If your tax preparer made a mistake on your return, you’re still the one the IRS looks to for the tax, the penalties, and the interest, because you signed the return. What you can do is file an amended return to fix the error, ask the IRS to remove penalties where the rules allow, and pursue the preparer separately for the costs their negligence caused you.
Why the Bill Lands on You
This is the part that frustrates people the most. When you sign a return, you accept responsibility for everything on it. The IRS does not care that you paid someone else to prepare the numbers. If the return understates income or overclaims deductions, the additional tax is yours to pay.
Preparers do face their own penalties for causing understatements, but those penalties are paid to the IRS, not to you.1Office of the Law Revision Counsel. 26 U.S. Code 6694 – Understatement of Taxpayer’s Liability by Tax Return Preparer Your job is to correct the return with the IRS, then go after the preparer separately for what their mistake cost you.
Documentation decides most of these disputes. Keep the engagement letter, every email, the documents you handed the preparer, and your copy of the return. If the error happened because the preparer ignored figures you gave them, that paper trail proves the fault was theirs. If you gave the preparer bad numbers, the blame shifts back to you.
What the Mistake Could Cost
Three penalties show up most often in preparer-error situations, and they can stack.
- Failure-to-pay penalty: 0.5 percent of the unpaid tax each month, up to 25 percent.2Office of the Law Revision Counsel. 26 USC 6651 – Failure to File Tax Return or to Pay Tax
- Failure-to-file penalty: 5 percent per month of the unpaid tax, also capped at 25 percent. When both apply in the same month, the failure-to-file amount is reduced by the failure-to-pay amount.3Internal Revenue Service. Failure to File Penalty
- Accuracy-related penalty: a flat 20 percent of the underpayment when the IRS finds negligence or a substantial understatement. A substantial understatement means the shortfall exceeds the greater of $5,000 or 10 percent of the tax that should have been shown.4Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments
Interest runs on top of any unpaid tax from the original due date. For the first quarter of 2026, the individual underpayment rate is 7 percent, compounded daily.5Internal Revenue Service. Interest Rates Remain the Same for the First Quarter of 2026 Interest almost never gets waived. It runs until the balance is paid.
Fix the Return With Form 1040-X
The correction tool is Form 1040-X, Amended U.S. Individual Income Tax Return. You generally have three years from the date you filed the original return, or two years from the date you paid the tax, whichever is later.6Internal Revenue Service. File an Amended Return Miss that window and you lose the ability to claim a refund on the corrected figures.
Gather Documents and Recalculate
Pull together every record that touches the error: corrected W-2s or 1099s, receipts for deductions that were miscalculated, and any schedules from the original return that need updating. Recalculate the correct tax yourself, or hire a different preparer to do it. The difference between what you originally reported and the correct figures is the core of the amendment.
Complete the Form Carefully
Form 1040-X uses three columns: what you originally reported, the corrected figures, and the difference. Part III asks for an explanation. Be specific. “My preparer failed to include $12,000 in 1099-NEC income” is far more useful to the IRS than “preparer error.” Attach corrected schedules and supporting documents.
You can e-file Form 1040-X for the current tax year and the two prior years. Older amendments, or amendments to a paper-filed prior-year return, have to be mailed.7Internal Revenue Service. About Form 1040-X, Amended U.S. Individual Income Tax Return Processing typically takes 8 to 12 weeks and can stretch to 16.8Internal Revenue Service. Amended Return Frequently Asked Questions Track it with the “Where’s My Amended Return?” tool on the IRS website.
Pay When You File, Not When the IRS Gets Around to It
Here is where people lose money unnecessarily. Penalties and interest run from the original due date, not from the date the IRS processes your 1040-X. If the corrected return shows a balance due, pay it when you submit the amendment. The IRS accepts electronic payments through its website, and you can authorize a direct debit at the time of e-filing.9Internal Revenue Service. Instructions for Form 1040-X Every day you wait adds to the total.
If you cannot pay in full, paying what you can still shrinks the base that penalties and interest sit on. An installment agreement drops the monthly failure-to-pay penalty from 0.5 percent to 0.25 percent for as long as the agreement is active.2Office of the Law Revision Counsel. 26 USC 6651 – Failure to File Tax Return or to Pay Tax
Ask the IRS to Remove the Penalties
Penalties are negotiable in ways that interest is not. Two paths cover different penalties, so match the request to the penalty you’re trying to remove.
First Time Abatement for the Filing and Payment Penalties
If your compliance record is clean for the three tax years before the penalty year, you can request First Time Abatement. You need to have filed all required returns for those three years, had no penalties assessed during that period (or had any penalties removed for an acceptable reason), and paid or arranged to pay the current balance.10Internal Revenue Service. Administrative Penalty Relief
First Time Abatement only removes failure-to-file, failure-to-pay, and failure-to-deposit penalties. It does not touch the 20 percent accuracy-related penalty, which is the one preparer errors most commonly trigger. You can request it by calling the number on your IRS notice, and many representatives can approve it during the call.
Reasonable Cause for the Accuracy-Related Penalty
For the accuracy-related penalty, argue reasonable cause. This is where reliance on a tax professional actually carries weight. The IRS considers whether you gave the preparer complete and accurate information, whether the preparer had the expertise to handle your tax situation, and whether your reliance was objectively reasonable given the complexity involved.11Internal Revenue Service. Reasonable Cause and Good Faith
One limitation to know about: the IRS Internal Revenue Manual states that your responsibility to file and pay on time generally cannot be excused by reliance on a tax advisor.12Internal Revenue Service. 20.1.1 Introduction and Penalty Relief “My preparer told me I didn’t need to file” is unlikely to get a failure-to-file penalty removed on reasonable cause. Use First Time Abatement for the filing and payment penalties, and save the reasonable-cause argument for the accuracy penalty where it has real force.
Submit the reasonable-cause request in writing on Form 843, Claim for Refund and Request for Abatement.13Internal Revenue Service. Instructions for Form 843 – Claim for Refund and Request for Abatement Lay out the facts: what you gave the preparer, what the preparer did wrong, and why you had no reason to suspect the error. Wait until the IRS finishes processing your amended return and formally assesses the penalty before submitting the request.
Amend Your State Return Too
A change on your federal return almost always changes your state tax liability.14Internal Revenue Service. Topic No. 308, Amended Returns Most states require you to file an amended state return within a set window after a federal adjustment, commonly ranging from 60 to 180 days depending on where you live. Some states treat a failure to report the federal change as its own violation, with separate penalties. Contact your state tax agency as soon as you file the federal amendment. If the same preparer did both returns, expect the same errors on the state one.
Recover the Damages From the Preparer
Fixing the return with the IRS is one process. Getting reimbursed by the preparer is a separate one. Run them in parallel.
What You Can Recover
The general principle in professional malpractice is that you can recover costs that would not have existed if the preparer had done the job correctly. That typically covers the penalties, the interest, the fee you paid the preparer, and any fees paid to a second professional to fix the error. You generally cannot recover the underlying tax itself, because you would have owed that anyway. The test is whether the cost was caused by the negligence or would have existed regardless.
Make a Written Demand First
Send the preparer a direct written demand. Include the amended return, the IRS notice showing penalties and interest, and a specific dollar amount you want reimbursed. Many reputable preparers carry errors and omissions insurance, which is professional liability coverage designed for exactly this situation. If the preparer cooperates, the claim may move through their insurer without much friction.
Read your engagement letter. Some contracts cap the preparer’s liability at the amount of their fee. Those clauses hold up in many situations, though they may not protect the preparer against gross negligence or intentional misconduct.
If the Preparer Refuses
Small claims court handles disputes involving amounts that typically range from $2,500 to $25,000 depending on your jurisdiction. For larger amounts, a tax attorney who handles professional liability cases can evaluate whether a formal malpractice suit makes sense given the damages involved.
Report the Preparer
Reporting the preparer is separate from recovering money, and you can do both. Which body hears the complaint depends on the preparer’s credentials.
For any paid preparer, including those with no professional designation, use Form 14157. You can submit it online, by fax to 855-889-7957, or by mail to the IRS Return Preparer Office.15Internal Revenue Service. Make a Complaint About a Tax Return Preparer If the misconduct affected your return or refund directly, also complete Form 14157-A, the Tax Return Preparer Fraud or Misconduct Affidavit, and include supporting documentation such as copies of what the preparer gave you, payment records, and correspondence.
If the preparer is a CPA, enrolled agent, or attorney, the IRS Office of Professional Responsibility can investigate and discipline practitioners who violate Treasury Circular 230. OPR can censure, suspend, or permanently disbar a practitioner from representing anyone before the IRS.16Internal Revenue Service. Office of Professional Responsibility Frequently Asked Questions For a CPA, you can also file with the state board of accountancy in the state where the CPA is licensed.
Ghost Preparers
A ghost preparer takes your fee, prepares your return, and refuses to sign it or include their Preparer Tax Identification Number. This is illegal, and it is a serious warning sign, because a preparer hiding their identity has little incentive to get your return right.
If your preparer did not sign the return, report them using both Form 14157 and Form 14157-A.17Internal Revenue Service. Form 14157-A, Tax Return Preparer Fraud or Misconduct Affidavit Gather anything that proves you used a paid preparer: business cards, advertisements, cancelled checks or credit card statements showing payment, emails or text messages about the return, and copies of Form 8879 if the preparer e-filed on your behalf. Mail the completed forms and documentation to the address on any IRS notice you received, or to the address where you would normally file your Form 1040 if no notice was sent.
Ghost preparers tend to disappear when things go wrong, which makes reimbursement difficult. If you are shopping for a preparer, confirm they have a valid PTIN and will sign the return before you hand over documents or payment.