Updated July 28, 2026. Quick answer: A private letter ruling protects only the taxpayer who requested it and may not be cited as precedent by anyone else. When a promoted structure is described as “IRS-approved” on the strength of letter rulings issued to other people, that description is doing work the rulings cannot support.
What a PLR is and is not
| A private letter ruling | |
|---|---|
| Binds the IRS as to the requesting taxpayer | Yes |
| Binds the IRS as to anyone else | No |
| May be cited as precedent | No |
| Means the IRS agrees with the structure generally | No |
Where this matters right now: incomplete-gift non-grantor trusts. The IRS has issued no published guidance on them and has declined to rule in some circumstances. Any confidence about their treatment rests on rulings issued to other taxpayers on their own facts — which is a much weaker foundation than the marketing usually conveys.
The structure the IRS has publicly warned about
The IRS Office of Chief Counsel has publicly addressed a marketed arrangement promoted as a “non-grantor, irrevocable, complex, discretionary, spendthrift trust” and promising that income placed in it escapes tax. If you have been pitched something in that shape, it is not an aggressive-but-defensible position — it is one the IRS has specifically called out.
How to read a promoter’s citations
Ask what is being cited. A statute, a regulation, a revenue ruling and a published court decision are authority. A private letter ruling issued to someone else, and an opinion letter from the promoter’s own counsel, are not. The distinction is not technical — it decides whether you have a position or a story.
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.