Benefits – form

Tax credits: dispute recovery of an overpayment (TC846)

Use the online form if the Tax Credit Office has paid you too much tax credits and you think you shouldn't have to pay it back.



Tell HM Revenue and Customs (HMRC) if you’ve received too much tax credits and don’t think you should have to pay it back because you met your responsibilities and they didn’t meet theirs. You can either:

  • use the online form service (sign in to, or set up a Government Gateway account)
  • fill in form on-screen, print it off and post it to HMRC

If you use the online form, you’ll get a reference number that you can use to track the progress of your form.

You must be able to show that the Tax Credit Office made a mistake, or gave you incorrect advice, and it was reasonable for you to think your payments were right.

Read Tax credits: appeals and complaints before filling in the form to make sure you can dispute your tax credit overpayment.

You’ll need the following information to fill in the form:

  • why you’re disputing the overpayment
  • your National Insurance number (you can find this on your payslip, P60 or tax return)
  • your partner’s National Insurance number, if the overpayment was made on a joint claim
  • details of when you contacted us and what happened if you let us know:

    • your personal circumstances on your award notice were wrong or incomplete
    • your payments didn’t match your award notice

Phone the Tax Credit Payment Helpline if you need more time to pay a Tax Credit overpayment.

Before you start

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You’ll need to fill in the form fully before you can print it. You can’t save a partly completed form so we suggest you gather all your information together before you begin to fill it in.

Tax credits overpayments
How overpayments of tax credits can happen, repaying overpayments and disputes.

Tax credits: what happens if you’ve been paid too much (COP26)
This leaflet explains why overpayments happen and how to pay them back. It also tells you when you don’t have to pay them back and how to dispute an overpayment.