Mistakes, audits and bans
The EITC has one of the highest error rates of any part of the tax code, and the IRS audits it more than almost any other credit. Most errors are honest — a misunderstood child rule, a missed investment-income question, a preparer who guessed. But the consequences of getting it wrong can last years, so this guide covers the common mistakes, what an audit looks like, and the bans the IRS can impose.
- The most common error: claiming a child who does not pass all four tests.
- A second common error: forgetting investment income above the limit.
- Reckless or intentional disregard can bring a 2-year ban; fraud can bring a 10-year ban.
- You can generally amend a return for up to three years back to claim a missed credit.
The common mistakes
Claiming the wrong child. The child must pass the relationship, age, residency, and joint-return tests, and only one person can claim them. Separated parents claiming the same child is the single biggest audit trigger — agree in advance who claims the child (see qualifying child rules).
Missing investment income. Interest, dividends, or a capital gain above the $11,950 limit for 2025 removes eligibility entirely. Workers who sold an investment during the year are the most likely to miss this.
Wrong income figures. Understating income raises the credit during phase-out and lowers it during phase-in — either way, the IRS matches your return against employer wage reports, and a mismatch draws a letter. Self-employment income with no records is checked especially closely.
Wrong filing status. Filing as married filing separately generally bars the credit, and filing as head of household when you do not qualify for that status creates a second error on top of the first.
What an audit looks like
An EITC audit usually starts as a letter, not a visit. The IRS asks for documents: proof the child lived with you (school or medical records), proof of your relationship to the child, and proof of your income. You reply by mail with copies — keep originals. If the documents support your claim, the credit stands. If they do not, the IRS disallows some or all of the credit and you repay the difference, plus interest in some cases. You can appeal a disallowance, and low-income taxpayer clinics offer free help with EITC disputes if you qualify.
Respond to every IRS letter by its deadline, even if only to ask for more time. Ignoring a letter is the fastest way to turn a fixable error into a disallowance.
The bans — and amended returns
If the IRS finds that a claim was made with reckless or intentional disregard of the rules, it can bar you from claiming the EITC for the next two tax years. If it finds fraud, the ban is ten years. These bans are in addition to repaying the credit. They are the reason a preparer's promise of a large credit should never be taken at face value: the ban falls on you, not on the preparer.
On the other side, if you qualified in a past year and did not claim the credit, you can generally file an amended return (Form 1040-X) for up to three years from the original filing deadline. Processing an amended return can take several months — no hard promise on timing — but the credit, if allowed, is paid as a refund. If you are amending, include Schedule EIC and the same proof you would keep for an audit.
Sources to check: IRS Publication 596, Earned Income Credit (2025); IRS, Earned Income Tax Credit (EITC) — audits and appeals (irs.gov).