Audits & Appeals

IRS Audit Reconsideration: How to Reopen an Audit (2026)

By Angeline Balsitis, EA · Reviewed by Melissa Ly, Chief Tax Officer · Updated January 31, 2026 · Editorial Standards

What audit reconsideration is — and when to use it

An audit reconsideration is the IRS taking a second look at a tax assessment it already made after an audit. It applies in two main situations: the IRS audited your return and changed it, or the IRS filed a substitute return for you and assessed tax based on incomplete information. In both cases, you're now saying: "Those numbers are wrong, and here's the proof."

The IRS explains the basics on its own page, Audit Reconsideration, and in Publication 3598. You're a candidate if any of these are true:

• You have new information — receipts, statements, corrected forms — the auditor never saw.
• You never showed up for or answered the original audit, often because the letters went to an old address.
• You moved and the IRS mailed everything to a place you'd left.
• The IRS filed a return for you and the assessment doesn't reflect your real income, deductions, or dependents.
• You disagree with the audit changes and can back up your position with records.

It is not a do-over for arguments you already lost. You cannot use audit reconsideration if you already paid the balance in full, signed a closing agreement (Form 906), agreed to the changes on Form 870-AD, or a court has already decided the issue. If you've paid in full, your route is a refund claim instead — usually Form 1040-X.

What happens if you ignore the assessment

The tax the IRS assessed after the audit is a real, enforceable debt. Doing nothing doesn't make it go away — it puts you on the automated collection track, where each step carries more weight:

1. Balance-due notices (CP14, CP501, CP503) — bills that grow every month with penalties and interest.
2. CP504 — Notice of Intent to Levy. The IRS can take your state tax refund and a federal tax lien becomes likely.
3. LT11 / Letter 1058 — Final Notice of Intent to Levy. After 30 days the IRS can garnish wages and levy bank accounts.
4. Liens and levies — your credit, your paycheck, and your accounts are all exposed at this point.

Here's the key point: requesting reconsideration does not automatically stop this. You have to ask for a collection hold in writing, and you generally have to keep an eye on the calendar — collection continues unless someone pauses it.

Does audit reconsideration stop collection?

Not on its own. Penalties and interest keep running, and collection keeps moving while the IRS reviews your file. But you have options:

• Request a collection hold in writing when you file your reconsideration package, so the IRS pauses enforcement on the disputed years while it reviews.
• Ask for an emergency levy release if a garnishment or bank levy is causing real hardship — see our guide to an emergency levy release for hardship.
• Set up a temporary arrangement if you need breathing room while the review is pending, such as a short-term plan or hardship status.

None of this changes the fact that the debt is still on the books until the IRS agrees with you. Plan for that.

How to request IRS audit reconsideration, step by step

1. Get your audit report. Find your copy of Form 4549 (the examination changes) and the letter that came with it. If you don't have it, you can request a copy of your account and the audit file.
2. Pin down exactly what's wrong. Identify each line item you disagree with — a denied deduction, missing dependent, income that isn't yours. Be specific. Vague disagreement gets denied.
3. Gather only new proof. Pull together documents the IRS hasn't already reviewed: receipts, bank statements, canceled checks, mileage logs, corrected 1099s, birth certificates or school records for dependents. Send copies, never originals.
4. Write a clear cover letter. State that you're requesting audit reconsideration, list the tax year(s), explain why the original assessment is wrong, and reference the documents you've attached.
5. Mail it to the right office. Send the package to the IRS address on your audit notice — the office that made the change handles the reconsideration. Use certified mail and keep proof of what you sent.
6. Ask for a collection hold in the same letter, so enforcement pauses on those years while the IRS reviews.
7. Keep copies of everything and follow up. Reviews can take a few months; a complete, organized package moves faster than a thin one.

If the assessment came from a return the IRS filed for you, you may need to file the actual original return for that year as part of the fix. The order matters: file the correct return, then attach it to the reconsideration request so the IRS can replace its estimate with your real numbers.

A worked example

Say the IRS audited your 2022 return, disallowed $18,000 of business expenses because you never responded, and assessed about $4,500 in extra tax plus penalties and interest. The notices went to your old apartment, so you never saw them. You actually had the receipts the whole time.

With audit reconsideration, you'd send a letter explaining you never received the audit notices, a copy of Form 4549, and copies of your receipts, bank statements, and mileage log showing those expenses were real. If the IRS agrees, it reduces or removes the assessment — and the related penalties and interest come down with it. No fee, no court. That's the case audit reconsideration is built for.

Audit reconsideration vs. other paths

Reconsideration isn't the only door, and it isn't always the right one:

• If you got a Notice of Deficiency and the 90 days haven't passed: you may be better off filing a Tax Court petition. See the CP3219A Notice of Deficiency guide and our overview of the 90-day letter and Tax Court petition.
• If you already paid the tax in full: reconsideration isn't available — file a refund claim (Form 1040-X) instead.
• If you simply can't pay what's owed and the audit was correct: reconsideration won't help; a payment plan, hardship status, or other relief is the path.

If the debt is large or several years are tangled together, it's worth understanding the 10-year collection statute before you decide — timing affects every option. The free Taxpayer Advocate Service can also help if collection is causing real hardship.

Audit reconsideration questions, answered

This guide is general information, not tax or legal advice for your specific situation. Eligibility for IRS programs depends on individual facts and circumstances; no outcome is guaranteed.

Related: The IRS filed a return for you (SFR) · CP3219A — Notice of Deficiency · The 10-year collection statute · or browse all guides.