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TaxEarPart 1Retirement income

Income and Assets · Retirement income

Prohibited transactions and their tax effects

Verification 2026 Verified
tax year · reviewed 2026-08-19 · Draft for N. O. review
This is about deals a retirement account is not allowed to make with certain people close to its owner — the owner, family members, or a business the owner controls. Buying, selling, lending, or even just using something the account owns are all off limits with those people, no matter how fair the price. It affects anyone who runs a self-directed IRA holding property or a private business, since that is where these deals tend to happen. The stakes differ sharply by account type. A work plan that breaks this rule owes a tax. An IRA that breaks it stops being an IRA at all, backdated to the start of that year, with everything inside treated as paid out at once.

Two entirely different consequences hide behind one phrase. For an employer plan, a prohibited transaction triggers an excise tax that recurs annually and then escalates. For an individual retirement account, there is no excise tax at all — the account simply stops being an IRA, backdated to the first day of the year, and is treated as having distributed everything in it. The second is far worse, and it is the one most clients are exposed to.

The rule

Six categories, direct or indirect. A prohibited transaction means any direct or indirect sale, exchange or leasing of property between a plan and a disqualified person; lending of money or other extension of credit between them; furnishing of goods, services or facilities between them; transfer to, or use by or for the benefit of, a disqualified person of the income or assets of a plan; an act by a disqualified person who is a fiduciary dealing with plan income or assets in his own interest or for his own account; and receipt of consideration for his own personal account by a fiduciary from a party dealing with the plan (IRC § 4975(c)(1)(A)–(F)).

Who is disqualified is wider than “the owner”. The term reaches a fiduciarySomeone legally responsible for managing property or money for another person's benefit, held to a high standard of care and loyalty. An executor and a trustee are both fiduciaries.; a person providing services to the plan; an employer whose employees are covered; an employee organization whose members are covered; a substantial owner of such an employer or organization; a member of the family of most of those; an entity substantially owned by them; and officers, directors and highly compensated employees (IRC § 4975(e)(2)(A)–(H)). Family is defined in § 4975(e)(6), and the ownership thresholds are in the table below.

The plan-side tax has two tiers. A tax of 15 percent of the amount involved is imposed for each year or part of a year in the taxable period, paid by any disqualified person who participated other than a fiduciary acting only as such (IRC § 4975(a)). If the transaction is not corrected within the taxable period, a further tax of 100 percent of the amount involved is imposed (IRC § 4975(b)).

For an IRA the rule is different in kind. If, during any taxable year of the individual for whose benefit the account is established, that individual or their beneficiaryThe person or entity entitled to receive money or property from a trust, estate, retirement account, or insurance policy. engages in any transaction prohibited by § 4975 with respect to the account, the account ceases to be an individual retirement account as of the first day of that taxable year (IRC § 408(e)(2)(A)). It is then treated as distributing all its assets at their fair market value on that first day (IRC § 408(e)(2)(B)).

And the excise tax then falls away. The individual and their beneficiaries are exempt from the § 4975 tax with respect to any transaction concerning the account where the account ceases to be an IRA under § 408(e)(2)(A) or where § 408(e)(4) applies (IRC § 4975(c)(3)). So the two consequences are alternatives, not cumulative — and the one that applies to an IRA owner is the harsher.

Each plan is treated separately. For § 408(e)(2) purposes each individual retirement plan of the individual is treated as a separate contract (IRC § 408(e)(2)(A)(iii)), so a prohibited transaction in one account does not destroy the others.

Pledging is narrower, and deliberately so. Where the individual uses the account or any portion of it as security for a loan, only the portion so used is treated as distributed (IRC § 408(e)(4)). That is a partial consequence rather than the total disqualification a prohibited transaction brings — a distinction that decides how much damage an act does.

Borrowing against an annuity is different again. Where the owner of an individual retirement annuity borrows any money under or by use of the contract, the contract ceases to be an individual retirement annuity (IRC § 408(e)(3)).

Current figures

Item2026
The six categoriesVerified 2026-08-19IRC § 4975(c)(1)(A)-(F) — https://www.law.cornell.edu/uscode/text/26/4975
Disqualified personsVerified 2026-08-19IRC § 4975(e)(2)(A)-(H) — https://www.law.cornell.edu/uscode/text/26/4975
Excise tax on a plan transactionVerified 2026-08-19IRC § 4975(a), (b) — https://www.law.cornell.edu/uscode/text/26/4975
Consequence for an IRAVerified 2026-08-19IRC § 408(e)(2)(A), (B); IRC § 4975(c)(3) — https://www.law.cornell.edu/uscode/text/26/408
Pledging as securityVerified 2026-08-19IRC § 408(e)(4) — https://www.law.cornell.edu/uscode/text/26/408
Additional tax on early distributionsVerified 2026-08-19IRC § 72(t)(1) — https://www.law.cornell.edu/uscode/text/26/72

How it works in practice

The exposure arises almost entirely with self-directed accounts holding real property, private businesses or loans. A conventionally invested IRA holding listed securities has essentially no way to engage a disqualified person; an IRA that owns a rental property has several, and they are not obvious ones.

Test the counterparty against § 4975(e)(2) before the transaction, and remember that family members are in the definition. An IRA buying property from the owner’s son, lending to a company the owner half controls, or paying the owner’s spouse to manage the property are all within the six categories, whatever the price or the commercial merits. Section 4975(c)(1) reaches indirect dealings too, so routing a transaction through an intermediary does not help.

Watch for the categories that do not involve money changing hands. Subparagraph (D) reaches the use by or for the benefit of a disqualified person of plan assets — so the owner staying a weekend at an IRA-owned holiday property, or storing goods in an IRA-owned warehouse, is within it. Nothing was bought or sold and the account is still destroyed.

Where a client is already exposed, quantify the damage before advising. For an IRA the deemed distribution is measured at first-day fair market value, so a transaction in December is valued at the previous 1 January — which may be more or less than the current value, and is a figure the custodian can supply. The distribution is includible under § 408(d)(1), and § 72(t) will apply to the includible portion unless an exception reaches it. There is no correction procedure that undoes § 408(e)(2).

A weekend at the IRA's cottage

Nadia’s self-directed IRA owns a holiday cottage let commercially all year. In August she and her husband stay there for a long weekend, paying nothing.

The account is destroyed. IRC § 4975(c)(1)(D) reaches the transfer to, or use by or for the benefit of, a disqualified person of the income or assets of a plan, and she is a disqualified person as the account owner. No sale, no payment, no bargain — the use alone is enough.

The consequence is IRC § 408(e)(2)(A): the account ceased to be an individual retirement account on 1 January, not in August, and § 408(e)(2)(B) treats it as having distributed everything at its 1 January value. She has a distribution of the whole account, includible under § 408(d)(1), with the additional tax under § 72(t) on the includible portion if she is under 59½ and no exception applies. Paying a market rent would not have cured it — the category does not turn on consideration.

The loan that was not a distribution

Rafael pledges $30,000 of his $200,000 IRA as security for a personal bank loan.

This is the narrower rule. IRC § 408(e)(4) provides that where the individual uses the account or any portion thereof as security for a loan, the portion so used is treated as distributed. So he has a $30,000 deemed distribution — includible, and exposed to § 72(t) — while the remaining $170,000 survives as an IRA.

Contrast the same client borrowing directly from the IRA. That is an extension of credit between a plan and a disqualified person within IRC § 4975(c)(1)(B), and IRC § 408(e)(2) then destroys the whole account from the first day of the year. The two acts look similar to a client and differ by an order of magnitude.

Paying a family member to manage

Bea’s self-directed IRA owns three rental units. She engages her daughter, a licensed property manager, at a documented market rate to run them, and the IRA pays the fees.

Both limbs of the definition are met. Her daughter is a member of Bea’s family and so a disqualified person under IRC § 4975(e)(2)(F), and the arrangement is the furnishing of services between a plan and a disqualified person within IRC § 4975(c)(1)(C).

That the rate is arm's lengthThe standard for pricing a deal as if the parties were unrelated strangers each looking out for their own interest, rather than one side quietly favoring the other. and the arrangement documented does not matter. The categories are structural rather than valuation-based — the statute asks who dealt with the plan, not whether the deal was fair. An unrelated manager at the same rate would have been unobjectionable, and the account would have survived.

The account that never comes close

Tomas’s traditional IRA holds nothing but a handful of publicly traded index funds, bought and sold through his brokerage’s ordinary order screen. He has never used the account to buy property, lend money, or pay anyone he knows.

Nothing here approaches a prohibited transaction. None of the six categories in IRC § 4975(c)(1) is in play, because there is no disqualified person on the other side of an ordinary market trade with a stranger through an exchange — no sale to or from Tomas personally, no loan, no service arrangement, no use of the assets for anyone’s benefit but the account’s own. This is the ordinary case: exposure under this topic arises almost entirely with self-directed accounts holding real property, private businesses, or loans, not with a conventionally invested IRA like this one.

The custodian's after-the-fact correction

An IRA custodian learns in February 2027 that its owner engaged in a prohibited transaction in June 2026. The custodian must now report the account correctly.

The account ceased to be an IRA as of 1 January 2026 under IRC § 408(e)(2)(A) — not in June, when the transaction happened, and not in February 2027, when anyone found out. The custodian reports a full distribution for 2026 at the account’s 1 January 2026 fair market value on a Form 1099-R, and the owner includes that amount in 2026 income under § 408(d)(1), with § 72(t) reaching the includible portion if the owner was under 59½ at the time. Discovery date and transaction date do not move the reporting year; only the first day of the taxable year does.

Traps

  • For an IRA there is no excise tax — IRC § 4975(c)(3) exempts the owner and beneficiaries where § 408(e)(2)(A) or § 408(e)(4) applies. The consequence is destruction of the account instead.
  • Disqualification is backdated to the first day of the taxable year (IRC § 408(e)(2)(A)), so a December act is valued the previous January.
  • The whole account is deemed distributed, not the amount involved in the transaction.
  • Family members are disqualified persons (IRC § 4975(e)(2)(F)) — the definition is not confined to the owner.
  • Indirect dealings count (IRC § 4975(c)(1)), so an intermediary does not cure anything.
  • Use alone is a prohibited transaction (IRC § 4975(c)(1)(D)); no purchase or payment is needed.
  • A fair price is no defence. The categories are structural, not valuation tests.
  • Pledging is partial, borrowing is total. IRC § 408(e)(4) reaches only the portion used as security; a loan from the account is within § 4975(c)(1)(B) and destroys it.
  • An individual retirement annuity has its own rule — borrowing under the contract ends it (IRC § 408(e)(3)).
  • Each IRA is a separate contract for this purpose (IRC § 408(e)(2)(A)(iii)), so other accounts survive.
  • The plan-side first-tier tax recurs annually and is followed by a far larger second tier if the transaction is not corrected (IRC § 4975(a), (b)).

How this has changed

Section 4975 is among the more stable provisions in this outline. The six categories, the definition of a disqualified person, the two-tier rate structure and the § 408(e)(2) consequence have all been in place for decades, and the first-tier rate has been raised only once since enactment. Older material is therefore unusually reliable here, which is not true of most of the retirement topics around it.

What has changed is the exposure rather than the rule. Self-directed accounts holding real property, private company interests and promissory notes were once rare and are now widely marketed, so a provision written for plan fiduciaries now most often bites individual account owners who have never heard of it. Nothing in the section moved; the population it reaches did.

One drafting point is worth carrying forward because it is easy to read past. Section 4975(c)(3) exempts the IRA owner from the excise tax, which reads like relief and is not — it is the statute allocating a single, harsher consequence rather than stacking two. A source that lists the two excise tiers as the consequence of an IRA prohibited transaction has the mechanism backwards.

Exam focus

Know that the IRA consequence is disqualification under § 408(e)(2), not the § 4975 excise tax, and be able to say that § 4975(c)(3) is what allocates it that way.

Know that disqualification is as of the first day of the taxable year and that the whole account is deemed distributed at that day’s fair market value.

Know the six categories well enough to spot the one that needs no consideration — use by or for the benefit of a disqualified person.

Distinguish pledging from borrowing: § 408(e)(4) reaches only the portion pledged, while a loan from the account is a prohibited transaction destroying the whole thing.

Check yourself

1. An IRA owner sells a piece of land to their own IRA at an independently appraised market price. What is the consequence?

Answer: the account is destroyed. IRC § 4975(c)(1)(A) makes any direct or indirect sale or exchange of property between a plan and a disqualified person a prohibited transaction, and the owner is a disqualified person. The price is irrelevant — the category is structural. IRC § 408(e)(2)(A) then provides that the account ceases to be an IRA as of the first day of that taxable year, and § 408(e)(2)(B) treats all its assets as distributed at their first-day fair market value.

2. Does the 15 percent excise tax apply to an IRA owner who engages in a prohibited transaction with their own account?

Answer: no. IRC § 4975(c)(3) exempts the individual for whose benefit the account is established, and their beneficiaries, from the § 4975 tax with respect to any such transaction where the account ceases to be an IRA under § 408(e)(2)(A) or where § 408(e)(4) applies. The consequence is disqualification of the account instead — a single, harsher outcome rather than both.

3. A taxpayer pledges a quarter of their IRA as collateral for a personal loan. How much is treated as distributed?

Answer: the quarter pledged. IRC § 408(e)(4) provides that where the individual uses the account or any portion of it as security for a loan, the portion so used is treated as distributed. The rest of the account remains an IRA — unlike a prohibited transaction, which under § 408(e)(2) destroys the whole account from the first day of the year.

4. An IRA owns a commercial building. The owner’s brother rents a unit at full market rent. Is there a problem?

Answer: yes. IRC § 4975(e)(2)(F) makes a member of the family of a disqualified person a disqualified person, and § 4975(e)(6) defines family. Leasing property between a plan and a disqualified person is within § 4975(c)(1)(A). Market rent is no answer, because the category asks who dealt with the plan rather than whether the terms were fair, and § 408(e)(2) then disqualifies the account from the first day of the year.

Change log

  • Initial draft. Sets out the six IRC § 4975(c)(1) categories, the IRC § 4975(e)(2) definition of a disqualified person, the two-tier excise tax, and the very different IRC § 408(e)(2) consequence for an IRA together with the narrower IRC § 408(e)(4) pledge rule.
  • Added a plain-language summary, glossary marks, and two typed scenarios (baseline, procedural) alongside the three existing ones.

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