Tax Credit Overpayment Calculator 2026
Calculate how HMRC recovers tax credit overpayments. Understand recovery rates (10–100% of awards), dispute rights, time limits, and whether your overpayment was an official error.
Tax Credit Overpayment Recovery Calculator
HMRC can recover tax credit overpayments by reducing your ongoing payments. The recovery rate depends on your household income and circumstances.
Frequently Asked Questions
What is a tax credit overpayment?
A tax credit overpayment occurs when HMRC has paid you more tax credits than you were entitled to. This can happen due to a change in circumstances not reported, an income increase, or an error by HMRC.
How does HMRC recover tax credit overpayments?
HMRC recovers overpayments by reducing your ongoing tax credit payments. The recovery rate depends on your income: 10% for incomes up to £16,105, 25% for £16,105–£20,000, and 50% for higher incomes.
Can I dispute a tax credit overpayment?
Yes. You can dispute overpayments caused by official error using form TC846. You have 3 years from when you received the overpayment notice to challenge it. If HMRC made the error and you couldn't reasonably have known, recovery may be waived.
What happens to overpayments when I move to Universal Credit?
Old tax credit overpayments transfer to DWP/HMRC for collection when you migrate to Universal Credit. DWP can deduct up to £38.55/month from Universal Credit to recover the debt.
Is there a time limit on recovering tax credit overpayments?
HMRC normally has 4 years to recover overpayments from the end of the tax year in which the overpayment was made. After this, the debt may be statute-barred, though HMRC can still deduct from future benefits.
Can tax credit overpayments be written off?
Yes, in cases of genuine hardship or official error, overpayments can be fully or partially written off. Contact the Tax Credit Helpline (0345 300 3900) to discuss a write-off or affordable repayment arrangement.
What if I can't afford the repayments?
Contact HMRC to negotiate a lower recovery rate or payment plan. The minimum recovery rate can be reduced below 10% in genuine hardship cases. Debt advice charities like StepChange can also help negotiate with HMRC.
How does overpayment affect my tax credit renewal?
If you have an ongoing overpayment, it will show on your annual award notice. HMRC will automatically deduct it from your next year's award at the applicable recovery rate.