Income mismatch & return changes

CP10 notice — Handle it this month

The IRS adjusted your return and applied part or all of your refund to a balance you owe for a different tax year — this notice explains the change and where the money went.

Handle it

What this letter is

The IRS adjusted your return and applied part or all of your refund to a balance you owe for a different tax year — this notice explains the change and where the money went.

Why you got it: You had a balance on another year's account when a refund posted on this one; the law lets the IRS move the money (26 U.S.C. 6402).

What it is not

Not new tax. It's an accounting letter: a refund you expected was redirected to an older debt under the IRS's offset authority.

Your first move: Verify both sides: the adjustment to this return, and the older balance the refund went to. Errors usually hide in one of those two numbers.

Your deadline, counted

The clock on this letter: No payment deadline — check the figures promptly.

Nothing is due on this notice. Challenges to the adjustment follow the notice's instructions; challenges to the older balance follow that year's rules.

Your options, in the order most people should try them

1. Verify and file

Most CP10s are correct; verify once, then keep it with both years' records.

2. Challenge the older balance

If that balance was wrong or already paid, that's the fight — not this notice.

Your rights on this letter

  • Dispute the adjustment (with documents) or the underlying older balance (through that year's process).
  • Account transcripts show exactly what moved, when, and to which year.

How to respond

Questions go to the number on the notice; keep the notice with both years' files.

Scam check

'Your refund was seized — pay to release it' is a scam script. A real offset is visible on your transcripts.

If you ignore it

The money stays applied. If either figure was wrong, correcting it gets harder as records age — transcripts keep the trail.

Where this sits on the ladder: This letter stands on its own track — see the collection ladder for the enforcement road.

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Sources, checked 2026-10-19: