Tax credits ended on 5 April 2025, but millions of people across the UK are still dealing with the fallout. If you have received a letter saying you owe money back, you are not alone. This guide walks you through what a tax credit overpayment means, how recovery works now that tax credits have closed, and exactly what steps you can take to challenge, reduce, or repay the debt.
Key Takeaways
Tax credits stopped on 5 April 2025, but tax credit overpayments and tax credit debts are still being actively collected by HMRC, DWP, and DfC. These are now treated as legacy debts, and ignoring them will not make them disappear.
A tax credit overpayment happens when you were paid more tax credits than you were entitled to for a tax year. HMRC can usually recover the full amount regardless of what caused the overpayment, whether it was your mistake, a misunderstanding, or an official error by HMRC themselves.
If you believe HMRC calculated the right amount incorrectly, you can request a mandatory reconsideration within 30 days and, if needed, appeal to an independent tribunal. Strict time limits apply, so immediate action is advised if you suspect an error.
There are several ways to repay a tax credit debt, including direct debit, bank transfer, payments through your bank or building society, and deductions arranged through DWP or DfC if you receive universal credit.
Old tax credit debts can still be recovered many years later. If you receive a letter from HMRC, DWP, or a debt collection agency, do not ignore it. Contact HMRC or seek advice from a debt charity as quickly as possible.
What Is a Tax Credit Overpayment?
A tax credit overpayment is money owed back to HM Revenue and Customs when the Working Tax Credit or Child Tax Credit paid to you was more than your final entitlement for that tax year. Overpayments occur when more tax credits are paid than entitled based on your actual income and circumstances. This applies to any awards made between 2003 and 5 April 2025.
Tax credits ended on 5 April 2025 and are now legacy debts. From 6 April 2025, there are no new tax credit awards or payments. However, existing overpaid tax credits and debts remain fully collectible.
A credit overpayment can arise from several causes:
Changes in circumstances (income going up, moving in with a partner, children leaving education) not reported on time
Errors in your tax credit claim
Official mistakes by HMRC itself
HMRC or claimant errors can cause tax credit overpayment demands. Even where the mistake was entirely on HMRC's side, they are legally allowed to pursue recovery, though you may be able to dispute whether they should actually collect in your case.
A tax credit overpayment affects the overall debt to HMRC but not your tax liability, because tax credits are administered separately from Income Tax. The tax credit system relied on annual income estimates, so how much tax credits you were truly owed could only be confirmed after the tax year ended. Annualised taxation calculations led to overpayments being discovered later, which is why they were so common. Historically, roughly one in three finalised claims resulted in an overpayment.
How Tax Credits Overpayments Occur
Tax credits were paid provisionally during the year, based on estimated income and household details. After the end of each tax year, HMRC compared your actual income and circumstances with those estimates. This reconciliation process often created overpayments or underpayments.
Common causes include:
Income changes mid-year, such as a pay rise, second job, or a partner starting work, that pushed earnings above thresholds
Failure to report changes in circumstances, for example starting a joint claim, stopping work, or a child leaving full-time education
HMRC adjusting the current year's award too late after a reported change, because processing took weeks
Provisional payments based on outdated income information carrying over from a previous year
HMRC's system not anticipating income variations during the year
Claimants often delay reporting changes in circumstances to HMRC, sometimes without realising they needed to. But even people who phoned the tax credits helpline promptly could end up overpaid if HMRC's processing was slow.
Overpayments can lead to financial penalties if fraud is involved, but tax credit overpayments are not the same as fraud. Many people have a tax credit debt because of system design, complex rules, and honest misunderstandings rather than deliberate wrongdoing.
If you were receiving tax credits for any period from 2019/20 to 2024/25, check your award notices and end-of-year statements carefully. They show when and how the overpayment built up.
Understanding and Checking Your Tax Credits Overpayment
HMRC usually sends a letter to notify about any overpayment. This notice should show the tax years involved, the amount owed for each year, and a payment reference. If you have not received a clear breakdown, you can contact HMRC and ask for one.
When checking your overpayment, you should:
Ask the tax credit office for the income figures they used, the date they believe changes happened, and whether any overpayments have already been partially repaid
Compare their figures against your own records: P60s, payslips, self-assessment returns, universal credit statements, and letters confirming changes
Keep a written log of all contact with HMRC, noting dates, times, names of staff, and which department or office handled your call
Note that if the overpayment has been passed to DWP or DfC, HMRC remain the correct department to contact if you want to challenge how it arose or whether the amount is correct
Getting the details right at this stage saves significant time later if you need to dispute the figures.
Challenging a Tax Credit Overpayment Decision
There are two main routes to challenge a tax credits overpayment:
Appeal route – you believe HMRC's decision or figures are wrong, so you request a mandatory reconsideration and potentially go to tribunal
Dispute/waiver route – you accept that an overpayment happened but argue HMRC should not recover because they made mistakes or your circumstances were exceptional
Choose the appeal route if you think you were paid the right amount and HMRC have miscalculated. Use the dispute route where you accept an overpayment exists but believe recovery is unfair.
The time limit for a mandatory reconsideration is 30 days. For disputes about recovery, you normally have three months. HMRC may not suspend recovery while considering your dispute, so continue responding to payment letters and ask for affordable instalments while any challenge is ongoing.
Before challenging, gather evidence: copies of letters you sent, notes of phone calls, medical evidence if illness affected your ability to comply, and any proof of financial hardship.
Mandatory Reconsideration and Appeal
If you disagree with a tax credit decision, for example a final award notice showing an overpayment for 2024/25, request a mandatory reconsideration within 30 days of the date on that notice. The request should be made in writing, ideally using HMRC form WTC/AP, and must clearly set out which decision you are challenging, why you think it is wrong, and what the correct amount should be.
HMRC aim to deal with mandatory reconsiderations within about 42 days, though it can take a longer period if they request more information.
If you miss the 30-day window, you can sometimes file a late request up to 13 months after the original decision, but only where you can explain special circumstances such as serious illness, bereavement, or postal problems.
If you are unhappy with the mandatory reconsideration outcome, you can appeal to the First-tier Tribunal (Social Entitlement Chamber) using form SSCS5, normally within one month of the reconsideration notice. The tribunal reaches a final decision independently of HMRC. Successful disputes lead to refunds of repaid amounts if the tribunal finds the overpayment should not have existed.
Disputing Recovery Due to HMRC Error or Exceptional Circumstances
If you accept that an overpayment happened but believe HMRC should not recover because they made an official error, use form TC846 to dispute. You have three months to dispute an overpayment decision using this route.
Your dispute should explain how HMRC failed to act correctly. For example:
They lost documents you sent
They did not act on information you reported
They sent conflicting award notices that led you to believe you were being paid the correct amount
You can also dispute recovery if serious illness, disability, domestic abuse, or other major life events prevented you from meeting reporting obligations. Include medical or supporting evidence with your submission.
HMRC will review the full claim history under Code of Practice 26 and may write off part or all of the tax credit debt if recovery would be unfair. If the dispute is unsuccessful, you can still make a formal complaint, or ask for a payment plan or partial write-off on hardship grounds.
Paying Back Tax Credit Debts
Since tax credits ended on 5 April 2025, tax credits cannot be deducted from ongoing payments after they cease. HMRC no longer recover by adjusting a new claim for tax credits. Instead, they collect existing debts directly or transfer them to DWP or DfC.
Ways HMRC may ask you to repay include:
Method | Details |
|---|---|
Lump-sum payment | Usually requested within 30 or 42 days |
Repayment plan | Instalments over 12 months or a longer period |
Benefit deductions | Via DWP/DfC from universal credit or other benefits |
Direct earnings attachment | Deductions from wages without a court order |
Debt collection agency | Referral to private collectors if you do not respond |
Court action | Recovery actions can include court proceedings for unpaid debts |
You can repay tax credit overpayments over 12 months or longer depending on your circumstances. If you cannot afford what is being asked, contact HMRC or DWP Debt Management immediately to negotiate an amount that leaves enough for essential living costs. Ignoring letters can lead to stronger action. HMRC may pass debts to private debt collection agencies, though these agencies cannot enter your home or seize goods without a court order.
Prepare a realistic budget before phoning so you can show what you can afford each month.
Paying HMRC Directly (Phone, Direct Debit, Bank and Post)
If your tax credit overpayment is still with HMRC, you can pay HMRC directly through several methods:
Card payment via the automated phone line
Direct debit using the 16-character reference from your notice to pay letter (takes up to 5 working days to activate; shows on your account as "NDDS")
Bank transfer (Faster Payments, CHAPS, or Bacs) quoting your 16-character reference exactly
Cash or cheque at your bank or building society branch using a paying-in slip
Cheque by post to HM Revenue and Customs, HMRC Direct, BX5 5BD, United Kingdom
Payments can be made via direct debit or bank transfer in the same way as other methods available through your bank. When posting a cheque, make it payable to "HM Revenue and Customs only", write your reference on the back, and allow enough time before any deadline. Do not fold the cheque.
Collection Through DWP or DfC (Including Universal Credit)
If you now claim universal credit or certain other benefits, debts can be transferred to DWP for recovery from universal credit. In Northern Ireland, the equivalent is DfC. DWP can contact you for tax credit overpayment recovery once the transfer is complete.
HMRC usually send a TC1131 letter before the transfer, confirming the amount and which tax years it covers. Once transferred, the overpayment is recovered in the same way as a benefit overpayment, through deductions from your payments or a direct earnings attachment if you are working.
Any existing repayment plan or direct debit with HMRC will normally stop recovery automatically when the debt moves. However, you must cancel any standing orders you set up yourself through your bank or building society.
After transfer, speak to DWP or DfC about repayment rates and pauses. HMRC remain responsible for dealing with challenges to how the overpayment arose.
Joint Claims and Responsibility for Tax Credit Debts
Where you had a joint claim for tax credits, both partners are jointly and severally liable. This means HMRC can legally recover the whole debt from either person, not just half.
In practice, HMRC often start by asking each person to pay 50% of the overpayment. They can adjust this split if one partner is clearly more responsible or has higher income. If the debt is transferred to universal credit, DWP usually splits it 50/50 between each ex-partner's claim unless there is evidence justifying a different division.
If you believe the split is unfair, for example where one person controlled the finances or committed fraud, write to HMRC explaining why your share should be reduced and provide supporting evidence. Include any relevant details about your address, the circumstances of the relationship, and who managed contact with HMRC.
Separating, divorcing, or moving out does not remove liability for joint claim debts. Both people may still be chased even years after the relationship ends.
Old Tax Credits Overpayments, Time Limits and Write-Off
Tax credit debts can date back many years. People are often surprised to receive letters about overpayments from the early 2000s that they had forgotten about.
The Limitation Act 1980 may affect court action for debts in England and Wales after six years of no acknowledgement or payment. However, HMRC can still pursue recovery by deductions from benefits or wages without going to court, so a debt being potentially statute-barred does not always mean it has gone away. The rules in Scotland and Northern Ireland differ, so anyone in this situation should get independent legal or debt advice before responding.
In cases of severe financial hardship, long-term ill-health, or mental health problems, HMRC may agree to suspend recovery for 12 months due to hardship. In rare cases, they may permanently write off part or all of the overpayment. You can request a write-off of the debt in cases of hardship by contacting HMRC's Tax Credit Payment Helpline with a detailed budget and medical evidence where relevant.
You should explicitly ask for consideration of suspension or stop recovery if your money situation makes repayment genuinely impossible.
Complaints, Breathing Space and Where to Get Help
If you are unhappy with how HMRC have handled your tax credits overpayment, you can use their formal complaints procedure. The escalation route is:
Complaint to HMRC
Referral to the Adjudicator's Office if unresolved
Via your MP to the Parliamentary and Health Service Ombudsman
These bodies examine fairness and service quality rather than changing tax law.
In England and Wales, the statutory Breathing Space scheme can give around 60 days of protection from most enforcement and additional charges on qualifying debts, including many tax credit debts, while you get regulated debt advice.
Free, independent support is available from Citizens Advice, specialist welfare rights organisations, and other advice services. If you feel overwhelmed, seek help before making decisions like ignoring demands or offering lump-sum settlements. A debt charity can help you understand your options and deal with HMRC or DWP on your behalf.
Rules and contact details can change, so always check the latest guidance on GOV.UK for tax credit overpayments, universal credit overpayment recovery, and pensions and benefits support.
Frequently Asked Questions
Will a tax credit overpayment affect my credit rating?
HMRC and DWP do not normally register tax credits overpayments directly with credit reference agencies, so a tax credit debt alone does not appear on your credit file. However, your credit rating could be affected indirectly if recovery escalates to a County Court judgment or other enforcement recorded by credit reference agencies. Responding to letters early, arranging an affordable repayment plan, and sticking to it is the best way to avoid court action and protect your credit record.
Can HMRC take tax credit debts from my wages without going to court?
HMRC can recover overpayments through direct earnings attachments, particularly once the debt is transferred to DWP. DWP can usually set up a DEA without a court order if you are employed. Your employer will receive a formal notice setting out how much to deduct from your wages each period and send the money to DWP until the overpayment is cleared. If the deduction is too high, contact DWP Debt Management promptly with an income and expenditure breakdown to request a lower rate.
What happens to my tax credit overpayment if I move abroad?
Moving overseas does not automatically cancel a tax credit debt. HMRC can still pursue the overpayment and may ask you to pay by international bank transfer in sterling. While enforcing UK debts abroad is more difficult, do not assume the debt has disappeared. Keep HMRC updated with a forwarding address and email contact. If you cannot afford repayments, seek cross-border debt advice and discuss realistic options with HMRC.
Can I include tax credit debts in insolvency solutions like bankruptcy?
Most tax credit overpayments are treated as qualifying unsecured debts in formal insolvency solutions such as bankruptcy, Debt Relief Orders, and Individual Voluntary Arrangements in England and Wales. If the overpayment is included, recovery action should normally stop and the remaining balance may be written off at the end of the process. Speak to an approved debt adviser or insolvency practitioner before choosing any formal option, as these have serious long-term consequences for your credit record and account holdings.
Do I still need to repay if HMRC made all the mistakes?
In law, HMRC generally retains the right to recover overpayments even where they were caused by official error. However, their own policy under Code of Practice 26 allows them to waive recovery where it would be unfair. Use the dispute process, provide full details of the errors, and explain why you could reasonably think you were being paid the correct amount. Even if HMRC refuse to write off the whole debt, they may reduce the amount or accept very low instalments based on your circumstances. Engaging with them, rather than ignoring the problem, always gives you the best chance of a fair outcome. If you receive more tax credits than you should have because of pension credit changes or other benefit interactions, the same principles apply.
