Income mismatch & return changes
The IRS corrected a math or clerical error on your return and the correction leaves you owing money. Buried in this ordinary-looking notice is an extraordinary right: ask within 60 days and the IRS must undo the assessment.
Don't sit on it
The IRS corrected a math or clerical error on your return and the correction leaves you owing money. Buried in this ordinary-looking notice is an extraordinary right: ask within 60 days and the IRS must undo the assessment.
Why you got it: An arithmetic slip, a wrong line pulled from a schedule, a credit computed differently — the IRS's processing found an error visible on the face of the return.
Not an audit, and not a normal bill. Because the IRS used its summary 'math error' power, you hold a 60-day abatement right that regular bills don't carry — and most recipients never learn it exists (the notice doesn't use the words 'math error' at all).
Your first move: Check the IRS's math against your return. If they're wrong — or even if you're not sure — a written abatement request inside 60 days forces the undo; the IRS then has to use the slow deficiency process (with Tax Court rights) if it still wants the money.
Every clock runs from this date — not from the day the letter reached you.
One letter inside 60 days: identify the notice, ask for abatement under 6213(b). Certified mail.
If their math is right, pay by the printed date to stop interest.
A phone call can fix simple cases fast — but the written request inside 60 days is what protects the right.
Call the number on the notice for speed AND send the written abatement request to the address on the notice, certified mail, if you dispute any part.
Because CP11 asks for money, fakes circulate. Verify in your online account — and remember a real one never threatens arrest or demands prepaid cards.
The change becomes final, the balance joins the collection ladder, and you generally lose the right to have the change reversed or reviewed by the Tax Court. (The IRS may still consider late documentation informally — the right is what's lost.)
Where this sits on the ladder: CP14 → CP3219A →
One payment. No subscription. Yours to keep — every notice, every letter, every script.