless of what the decedent actually retained, would allow wealthy taxpayers to strip the gross estate of value while continuing to enjoy the transferred property until death. IRC 2036 and IRC 2038 are the legislative response: they pull back into the gross estate property that was nominally transferred during lifetime if the decedent retained the economic benefit or the power to control what happens to that property.
The inclusion consequence is severe: it is not the value of the property at the time of transfer that is included, but the date-of-death value. If a decedent transferred $1 million of stock to a family trust in 2010, retained the right to the income, and the stock grew to $10 million by the date of death in 2026, the entire $10 million is pulled back into the gross estate under IRC 2036(a)(1). The appreciation that the transfer was intended to shift out of the estate is entirely undone.
IRC 2036(a): retained income, possession, enjoyment, and the right to designate
IRC 2036(a) provides that the value of all property transferred by the decedent during lifetime is included in the gross estate if the decedent retained, for life or for any period that does not in fact end before death:
- IRC 2036(a)(1): the right to the income from the property, or the right to the use, possession, or enjoyment of the property. This covers a retained life estate, a retained right to occupy real property, a retained right to the investment income of a transferred brokerage account, and analogous arrangements. The right need not be expressly reserved in the governing document; an implied understanding or a course of conduct is sufficient under the applicable case law and regulations.
- IRC 2036(a)(2): the right, either alone or in conjunction with any other person, to designate the persons who shall possess or enjoy the property or the income from the property. What constitutes a "retained right to designate" under IRC 2036(a)(2) is defined by the statute, Treasury regulations, and a substantial body of case law; hedge all IRC 2036(a)(2) specifics to those authorities and the particular facts of each engagement.
The inclusion under IRC 2036(a) is of the date-of-death value of the transferred property (or the portion attributable to the retained interest). The original value at the time of transfer is not relevant to the inclusion calculation; all post-transfer appreciation is swept back into the estate along with the original transferred value.
IRC 2038: retained power to alter, amend, revoke, or terminate
IRC 2038 includes in the gross estate the value of property transferred during lifetime if, at the date of death, the decedent held (alone or in conjunction with any other person) the power to alter, amend, revoke, or terminate the transfer. The power can be formal, such as a reserved power to revoke the trust entirely, or substantive, such as a power to change the trust beneficiaries or to modify the time and manner of enjoyment of the trust property.
Critically, IRC 2038 applies even if the decedent cannot exercise the power entirely alone. A joint power, one that the decedent holds with any other person (including a co-trustee, a beneficiary, or a third party), is sufficient to trigger IRC 2038 inclusion. The inclusion is based on the date-of-death value of the property subject to the power. Hedge all IRC 2038 specifics to the statute and the applicable Treasury regulations; the interaction between IRC 2036 and IRC 2038 can result in overlapping inclusion (both sections potentially applying to the same property), but careful planning can avoid double inclusion by structuring the transaction to avoid both retention triggers.
The bona fide sale exception (IRC 2036(a))
IRC 2036(a) contains a critical exception: the retained interest inclusion does NOT apply to a bona fide sale of property for an adequate and full consideration in money or money's worth. This "bona fide sale exception" is the foundation for legitimate family limited partnership planning and for many other estate freeze strategies. If a decedent transferred assets in a genuine arm's length transaction for full and adequate consideration, there is no retained interest problem: the decedent received fair value for what was transferred and did not make a gift that retained economic benefit.
The bona fide sale exception is fact-intensive. Courts and the IRS scrutinize whether: (a) the transfer was truly an arm's length transaction with economic substance, (b) the consideration received was actually adequate and full, and (c) the transaction had a legitimate non-tax business purpose rather than being formed primarily to reduce estate taxes. The exception is available for genuine transactions; it does not apply to arrangements that are, in substance, disguised gifts with retained strings. All bona fide sale exception analysis should be hedged to the specific facts, applicable case law, and current IRS guidance.
IRC 2036 applies not only to expressly reserved rights but also to implied retained interests established by a course of conduct. A decedent who informally continued to live in transferred real estate, continued to receive and spend transferred investment income, or continued to manage and control transferred business assets may be found to have retained the right to possession or enjoyment under IRC 2036(a)(1) even without a written reservation. Document client compliance with the formal terms of any retained interest transfer from the date of transfer forward; informal arrangements will not survive IRS scrutiny.
Section 2: GRATs -- The Workhorse Retained Interest Planning Tool
GRAT structure and mechanics
A grantor retained annuity trust (GRAT) is a trust in which the grantor transfers property and retains a fixed annuity for a defined term (the "annuity period"). At the end of the annuity period, the remaining trust assets pass to the remainder beneficiaries -- typically the grantor's children or trusts for their benefit. The GRAT is a "retained interest" transfer by design: the grantor deliberately retains the annuity. The planning goal is for the trust assets to grow faster than the annuity payments, so that the excess growth passes to the remainder beneficiaries outside the grantor's estate without gift or estate tax cost.
The annuity payments made back to the grantor are a retained interest under IRC 2036(a)(1), but the GRAT is specifically designed to use this retained interest as a gift tax reduction tool rather than an estate inclusion trap. The key is that the retained annuity reduces the taxable gift on the transfer into the GRAT, and if the grantor survives the annuity term, the trust assets pass to beneficiaries without further estate tax exposure.
Gift tax mechanics: IRC 2702 and the IRC 7520 rate
Under IRC 2702, the retained annuity in a GRAT is a "qualified interest" -- specifically a qualified annuity interest under Treas. Reg. 25.2702-3 -- which means the present value of the retained annuity is subtracted from the fair market value of the transferred property to determine the taxable gift. Without this qualified interest treatment, the entire value transferred into a trust for the benefit of a family member would be a taxable gift.
The present value of the retained annuity is computed using the IRC 7520 rate. The IRC 7520 rate is 120% of the mid-term applicable federal rate, published monthly by the IRS. Verify the current month's IRC 7520 rate at IRS.gov; never rely on a prior month's rate for a current transaction. The IRC 7520 rate functions as the GRAT's "hurdle rate": the trust assets must grow faster than the IRC 7520 rate to produce a gift tax benefit. A higher IRC 7520 rate means the hurdle is higher; a lower IRC 7520 rate means the hurdle is lower and it is easier for the GRAT to produce a transfer of value to the remainder beneficiaries.
The gift calculation is: FMV of assets transferred minus the present value of the retained annuity (computed at the IRC 7520 rate for the annuity period) equals the taxable gift. Hedge all GRAT annuity payment structures, payment timing rules, and valuation mechanics to Treas. Reg. 25.2702-3 and the applicable regulations; these rules are detailed and the drafting requirements for a qualified annuity interest are specific.
Zero-out GRATs (Walton GRATs)
A zero-out GRAT (also called a "zeroed-out GRAT" or "Walton GRAT") is designed so that the present value of the retained annuity equals 100% of the fair market value of the assets transferred into the GRAT, making the taxable gift approximately zero. All growth above the IRC 7520 hurdle rate passes to the remainder beneficiaries at the end of the annuity term free of estate and gift tax. The zero-out GRAT is a valid planning technique under current law; the IRS's challenge in Walton v. Commissioner was resolved in favor of the taxpayer, confirming the validity of this approach.
The practical effect of a zero-out GRAT: the grantor transfers assets with high growth potential into the GRAT and retains an annuity that is sized to "zero out" the gift. If the transferred assets outperform the IRC 7520 hurdle rate (which the IRS publishes monthly at IRS.gov), the excess growth passes to the remainder beneficiaries at the end of the term without using any gift tax exemption and without incurring gift tax. If the assets underperform the hurdle rate or merely equal it, the remainder beneficiaries receive nothing from this particular GRAT -- but the grantor has not lost any gift tax exemption either (because the gift was zero or near zero). The downside risk is minimal and the upside is substantial for high-growth assets.
GRAT mortality risk: IRC 2036(a)(1) inclusion if the grantor dies during the term
The primary planning risk in a GRAT is the grantor's death during the annuity term. If the grantor dies during the GRAT annuity period, IRC 2036(a)(1) includes some or all of the GRAT assets in the grantor's gross estate. The inclusion is based on the amount needed to fund the remaining annuity payments using the IRC 7520 rate in effect at the date of death. The exact mechanics of the inclusion calculation are complex and fact-specific; hedge to IRC 2036 and the applicable case law and regulations for each engagement.
Practically: the GRAT does not "fail" in the sense that the grantor loses all value. The annuity value was never transferred as a taxable gift in the first place; the estate gets back the annuity value. However, the appreciation of the GRAT assets above the hurdle rate that was intended to escape estate taxation is pulled back into the estate along with the original transferred value. The estate tax benefit of the GRAT -- the transfer of excess growth outside the estate -- is eliminated for that GRAT if the grantor dies during the term.
GRAT churning: rolling short-term GRATs
GRAT churning is a strategy of using multiple successive short-term GRATs (for example, 2-year or 3-year terms) to transfer appreciation over time rather than relying on a single long-term GRAT. Each individual GRAT has a shorter mortality exposure period; if any one GRAT fails because the grantor dies during that term, only that GRAT's assets are pulled back into the estate. GRATs that completed their annuity terms before the grantor's death have already passed the remainder interest to the beneficiaries outside the estate.
When a GRAT annuity payment is received back by the grantor, that payment can be contributed to a new GRAT, effectively "re-upping" the strategy with the same assets (plus any additional assets). The GRAT churning strategy was widely used in the period leading up to the originally scheduled OBBBA exemption changes, but it remains a valuable strategy for ultra-high-net-worth clients regardless of the exemption level because it transfers appreciation above the IRC 7520 hurdle rate without gift tax cost. Hedge all GRAT churning mechanics, including the timing of new GRAT contributions and the treatment of annuity payments as new trust contributions, to the applicable regulations and current IRS guidance.
GST exemption cannot be allocated to a GRAT during the annuity term. Under the Estate Tax Inclusion Period (ETIP) rules, GST exemption may not be allocated to a transfer where any portion of the property transferred would be included in the transferor's gross estate if the transferor died immediately after the transfer. Because GRAT assets are includable in the estate if the grantor dies during the term (IRC 2036(a)(1)), the ETIP rules prevent GST exemption allocation until the GRAT annuity term ends. For clients who need GST-exempt remainder trusts funded from GRAT assets, plan the GST allocation timing carefully. For a full treatment of the ETIP rule and GST exemption allocation mechanics, see the GST tax IRC 2601-2642 inclusion ratio practitioner guide.
Section 3: IDGTs -- Separating Income Tax and Estate Tax
The IDGT concept: intentionally defective for income tax, clean for estate tax
An intentionally defective grantor trust (IDGT) is a trust structured to accomplish two seemingly opposite goals simultaneously: (a) for income tax purposes under IRC 671-677, the grantor is treated as the owner of the trust -- the grantor pays income tax on the trust's income even though the income is earned by and stays in the trust; and (b) for estate tax purposes, the trust assets are structured to be outside the grantor's gross estate -- the trust avoids IRC 2036 and IRC 2038 inclusion.
The "defect" is intentional and carefully designed. One or more powers are included in the trust document (under the grantor trust rules of IRC 671-677) that make the grantor the deemed income tax owner, but those powers are structured so that they do NOT constitute a retained income interest under IRC 2036(a)(1), a retained right to designate under IRC 2036(a)(2), or a power to alter/amend/revoke/terminate under IRC 2038.
Grantor trust triggers: examples of commonly used powers
The power most commonly used to make a trust a grantor trust for income tax purposes without triggering estate inclusion is the swap power under IRC 675(4)(C): the grantor reserves the right to substitute property of equivalent value for trust assets. Because the grantor must provide equivalent value in exchange for any swapped property, the swap power does not give the grantor the economic benefit of the trust assets (which would trigger IRC 2036(a)(1)) and is not considered a power to alter or amend for IRC 2038 purposes when properly structured.
Other examples of powers that may create grantor trust status for income tax purposes include: a reversionary interest worth more than 5% of the trust at inception (IRC 673); certain powers held by the grantor or a nonadverse party to add beneficiaries or change the beneficiaries' shares (certain IRC 677 powers); and a power of an independent trustee to sprinkle income among a class (which may not independently create grantor trust status but can be combined with other powers). Hedge all specific power choices and drafting details to the applicable IRC provisions, Treas. Reg. provisions, and the specific facts; the use of particular powers (swap power versus sprinkle power, and so on) requires careful drafting advice from qualified tax counsel.
The income tax benefit: grantor pays tax, beneficiaries keep the money
Because the grantor is treated as the income tax owner of the IDGT under IRC 671-677, the grantor pays income tax on all of the trust's income -- even though that income stays in the trust and benefits the trust beneficiaries. From a wealth transfer standpoint, the grantor's payment of the trust's income tax is the economic equivalent of an additional gift to the trust beneficiaries each year: the trust keeps the pre-tax income, and the grantor's estate is reduced by the income tax payment. This "tax burn" is not treated as a taxable gift under current law, making it an especially efficient wealth transfer mechanism.
The beneficiaries, when they receive trust distributions, receive income that has already been taxed at the grantor's level; they do not pay additional income tax on distributions that represent previously taxed income (to the extent of the grantor's tax payments). The combined effect is that the trust can grow on a pre-income-tax basis while the grantor's estate is simultaneously reduced by the income tax payments, all without using gift tax exemption.
Sale to IDGT: no capital gain, future growth passes to beneficiaries
The most commonly used IDGT planning technique is the "sale to an IDGT." The structure works as follows:
- Seed gift: the grantor first contributes a "seed" gift to the IDGT (typically 10-20% of the value of the property to be sold to the trust, funded with gift tax exemption or GST exemption). This establishes the trust as a legitimate entity with its own equity before the sale, which is important for the IRS's analysis of whether the trust is a real buyer.
- Sale for installment note: the grantor then sells additional appreciated property to the IDGT in exchange for a promissory note bearing interest at the applicable federal rate (AFR) under IRC 1274. Verify the current AFR at the current month's IRS.gov Revenue Ruling; the AFR changes monthly and is the minimum rate required to avoid imputed interest and gift tax consequences.
- No capital gain on the sale: because the IDGT is a grantor trust (same taxpayer as the grantor for income tax purposes), the sale is not a recognition event under current law; the grantor does not recognize capital gain on the transfer of appreciated property to the trust in exchange for the note.
- Trust repays the note: the IDGT pays interest and principal on the promissory note out of the trust's income and growth. The grantor receives these payments (which are not taxable, as they are treated as payments from the grantor to themselves for income tax purposes under the grantor trust rules).
- Excess growth passes to beneficiaries: if the trust's assets appreciate faster than the interest rate on the note, the excess growth belongs to the trust and ultimately passes to the remainder beneficiaries free of estate and gift tax. The grantor's estate contains only the value of the note (which is included in the gross estate), not the appreciated trust assets.
The IRS has indicated that it may challenge IDGT sales on the grounds that the transaction is not a true sale or that the promissory note should be treated as equity rather than debt. Hedge the estate tax treatment of IDGT sales to current IRS guidance and the applicable case law; this is an area where the IRS has expressed interest in issuing guidance, and the law is not fully settled. Do not advise on IDGT sale mechanics without reviewing the current state of IRS guidance and any proposed regulations.
| Feature | GRAT | IDGT Sale |
|---|---|---|
| Gift tax on transfer | Gift = FMV minus PV of annuity (zero-out GRAT: approximately zero) | Seed gift only (10-20% of asset value); sale for note is not a gift if structured at arm's length at AFR |
| Income tax treatment | Grantor trust; grantor pays income tax on GRAT income | Grantor trust; grantor pays income tax on all trust income; no capital gain on sale of appreciated property to trust |
| IRC 2036 mortality risk | Yes: IRC 2036(a)(1) includes GRAT assets if grantor dies during annuity term | Lower: properly structured IDGT avoids IRC 2036 inclusion; estate contains only the value of the note at death |
| Hurdle rate | IRC 7520 rate (120% of mid-term AFR; check IRS.gov monthly) | AFR on the promissory note (check current IRS.gov Revenue Ruling; generally lower than IRC 7520 rate) |
| Annuity or note payments | Annuity payments made to grantor for fixed term; annuity is the retained qualified interest | Note payments (interest and principal) made to grantor over note term; note is a debt obligation of the trust |
| GST planning during term | ETIP prevents GST exemption allocation during annuity term | GST exemption can be allocated to seed gift at inception; no ETIP restriction on the sale |
| Best asset type | Volatile, high-growth assets (stock options, closely held equity) that can outperform the IRC 7520 hurdle | Appreciated property with steady growth above the AFR; closely held business interests, real estate |
Section 4: Family Limited Partnerships and the IRC 2036(a)(2) Risk
FLPs as estate planning and succession tools
Family limited partnerships (FLPs) and family limited liability companies (FLLCs) are used to consolidate family investment assets, achieve valuation discounts for lack of marketability and lack of control on limited partnership interests, facilitate orderly succession of family wealth, and provide asset protection. The FLP owner (typically a senior family member) contributes assets to the FLP in exchange for general partner and limited partner interests. The limited partner interests are then transferred to younger family members, often at discounted values (reflecting the lack of control and marketability of a minority limited partnership interest), using gift tax exemption or outright gifts.
The valuation discount is the core economic benefit of FLP planning: a 25% to 40% discount on the limited partnership interests (depending on facts and appraisal) effectively reduces the gift tax value of the transferred interests, allowing more value to pass with less gift tax cost. Verify the applicable discount range with a qualified business appraiser; discount percentages are fact-specific and not guaranteed by the FLP structure alone.
IRC 2036(a)(2): retained control as general partner
The IRS has successfully argued IRC 2036(a)(2) inclusion in numerous FLP cases where the decedent transferred assets to the FLP but retained the practical ability to control distributions (as general partner) or to access the FLP assets informally. Under IRC 2036(a)(2), if the decedent retained the right (alone or in conjunction with any person) to designate who shall enjoy the property or income, the transferred property is included in the gross estate at its date-of-death value.
A general partner of an FLP typically has discretion over distributions to the limited partners. Courts have found that this discretion, combined with the decedent's substantial LP interest (or the ability to dissolve the FLP and recover the underlying assets), constitutes a retained right to designate who enjoys the FLP income under IRC 2036(a)(2). If the general partner is also the primary limited partner or if the FLP agreement effectively allows the general partner to access FLP assets for personal use, the IRC 2036 analysis is even more adverse.
Key cases including Strangi v. Commissioner (5th Circuit) and Turner v. Commissioner have held that IRC 2036 applies when the decedent retained the economic benefit of the transferred property or retained practical control. The FLP and IRC 2036 outcome is heavily fact-dependent; hedge all FLP analysis to the specific facts of the engagement and the current state of applicable case law and IRS guidance.
What the IRS examines in FLP cases
Practitioners advising on FLP structures should anticipate that the IRS will examine the following factors:
- Commingling of assets: did the decedent use FLP assets for personal expenses, or did the FLP pay the decedent's personal bills? Commingling is a strong indicator of retained economic benefit.
- Continued use of transferred property: did the decedent continue to live in real estate transferred to the FLP? Did the decedent continue to use closely held business assets as if the FLP transfer had never occurred?
- Funding with personal use assets: was the FLP funded primarily with assets that have no business use (such as a personal residence, a vacation home, or personal securities portfolios) rather than operating business assets?
- Formalities: did the FLP maintain separate bank accounts from the decedent's personal accounts? Were capital account balances maintained and reconciled? Were annual meetings held? Were FLP records kept separately from the decedent's personal records?
- Retention of sufficient assets for personal needs: did the decedent retain outside the FLP sufficient assets to live on without needing to access FLP assets? Deathbed transfers of virtually all personal assets to an FLP are a red flag for IRC 2036 purposes.
- Non-tax business purpose: was there a legitimate, documented non-tax business purpose for the FLP (investment management, asset protection, succession planning for an operating business) or was the FLP formed primarily to reduce the taxable estate?
Bona fide sale exception for FLPs
FLP transfers will escape IRC 2036 inclusion under the bona fide sale exception if: (a) the transfer to the FLP was made for adequate and full consideration (the decedent received FLP interests proportionate to the assets contributed); (b) the FLP had a legitimate, non-tax business purpose at the time of formation and that purpose was carried out in practice; and (c) the FLP was conducted with economic substance -- separate accounts, observed formalities, no commingling, distributions governed by the partnership agreement rather than the decedent's personal needs. The bona fide sale exception is available but requires careful planning and ongoing administration to maintain. All bona fide sale exception analysis is fact-specific; hedge to the applicable case law and current IRS guidance.
Section 5: OBBBA, Anti-Clawback, and the Current Planning Landscape
OBBBA permanent exemption: who still needs a GRAT or IDGT?
OBBBA permanently increased the estate, gift, and GST exemption. Confirm the exact 2026 indexed amount at IRS.gov and the current Form 709 instructions; the exemption adjusts annually for inflation under OBBBA and the specific current-year amount is the authoritative figure. OBBBA is recently enacted and subject to ongoing regulatory interpretation and IRS guidance.
For clients whose estates are well below the applicable exemption amount, the complexity and cost of establishing and administering GRATs or IDGTs may not be justified. An outright gift to children or to a simple irrevocable trust may accomplish the same wealth transfer goal at a fraction of the administrative cost, with no mortality risk, no annual GRAT churning, and no ongoing grantor trust income tax obligations. The OBBBA permanent exemption changes the planning calculus for a significant segment of the client population that previously needed retained interest planning.
For ultra-high-net-worth clients whose estates significantly exceed the exemption amount, GRATs and IDGT sales remain the most effective tools available for transferring future appreciation out of the taxable estate without gift tax cost. The fundamental value proposition of these techniques is unchanged for very large estates: the ability to transfer the growth of an asset above the IRC 7520 hurdle rate (for GRATs) or the AFR (for IDGT sales) to beneficiaries completely outside the estate, without using exemption and without paying gift tax.
For a companion resource on Form 706 estate tax return mechanics, portability of the deceased spousal unused exclusion, and Form 706 filing requirements under OBBBA, see the Form 706 estate tax return, portability, and DSUE practitioner guide.
Anti-clawback regulation (Treas. Reg. 20.2010-1(c))
During 2018 through 2025, the Tax Cuts and Jobs Act temporarily doubled the basic exclusion amount. Gifts made during this period using the higher TCJA exemption were subject to a potential "clawback" concern: if the exclusion later decreased (as it would have under the TCJA sunset), gifts that were made tax-free under the higher exclusion might have been subject to estate tax at death when the lower exclusion applied. Treas. Reg. 20.2010-1(c) addressed this concern by providing that gifts made during the higher-exclusion period would not be clawed back into the estate if the exclusion later decreased.
Because OBBBA made the higher exclusion permanent, the clawback risk is substantially reduced for most clients. However, Treas. Reg. 20.2010-1(c) remains in effect and provides protection for completed gifts made during 2018-2025 if OBBBA is later modified by Congress. Hedge to the current enacted state of OBBBA and IRS.gov for any client-specific advice on anti-clawback planning.
Estate freeze strategies in the current environment
GRATs and IDGT sales are "estate freeze" strategies: they fix the value of assets in the grantor's estate at the annuity value (for GRATs) or the promissory note value (for IDGT sales), while all future growth passes to the beneficiaries outside the estate. The effectiveness of these strategies is sensitive to the interest rate environment:
- GRATs and the IRC 7520 rate: when the IRC 7520 rate is lower, the GRAT annuity has a higher present value relative to the asset's FMV, which means a smaller annuity is needed to zero out the gift -- but the trust assets still need to outperform the IRC 7520 hurdle rate to benefit the remainder beneficiaries. At higher IRC 7520 rates, the hurdle is harder to clear; the GRAT requires stronger asset performance. Verify the current monthly IRC 7520 rate at IRS.gov before structuring any GRAT.
- IDGT sales and the AFR: the IDGT sale technique uses a promissory note bearing interest at the AFR (IRC 1274), which is generally lower than the IRC 7520 rate. IDGT sales may therefore be more attractive than GRATs when the IRC 7520 rate is high and the AFR is significantly lower, because the trust needs to outperform only the AFR (not the higher IRC 7520 rate). Verify the current AFR at IRS.gov for the month of the sale; the AFR changes monthly.
The OBBBA permanent exemption eliminates the urgency of using the full exemption before a potential sunset date (which drove intensive GRAT churning in late 2025 under prior law), but for clients with estates well above the exemption, the fundamental case for GRAT churning and IDGT sales is unchanged: these strategies transfer future appreciation at no gift tax cost and no exemption usage, which is valuable regardless of the exemption level.
Frequently Asked Questions
What is the IRC 2036 estate inclusion trap?
IRC 2036(a) includes in the gross estate property transferred during lifetime if the decedent retained the right to income, use, possession, or enjoyment of the property (IRC 2036(a)(1)) or retained the right to designate who enjoys the property or its income (IRC 2036(a)(2)). The inclusion is at the date-of-death value, not the original transfer value -- so a gift of property that appreciated dramatically is fully included at current value if the decedent retained a right covered by IRC 2036. The bona fide sale exception under IRC 2036(a) excludes transfers made for adequate and full consideration in a genuine arm's length transaction. All IRC 2036(a)(2) specifics and what constitutes a retained right to designate should be verified against the statute, Treasury regulations, and applicable case law.
What is a GRAT and how does it reduce estate taxes?
A GRAT (grantor retained annuity trust) is a trust in which the grantor transfers property and retains a fixed annuity for a set term; the taxable gift is the fair market value transferred minus the present value of the annuity computed at the IRC 7520 rate (IRC 2702; Treas. Reg. 25.2702-3). A zero-out GRAT sets the annuity so the gift is approximately zero. If the trust assets grow faster than the IRC 7520 hurdle rate, the excess growth passes to beneficiaries estate- and gift-tax free at term end. The primary risk: if the grantor dies during the annuity term, the GRAT assets are included in the gross estate under IRC 2036(a)(1). Verify the current IRC 7520 rate at IRS.gov; it changes monthly.
What happens to a GRAT if the grantor dies during the annuity term?
If the grantor dies during the GRAT annuity term, IRC 2036(a)(1) includes some or all of the GRAT assets in the gross estate. The included amount is generally the portion needed to fund the remaining annuity payments at the IRC 7520 rate as of the date of death. The GRAT does not fail entirely; the annuity value was never a taxable gift, so the estate is not worse off in that respect. However, the estate inclusion can eliminate the estate tax benefit of the GRAT for the assets that are included. The exact mechanics of the inclusion calculation are complex and fact-specific; hedge to IRC 2036 and the applicable case law and regulations. Rolling short-term GRATs (for example, 2-year terms) reduce the mortality exposure per individual GRAT but require the grantor to survive multiple annuity terms.
What is an IDGT and how does it differ from a GRAT?
An IDGT (intentionally defective grantor trust) is a trust that is a grantor trust for income tax purposes under IRC 671-677 but is designed to be outside the grantor's gross estate for estate tax purposes. Unlike a GRAT, there is no annuity: the grantor typically sells appreciated property to the IDGT in exchange for an installment note at the applicable federal rate (AFR; IRC 1274). The sale does not trigger capital gain because the IDGT is a grantor trust (the grantor and the trust are the same taxpayer for income tax). The grantor pays income tax on trust income, which is an additional economic benefit to beneficiaries without gift tax cost. All appreciation above the note interest rate passes to the beneficiaries outside the estate. A key difference from the GRAT: a properly structured IDGT avoids IRC 2036 and IRC 2038 inclusion during the grantor's lifetime, so there is no mortality risk comparable to the GRAT annuity term risk.
What is a sale to an IDGT and what are the tax benefits?
A sale to an IDGT involves the grantor selling appreciated property (often closely held business interests or real estate) to the IDGT in exchange for a promissory note bearing interest at the applicable federal rate (AFR; IRC 1274). Because the IDGT is a grantor trust (same taxpayer as the grantor for income tax purposes), the sale is not a recognition event; no capital gain is triggered on the transfer of appreciated property. The trust grows, and if the trust assets appreciate faster than the note interest rate, the excess passes to the beneficiaries free of gift and estate tax. Verify the current AFR at IRS.gov for the current month's Revenue Ruling; the rate changes monthly and is the minimum rate required to avoid imputed interest and gift tax issues. The IRS has indicated it may challenge IDGT sale transactions; hedge the estate tax treatment to current IRS guidance and the applicable case law.
How does IRC 2036 apply to family limited partnerships (FLPs)?
When a decedent transferred assets to a family limited partnership (FLP) but retained practical control (as general partner or through a sufficiently large or dominant general partner interest), the IRS has successfully argued that IRC 2036(a)(2) includes the FLP assets in the estate. Courts have sustained IRC 2036 challenges when the decedent did not observe FLP formalities, commingled personal and FLP assets, or used the FLP primarily for estate tax reduction without a genuine non-tax business purpose (see Strangi v. Commissioner, Turner v. Commissioner, and related cases). The bona fide sale exception under IRC 2036(a) protects FLPs funded for legitimate purposes (investment management, asset protection, business succession) in exchange for full and adequate consideration. The FLP and IRC 2036 outcome is heavily fact-dependent; hedge to the specific facts of the engagement and the current state of case law.
How does the OBBBA permanent exemption change GRAT and IDGT planning?
OBBBA permanently increased the estate, gift, and GST exemption (confirm the exact 2026 amount at IRS.gov; it adjusts annually for inflation). For clients with estates below the exemption, outright gifts may be simpler and more efficient than GRATs or IDGTs. For ultra-high-net-worth clients with estates significantly above the exemption, GRATs and IDGT sales remain the most effective tools for transferring future appreciation out of the estate at no gift tax cost. The permanent exemption eliminates the sunset urgency that drove aggressive GRAT churning in 2025, but the fundamental value of these techniques is unchanged for very large estates: the ability to transfer growth above the IRC 7520 hurdle rate or the AFR to beneficiaries without exemption usage or gift tax is independent of the exemption amount. Verify current exemption amounts and OBBBA details at IRS.gov before advising clients; OBBBA is recently enacted and subject to ongoing regulatory interpretation.
Related Practitioner Guides
The following guides address planning tools and filings that directly intersect with IRC 2036 and 2038 retained interest planning.
- IRC 1014 and IRC 1015: Basis in Inherited and Gifted Property -- Stepped-up basis at death, carryover basis for gifts, Rev. Rul. 2023-2 grantor trust warning, IRC 1014(f) consistency rules, and OBBBA planning context.
- Form 706 estate tax return, portability, and DSUE practitioner guide -- the Form 706 is where Schedule G captures retained interest transfers (IRC 2035-2038) and where the estate tax cost of an IRC 2036 inclusion is ultimately computed; this companion guide covers Form 706 filing requirements, the portability election, Rev. Proc. 2022-32, and the OBBBA permanent exclusion amount.
- GST generation-skipping transfer tax IRC 2601-2642 inclusion ratio practitioner guide -- GRAT and IDGT planning intersects directly with GST planning: the ETIP rules prevent GST exemption allocation during the GRAT annuity term, and IDGTs are frequently used as dynasty trusts funded with GST exemption; this guide covers the inclusion ratio, the applicable fraction, taxable terminations, and the ETIP trap.
- IRC 2032A special use valuation for farm and closely held real estate practitioner guide -- for closely held real estate and farm assets that are frequently transferred to FLPs or retained in the gross estate under IRC 2036, the IRC 2032A special use valuation election provides an alternative basis for valuing qualifying property at its actual use value (farm or business) rather than its highest and best use value; this guide covers the election requirements, qualifying property rules, and the recapture tax.
- IRC 7520 GRAT, CLAT, and QPRT Planning Guide -- the companion rate-sensitive techniques guide covers zeroed-out GRATs (Walton; Rev. Rul. 2004-64), charitable lead annuity trusts, and qualified personal residence trusts, all of which turn on the monthly IRC 7520 rate and carry the same IRC 2036(a)(1) estate inclusion risk analyzed here.
- IRC 2010 Permanent Estate and Gift Tax Exemption Guide -- IRC 2036/2038 estate inclusion analysis is conducted against the backdrop of the available BEA.
- IRC 664 Charitable Remainder Trust Guide -- estate inclusion rules under IRC 2036/2038 for retained interests affect CRT structures where the donor retains an annuity or unitrust interest; both guides are needed for complete retained interest analysis. This companion guide covers CRAT and CRUT structure, the income tier waterfall, the IRC 170 remainder deduction, and IRC 664(c) UBTI rules.
- IRC 6166 Estate Tax Installment: Closely Held Business Election -- Installment payment of estate tax for qualifying closely held business interests in estates where IRC 2036 or 2038 inclusion affects the gross estate and adjusted gross estate computation.
- IRC 2518: Qualified Disclaimers -- when a GRAT or IDGT beneficiary disclaimed an interest in the trust before acceptance, the IRC 2518 mechanics determine whether the disclaimer redirects the trust assets without triggering the IRC 2036 or 2038 retained interest rules; practitioners designing retained-interest trusts must plan for the possibility of beneficiary disclaimers and understand how a qualified disclaimer interacts with the trust's inclusion-ratio and GST exposure.
- IRC 2053: Estate Deductions -- when a GRAT or IDGT is included in the gross estate under IRC 2036 or 2038, the administration expenses for managing and liquidating those trust assets may qualify as deductible administration expenses under IRC 2053; executor fees for winding up a retained-interest trust structure can be substantial, and the Reg. 20.2053-3(b) rules for deductible executor compensation apply to those additional administrative duties.
- IRC 2035: Gifts Within 3 Years of Death -- IRC 2035(a) is the clawback mechanism for transfers subject to IRC 2036, 2037, or 2038: if the decedent transferred an interest in a GRAT, family limited partnership, or other retained-interest vehicle within 3 years of death, the transferred interest is pulled back into the gross estate at its date-of-death value, eliminating the planning benefit of the transfer.
- IRC 2056: Marital Deduction and QTIP Election -- IRC 2036(a)(1) pulls retained-interest transfers back into the gross estate; the QTIP trust avoids this trap by requiring mandatory income to the surviving spouse without giving the grantor a retained interest -- the QTIP terminable interest is the exception to the terminable interest rule; practitioners who use GRATs, IDGTs, and retained-interest strategies must also understand the marital deduction to plan around the IRC 2036(a)(1) risk at the level of the second death.
- IRC 2501-2505: Federal Gift Tax Imposition, Rate Schedule, and Unified Credit Practitioner Guide -- transfers to a GRAT and an IDGT both constitute taxable gifts to the extent the transferred value exceeds the IRC 7520 actuarial value of the retained annuity interest or the value of any note received in a sale transaction; a GRAT initially has no gift tax cost if structured as a zeroed-out GRAT (present value of annuity equals transferred value), but any appreciation above the IRC 7520 hurdle rate passes to remainder beneficiaries gift-tax-free; the IRC 2501-2505 gift tax framework governs the initial transfer to the trust, and practitioners advising on GRAT and IDGT structures must compute the IRC 2502 taxable gift amount and confirm that the donor's IRC 2505 unified credit is sufficient to cover any gift that does arise without triggering out-of-pocket gift tax (verify at IRS.gov).
- IRC 671-679: Grantor Trust Rules, IDGT, SLAT, and Income Inclusion -- practitioner guide to grantor trust deemed-owner attribution under IRC 671, intentionally defective grantor trust (IDGT) triggering powers under IRC 675, SLAT spousal attribution under IRC 677, beneficiary ownership under IRC 678, and the IRC 679 foreign grantor trust deemed-owner rule.
- IRC 2702: Special Valuation Rules for GRATs, GRUTs, and QPRTs -- practitioner guide to the IRC 2702(a) zero-value rule for retained interests, qualified annuity and unitrust interests under IRC 2702(b), GRAT mechanics, zeroed-out and rolling GRAT structures, and QPRT valuation -- the primary valuation statute governing all GRAT and QPRT transfers where the grantor retains an interest.
- IRC 2042: Life Insurance Gross Estate Inclusion, ILIT Planning, and Incidents of Ownership -- under IRC 2042(2), life insurance proceeds are included in the gross estate when the decedent holds any incident of ownership in the policy at death; the ILIT eliminates IRC 2042 estate inclusion by transferring ownership to an irrevocable trust, but the IRC 2036 retained interest analysis must confirm the donor did not retain prohibited control over the ILIT.
- IRC 704(e): Family Partnership Income Allocation and Bona Fide Capital Interest -- family limited partnerships (FLPs) used as estate freeze vehicles are subject to IRC 704(e) income allocation scrutiny and IRC 2036(a)(2) retained-control estate inclusion; when the donor retains control over the FLP as general partner without adequate limited partner rights, the IRS can include FLP assets in the estate under IRC 2036(a)(2) while also challenging the donor's income allocation to donee partners under IRC 704(e)(2) if allocations exceed the donee partner's pro-rata capital contribution.
- IRC 2044: QTIP Trust Gross Estate Inclusion and Basis Step-Up at the Surviving Spouse's Death -- IRC 2044 mandates estate inclusion of all QTIP property in the surviving spouse's gross estate; the QTIP estate tax footprint and its interaction with IRC 2036 retained-interest analysis and the OBBBA permanent $15M exemption are core planning mechanics for married clients using GRATs and IDGTs alongside a QTIP trust.
Regulated Claims and Verification Requirements
Verify all of the following before relying on them in client engagements. (1) IRC 2036(a)(1) and (a)(2) inclusion: confirmed under IRC 2036; inclusion is at date-of-death value; "retained right to designate" specifics hedge to the statute, Treasury regulations, and applicable case law. (2) IRC 2038 inclusion: confirmed under IRC 2038; joint power with any other person suffices; hedge specifics to statute and regulations. (3) Bona fide sale exception: confirmed under IRC 2036(a); requires adequate and full consideration in money or money's worth in a genuine transaction; fact-intensive. (4) GRAT qualified interest: confirmed under IRC 2702 and Treas. Reg. 25.2702-3; annuity payment structures and timing hedge to applicable regulations. (5) Zero-out GRAT validity: valid under current law following Walton v. Commissioner; subject to change by future legislation or guidance. (6) GRAT mortality risk inclusion: IRC 2036(a)(1); inclusion amount is fact-specific; hedge to applicable case law and regulations. (7) IRC 7520 rate: published monthly by IRS; verify current rate at IRS.gov before any GRAT transaction; never state a specific current rate in client advice without confirming the current month's published rate. (8) IDGT grantor trust rules: IRC 671-677; specific powers (swap power under IRC 675(4)(C) and others) hedge to applicable code provisions and IRS guidance; use of specific powers requires careful drafting advice. (9) IDGT sale and no capital gain: current law treats the grantor trust as the same taxpayer as the grantor; IRS has indicated possible challenges; hedge to current IRS guidance and applicable law. (10) AFR on IDGT promissory note: IRC 1274; verify current AFR at IRS.gov Revenue Ruling for the current month. (11) FLP and IRC 2036(a)(2): Strangi v. Commissioner, Turner v. Commissioner, and other cases; outcome is heavily fact-dependent; hedge to specific facts and current case law. (12) OBBBA permanent exemption: confirm exact 2026 indexed amount at IRS.gov; OBBBA is recently enacted and subject to ongoing regulatory interpretation. (13) Anti-clawback regulation: Treas. Reg. 20.2010-1(c); hedge to current enacted OBBBA and IRS.gov. This guide is informational and does not constitute legal or tax advice. Consult qualified estate planning counsel for client-specific guidance.