IRA Audit Triggers, Penalties, and How to Prepare

An IRA audit is an IRS examination of your Individual Retirement Account to confirm that contributions, distributions, and any investments inside the account follow federal tax law. Most audits target self-directed IRAs holding real estate or private assets, but a standard account can also draw attention when the numbers on your return don’t match what your custodian reported, or when contributions exceed the annual limit ($7,500 in 2026, or $8,600 if you’re 50 or older).¹ The stakes are unusually high for a single account type: one prohibited transaction can strip the entire IRA of its tax-advantaged status and turn the full balance into a taxable distribution.

What Triggers an IRA Audit

The IRS doesn’t pick IRA returns at random. Automated systems compare custodian reporting against your Form 1040, and certain patterns light up the review queue.

Prohibited Transactions

A prohibited transaction is any deal between your IRA and a “disqualified person” — you, your spouse, your parents, your children and their spouses, or any fiduciary of the account.² Borrowing from the IRA, selling personal property to it, living in a house it owns, or pledging its assets as collateral all qualify. The consequence isn’t a fine on top of a working account. The account stops being an IRA as of January 1 of the year the transaction happened, and the full fair market value is treated as distributed to you on that date.³

Valuation Problems in Self-Directed Accounts

Real estate, private company interests, and other hard-to-price assets have to be valued at fair market value at least once a year.⁴ A low value shrinks required minimum distributions. A high value makes Roth conversions look bigger or excess contributions look smaller. The IRS notices both directions, and appraisals produced by the account holder or someone connected to the deal are treated as red flags during examination.

Reporting Mismatches

Your custodian files Form 5498 (contributions and rollovers) and Form 1099-R (distributions) directly with the IRS. When your return says one thing and those forms say another — a taxable distribution reported as a tax-free rollover, or a Roth conversion left off the return entirely — the mismatch can generate an automated notice or a full examination.

Rollover Violations

You’re allowed one indirect (60-day) IRA-to-IRA rollover in any 12-month period, aggregated across every IRA you own — traditional, Roth, SEP, and SIMPLE combined. A second rollover in the window becomes a taxable distribution, and any money you redeposited becomes an excess contribution subject to a 6% annual excise tax for as long as it stays in the account.⁵ If you’re under 59½, add the 10% early withdrawal tax on top. Trustee-to-trustee transfers don’t count against the limit, which is why most advisors route money that way.

Missing Form 8606

If you’ve ever made nondeductible contributions to a traditional IRA, Form 8606 tracks your after-tax basis. Skipping it costs $50 per missed form, but the real damage comes later.⁶ Without documented basis, the IRS can treat your entire distribution or Roth conversion as fully taxable because you can’t prove any portion was after-tax money. People lose thousands over a form most have never heard of.

The Three Formats an Audit Can Take

The IRS always opens by mail. The notice identifies the tax years under review, the specific items in question, and the type of examination.

Correspondence audit. Everything happens by mail. The IRS asks for documentation on specific items — typically excess contributions or unreported distributions — and the matter can close in a few weeks if you respond promptly.
Office audit. You or your representative meet an examiner at an IRS office. These handle disputed rollovers, basis calculations, and multi-year issues. The IRS tells you in advance what to bring.
Field audit. An agent comes to your home, business, or representative’s office. Field audits are reserved for the most complex cases — self-directed IRAs holding real estate or private business interests, and suspected prohibited transactions. They take the longest and dig the deepest.

Confirm the response deadline in the notice the day you receive it, and verify the auditor’s identity by calling the IRS directly through the number on official letterhead rather than any number provided in another channel.

Whether to Hire Help

A straightforward correspondence audit about an excess contribution is usually manageable on your own. Anything involving prohibited transactions, asset valuations, or multiple tax years is worth handing to a CPA or tax attorney who handles IRS examinations. Experienced CPAs generally charge $150 to $400 per hour for audit defense, and tax attorneys somewhat more. If you hire a representative, they’ll file Form 2848 (Power of Attorney) so they can communicate, negotiate, and receive notices for you.⁷ You don’t have to speak to the examiner directly once an authorized representative is on file.

What an Audit Can Cost You

The burden of proof rests on you. You have to substantiate every entry on your return through documentary evidence, and if you can’t, the examiner will disallow the position.⁸ The penalties vary sharply depending on what went wrong.

Full Account Disqualification

The worst outcome follows a prohibited transaction. The account stops being an IRA as of January 1 of the year the transaction occurred, and the entire balance is treated as distributed to you at fair market value on that date.³ You owe ordinary income tax on the full amount, plus the 10% early distribution penalty if you were under 59½.⁹ On a large self-directed IRA, a single mistake can create a six-figure bill.

Excise Taxes on Prohibited Transactions

Separately from disqualification, the disqualified person who participated in the transaction owes an initial excise tax of 15% of the amount involved for each year the transaction is uncorrected. If it isn’t reversed during the correction period, a second tax of 100% of the amount involved kicks in.¹⁰ Correction means undoing the transaction as completely as possible without leaving the IRA in a worse financial position.¹¹

Excess Contributions

Contributing more than the annual limit triggers a 6% excise tax on the excess for every year it stays in the account.¹² You can avoid the penalty by withdrawing the excess plus any earnings before your tax filing deadline, including extensions.¹³ Withdrawn earnings are taxable, and the 10% early withdrawal penalty applies to them if you’re under 59½. Miss the deadline, and you still have a six-month window from the return’s due date (without extensions) to withdraw and file an amended return.

Missed Required Minimum Distributions

Starting at age 73, you must take annual RMDs from traditional IRAs.¹⁴ Falling short triggers a 25% excise tax on the amount you didn’t take, reduced to 10% if you correct it within two years.¹⁵

Early Distributions

Distributions before age 59½ generally carry an additional 10% tax on top of ordinary income tax unless you qualify for a specific exception such as disability, substantially equal periodic payments, or certain first-time homebuyer expenses.¹⁶

Accuracy-Related Penalty and Interest

If the IRS finds the understatement came from negligence or was substantial (exceeding the greater of $5,000 or 10% of the tax that should have been shown), a 20% accuracy-related penalty attaches to the underpayment.¹⁷ Interest runs on unpaid tax from the original due date. The individual underpayment rate for the first quarter of 2026 is 7% per year, compounded daily.¹⁸ Because audits often span multiple years and take months to resolve, interest alone can grow the final number substantially.

Documents You’ll Need

Preparation starts with custodian statements covering every year under review. Those confirm balances, holdings, contributions, distributions, rollovers, and conversions. Add copies of Form 5498 and Form 1099-R for each year, and any Form 8606 filings that establish your nondeductible basis. Pull the buy and sell confirmations for any assets bought or sold inside the IRA.

If the account holds real estate or another hard-to-value asset, the most important document you can produce is an independent appraisal from a qualified appraiser with no connection to the transaction. Internal estimates carry almost no weight.

When the IRA holds real estate or a closely held business interest, examiners look hard at whether IRA money stayed separate from personal money. Expect to produce dedicated bank account statements showing that property taxes, insurance, maintenance, and repairs were paid directly from the IRA. Any commingling suggests a prohibited transaction. Documentation that you never personally used or benefited from IRA-held property matters equally.

Keep retirement account records at least until all benefits have been distributed and the audit window has closed for the final distribution year.¹⁹ Form 8606 filings and contribution records deserve permanent storage — you may need to prove basis decades later, and losing the records means losing the proof.

Disagreeing With the Result

When the examiner finishes, you’ll receive a Revenue Agent’s Report listing every proposed adjustment. If you sign the agreement, the case closes and you waive the right to appeal those items. If you disagree, the IRS issues a 30-day letter giving you 30 days to request a conference with the Independent Office of Appeals.²⁰ Appeals officers can settle cases and weigh the hazards of litigation, which sometimes means they accept positions the original examiner rejected.

Miss the 30-day window, or fail to resolve the dispute at Appeals, and the IRS issues a Notice of Deficiency (the 90-day letter). You then have 90 days to petition the U.S. Tax Court to dispute the assessment without paying first, or 150 days if the notice is sent to an address outside the United States.²¹ Miss that deadline too, and the IRS assesses the tax; your remaining option is to pay and sue for a refund in federal district court or the Court of Federal Claims.

How Far Back the IRS Can Go

The IRS generally has three years from the date you filed to assess additional tax. The window stretches to six years if you omitted from gross income an amount exceeding 25% of the gross income shown on your return — a scenario that can arise when a large IRA distribution goes unreported or a disqualified account’s deemed distribution isn’t included. There’s no time limit at all in two cases: a fraudulent return filed with intent to evade tax, and a return that was never filed. Either one leaves the assessment open forever.²²

Fixing Problems Before the IRS Finds Them

Self-correction is almost always cheaper than defending the same issue during an audit. Withdraw excess contributions by your filing deadline, extensions included, and the 6% annual penalty disappears.¹³ A missed RMD can be taken late and reported on Form 5329 with a penalty waiver request based on reasonable cause. The IRS grants these waivers with some regularity when the shortfall is corrected quickly and the error wasn’t willful.

Late Form 8606 filings for prior years can still establish your nondeductible basis. The $50-per-form penalty is trivial next to paying income tax on money you already paid tax on.⁶ Rollover violations are harder to unwind once the 60-day window closes, but the IRS does grant hardship waivers in limited circumstances through a self-certification process or a private letter ruling.

One category resists self-correction: a prohibited transaction. By the time you notice it, the account has already lost its tax-advantaged status by operation of law. You can still correct the transaction to keep the excise tax at 15% rather than escalating to 100%, but you can’t undo the disqualification itself.¹¹ Getting a compliance review before any unusual IRA transaction — real estate, private lending, business investments — is the single most valuable step a self-directed IRA holder can take.

1
Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026; IRA Limit Increases to $7,500
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Internal Revenue Service. Retirement Topics – Prohibited Transactions
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Office of the Law Revision Counsel. 26 U.S. Code 408 – Individual Retirement Accounts
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Internal Revenue Service. Valuation of Plan Assets at Fair Market Value
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Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions
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Internal Revenue Service. 2025 Instructions for Form 8606
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Internal Revenue Service. About Form 2848, Power of Attorney and Declaration of Representative
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Internal Revenue Service. Burden of Proof
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Internal Revenue Service. Topic No. 557, Additional Tax on Early Distributions From Traditional and Roth IRAs
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Office of the Law Revision Counsel. 26 U.S. Code 4975 – Tax on Prohibited Transactions
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Internal Revenue Service. Retirement Topics – Tax on Prohibited Transactions
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Office of the Law Revision Counsel. 26 U.S. Code 4973 – Tax on Excess Contributions to Certain Tax-Favored Accounts and Annuities
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Internal Revenue Service. Instructions for Form 5329 (2025)
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Internal Revenue Service. Retirement Plan and IRA Required Minimum Distributions FAQs
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Internal Revenue Service. Retirement Topics – Required Minimum Distributions (RMDs)
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Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions
17
Office of the Law Revision Counsel. 26 U.S. Code 6662 – Imposition of Accuracy-Related Penalty on Underpayments
18
Internal Revenue Service. Interest Rates Remain the Same for the First Quarter of 2026
19
Internal Revenue Service. Maintaining Your Retirement Plan Records
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Taxpayer Advocate Service. Audit Report Letter Giving Taxpayer 30 Days to Respond
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22
Office of the Law Revision Counsel. 26 U.S. Code 6501 – Limitations on Assessment and Collection