How a Reversionary Trust Works: Income, Gift, and Estate Tax Rules

A reversionary trust is an arrangement where you transfer assets into a trust for a fixed period, someone else receives the income during that period, and the assets automatically come back to you when the term ends. Under current law, the IRS usually treats you as the owner for income tax purposes and taxes the trust’s income on your personal return, transfers to family members are treated as full taxable gifts of the property despite the reversion, and the assets can be pulled back into your estate if you die before the term expires.¹ The combined effect is that most of the tax benefits people associate with these trusts no longer exist.

How the Structure Works

The mechanics are simple. You transfer assets into a trust and name someone else as the income beneficiary for a defined period. A trustee manages the assets. When the term ends, the principal reverts to you or your estate rather than passing permanently to the beneficiary. That automatic return of principal is the “reversion” that gives the trust its name.

The original appeal was income shifting. A high earner could park income-producing assets in a trust for a lower-bracket family member, let the beneficiary pay tax on the income at their rate, and then get the assets back. Nothing was permanently given away, and the family paid less tax in the meantime. The Tax Reform Act of 1986 rewrote the rules so this rarely works anymore.¹

Income Tax: The 5% Rule

Under Section 673, you are treated as the owner of the trust and taxed on all of its income if the value of your reversionary interest exceeds 5% of the trust’s value at the time you set it up.¹ “Value” doesn’t mean the face amount of the property. It means the present value of your right to receive the property in the future, calculated using the IRS’s monthly Section 7520 interest rate.

The Section 7520 rate is 120% of the federal midterm rate, rounded to the nearest two-tenths of a percent.² For January 2026, that rate is 4.6%.³ Two variables drive the calculation: the length of the trust term and the prevailing interest rate. A shorter term or a higher rate makes the reversion more valuable now, which pushes you over 5%. A longer term or a lower rate pushes the value down.

The practical result is that the term usually has to be very long to get the reversion value below 5%. At a 4.6% Section 7520 rate, the term needs to be roughly 65 years or more before the reversion’s present value drops under 5% of the trust. That makes income shifting through this structure unrealistic for most people, which is what Congress intended.

If the reversion exceeds 5%, you report all of the trust’s ordinary income, capital gains, and deductions on your personal tax return as if the trust didn’t exist. It is invisible for income tax purposes.

Exception for a Minor Descendant

Section 673(b) carves out one narrow exception. If the beneficiary is your lineal descendant (a child, grandchild, or further descendant), holds all present interests in the trust, and the reversion takes effect only if that beneficiary dies before reaching age 21, you are not treated as the owner solely because of the reversionary interest.¹ It applies only to a contingent reversion triggered by a young descendant’s early death. It doesn’t help if you simply want the property back after a set number of years.

Other Grantor Trust Rules Can Still Trigger

Even if a reversionary interest clears the 5% hurdle, the trust can still be taxed to you under other grantor trust provisions. Sections 674 through 677 catch additional powers and interests:

Power over beneficial enjoyment (Section 674): if you or a friendly party can redirect who benefits from trust income or principal, you’re treated as the owner.
Administrative powers (Section 675): certain management powers, such as the ability to buy trust assets, borrow without adequate security, or control investments, trigger grantor trust status.
Power to revoke (Section 676): if you or a non-adverse party can take back the trust property, you’re treated as the owner.⁴
Income benefiting the grantor (Section 677): if income can be distributed to you, accumulated for you, or used to pay your life insurance premiums, you owe tax on it.

A reversionary trust concentrates control in the grantor by design, so it’s easy to stumble into one of these triggers even when the reversion itself is valued below 5%.

Gift Tax: The Section 2702 Trap

Transferring property into a reversionary trust creates a taxable gift, but the size of that gift depends on who the beneficiary is. For transfers to family members, Section 2702 applies a harsh valuation rule: any retained interest that is not a “qualified interest” is valued at zero for gift tax purposes.⁵

A reversion, the bare right to get property back at the end of a term, is not a qualified interest. Qualified interests are limited to fixed annuity payments, fixed-percentage unitrust payments, and noncontingent remainders following those payment streams.⁵ A simple reversion fits none of those categories.

The consequence is severe. Because the retained reversion is valued at zero, the IRS treats the full value of the transferred property as a taxable gift. Treasury regulations give a direct example: a grantor who transfers property to a trust and retains a 10-year income interest plus a reversion has both interests valued at zero because neither qualifies, and the taxable gift equals the entire fair market value of the property.⁶ You owe gift tax, or use up lifetime exemption, on assets you fully intend to get back.

For 2026, the federal gift and estate tax exemption is $15,000,000 per person.⁷ Most people won’t actually write a check for gift tax. But they will burn through exemption on a transfer that isn’t permanent, which defeats much of the point of estate planning.

Section 2702 only applies to transfers among family members. A reversionary trust set up for an unrelated beneficiary would be valued using standard Section 7520 actuarial tables. In practice, almost all of these trusts involve family, so the Section 2702 result is the default.

Estate Tax: Inclusion Under Section 2037

If you die before the trust term expires, the assets may be pulled back into your taxable estate under Section 2037. Two conditions must both be met:

Survivorship requirement: the beneficiary can only receive the property by outliving you.
5% reversionary interest: the value of your reversion, measured immediately before death using actuarial tables, exceeds 5% of the property’s value.⁸

The 5% threshold here is tested at a different moment than the income tax test. Section 673 measures value at the trust’s inception. Section 2037 measures it immediately before death, using your life expectancy at that point.⁸ A trust that passed the income tax test at creation can still fail the estate tax test if you die before the term runs out, because the remaining time until reversion has shrunk and the reversion is worth more.

When inclusion applies, the full date-of-death value of the trust assets is added to your gross estate. With the 2026 exemption at $15 million per person, many estates won’t owe tax even with inclusion.⁷ For larger estates, the 40% federal estate tax rate makes this a serious risk.

Basis Step-Up as a Partial Offset

There is one advantage to estate inclusion. Property included in the gross estate under Section 2037 qualifies for a stepped-up cost basis equal to fair market value at the date of death.⁹ For a trust holding assets with large unrealized gains, the capital gains tax savings from the new basis can partly or fully offset the estate tax cost.

What Happens If Income Shifting Actually Works

In the rare case where a reversionary trust escapes grantor trust treatment (the reversion is under 5% and no other grantor trust rule applies), the income is taxed either to the trust itself or to the beneficiary when distributed. This is where the math gets unpleasant. Trust and estate income tax brackets are dramatically compressed compared to individual brackets. For 2026:

10% on the first $3,300 of taxable income
24% from $3,301 to $11,700
35% from $11,701 to $16,000
37% over $16,000⁷

A trust hits the top 37% rate at just $16,000 of taxable income. A single individual doesn’t reach that rate until over $626,000. Trust income that stays in the trust is taxed at the highest rate almost immediately. The income-shifting benefit only materializes if the trust distributes income to a beneficiary in a genuinely lower bracket, and even then, kiddie tax rules can tax a minor beneficiary’s unearned income at the parent’s rate.

Why This Structure Rarely Pays Off Today

The tax rules work against each other. To escape grantor trust treatment for income tax purposes, you need a very long trust term, which means losing access to your assets for decades. Section 2702 treats your retained reversion as worthless for gift tax purposes when the beneficiary is family, so you use up lifetime exemption on property you haven’t permanently given away. If you die during the term, the assets can land back in your taxable estate under Section 2037. And if you clear every hurdle, the compressed trust brackets tax undistributed income at 37% almost from the first dollar.

Irrevocable trusts that permanently move assets out of your estate generally achieve the same objectives with fewer traps. If you’re weighing any trust structure that shifts income or removes assets from your estate, the interaction between income tax, gift tax, and estate tax rules is where the real planning lives, and professional guidance before execution is the difference between a strategy and an expensive mistake.

1
Office of the Law Revision Counsel. 26 USC 673 – Reversionary Interests
2
Internal Revenue Service. Section 7520 Interest Rates
3
Internal Revenue Service. Rev Rul 2026-2
4
Office of the Law Revision Counsel. 26 USC 676 – Power to Revoke
5
Office of the Law Revision Counsel. 26 US Code 2702 – Special Valuation Rules in Case of Transfers of Interests in Trusts
6
eCFR. 26 CFR 25.2702-2 – Definitions and Valuation Rules
7
Internal Revenue Service. Rev Proc 2025-32
8
Office of the Law Revision Counsel. 26 US Code 2037 – Transfers Taking Effect at Death
9
Office of the Law Revision Counsel. 26 US Code 1014 – Basis of Property Acquired From a Decedent