Updated July 28, 2026. Quick answer: A power to reacquire trust corpus by substituting property of equivalent value, held in a nonfiduciary capacity, creates grantor-trust status under IRC §675(4)(C). It is the most commonly used deliberate trigger — and under Rev. Rul. 2008-22 it does not by itself pull the trust into the grantor’s estate, provided specific conditions are met.
Why a switch that does nothing economically is so useful
The power to swap assets of equal value changes nothing about who benefits from the trust. But it makes the grantor the taxpayer — so the grantor pays the trust’s income tax out of their own pocket, the trust compounds without that drag, and the payment is not treated as an additional gift. Over a long horizon that is a substantial transfer accomplished by a provision that moves nothing.
The two words doing the work are “equivalent value” and “nonfiduciary.” The statutory language is specific about both, and a power drafted loosely may not produce the intended result — or may produce results nobody wanted. This is drafting, not a checkbox.
The estate-inclusion question
The obvious worry is that retaining a power over trust assets drags them back into the taxable estate. Rev. Rul. 2008-22 addresses exactly this and concludes that a nonfiduciary substitution power does not by itself cause inclusion under §2036 or §2038 — but only where the stated conditions hold, which include the trustee having a duty to ensure the substituted property really is of equivalent value.
There is a related question about substitution powers and life insurance under §2042 addressed in a separate ruling. I could not verify that ruling from primary source and am therefore not citing it. If the trust holds life insurance, treat that as an open question for your adviser rather than assuming the same answer applies.
No dollar amounts appear on this page. The trust rate brackets are adjusted annually, and the trust threshold for the net investment income tax is not a fixed figure at all — IRC §1411(a)(2)(B)(ii) ties it to the start of the top trust bracket, so it moves every year. Take current figures from the IRS revenue procedure for the year in question.
Sources
IRC §1(e) and §1(j) (as made permanent by P.L. 119-21); §641; §643(a); §644; §651 and §661 (distribution deduction); §663(b) and Treas. Reg. §1.663(b)-2; §671 and §673–677 (grantor trust rules); §675(4)(C) (substitution power); §1411(a)(2) and (b) (net investment income tax); Rev. Rul. 2008-22. North Carolina Dept. of Revenue v. Kaestner Family Trust, 588 U.S. 262 (2019). All read July 2026.
This states what the cited authority says. It is not tax advice, and retirement-plan design turns on facts about your business and your other entities that no page can see. Every dollar limit referenced here is indexed and changes annually.