How to claim a universal credit tax refund is a question that affects many PAYE workers across the UK every year.
If you have been employed whilst receiving universal credit, there is a reasonable possibility your tax code has not always accurately reflected your circumstances. This can mean more income tax was deducted than you actually owed.
Knowing how to claim a universal credit tax refund – and which route suits your situation – can make the difference between recovering that money and leaving it with HMRC indefinitely.
This article covers:
- The different ways you may be able to reclaim overpaid tax
- What records and information you are likely to need
- How the process unfolds depending on whether HMRC contacts you first
- What to be aware of regarding timing and deadlines
Whether you are still claiming universal credit or did so in a previous tax year, understanding how to claim a universal credit tax refund starts with knowing what to look for.
How to Claim a Universal Credit Tax Refund: Starting With Your Records
Before attempting to claim, it helps to build a clear picture of your tax position for the year or years in question.
Documents you are likely to need:
- P60 – shows total income received and tax deducted across a full tax year from a single employer. If you had more than one employer in the same year, you may have a P60 from each.
- Payslips – provide a month-by-month breakdown of the tax code your employer was operating and the amount of tax deducted each pay period.
- P45 – if you changed jobs during the year, your P45 from the previous employer records the income and tax deducted up to your leaving date.
If you notice an emergency tax code on your payslips – one ending in W1, M1, or X – this is often a sign too much tax was taken during that period.
Emergency codes treat each pay period in isolation. They do not account for unused personal allowance accumulated earlier in the year, which can result in a significant overpayment.
Where a P45 was not passed on to a new employer in time, an incorrect code may have been applied from the start of a new role. This is one of the more straightforward overpayment scenarios to identify.
The P800 Route: When HMRC Contacts You First
HMRC carries out an annual reconciliation of PAYE records after each tax year ends.
When this process identifies that you have paid more tax than was due, HMRC may issue a P800 tax calculation.
This document arrives by post and sets out:
- Your income for the year as HMRC recorded it
- The total tax deducted through PAYE
- The refund amount HMRC calculates you are owed
- Whether you can claim online or will receive a cheque
Receiving a P800 is the most straightforward starting point, as HMRC has already done the initial calculation for you.
Claiming online after a P800:
If your P800 indicates you can claim online, you will be directed to the Government Gateway. The online route tends to result in payment within approximately five working days.
To complete the online claim you will need:
- Your Government Gateway login details
- The reference number from your P800 letter
- Your National Insurance number
- Online banking set up to receive the payment
If you do not claim online within 45 days of the P800 being issued, HMRC may send a cheque to the address they hold on record.
If that address is out of date, updating it through your personal tax account beforehand can prevent delays.
How to Claim a Universal Credit Tax Refund Without a P800
Not every overpayment results in a P800. HMRC’s reconciliation process depends on accurate and complete data from employers.
Where records have not been submitted correctly or on time, an overpayment can go undetected. In these situations, you may need to initiate the claim yourself.
Your main options are:
- Contact HMRC by telephone – have your National Insurance number, employer details, relevant tax year, and figures from your P60 or payslips ready.
- Use your personal tax account on the Government Gateway – view the tax codes HMRC holds, check your income tax estimates, and in some cases raise a repayment request directly.
- Write to HMRC’s Pay As You Earn team – useful if you prefer to submit supporting documents and maintain a paper record of your request.
If your account shows a discrepancy between the tax recorded as paid and the liability HMRC calculates you owe, this can form the basis for a refund request.
HMRC’s online services have expanded in recent years. Many queries that previously required a phone call can now be resolved through the personal tax account, which tends to be faster and provides a written record of any actions taken.
Using a P87 to Increase a Universal Credit Tax Refund Amount
When thinking about how to claim a universal credit tax refund, it is worth checking whether unreimbursed work-related expenses could increase the total amount you recover.
The P87 form allows employed taxpayers to claim tax relief on qualifying expenses their employer has not reimbursed.
Expenses that may qualify include:
- Maintaining a uniform or protective clothing required by your employer
- Tools and equipment purchased for use in your role
- Travel to temporary workplaces (not your regular place of work)
- Use of your own vehicle for business travel not reimbursed at the HMRC approved mileage rate
- Professional subscriptions or fees required for your job
A successful P87 claim reduces your taxable income for the relevant year. This can increase the overpayment figure and the refund you may receive.
Claims can be backdated for up to four tax years. The P87 can be submitted by post to HMRC’s Pay As You Earn team or you can claim online through your personal tax account service.
Submitting a P87 at the same time as your main refund request means HMRC can potentially process both adjustments together.
Time Limits for Claiming a Universal Credit Tax Refund
HMRC applies a four-year time limit to claims for overpaid income tax. It is important to understand exactly how this is calculated.
How the four-year limit works:
- The clock runs from the end of the tax year in which the overpayment occurred – not from the date you left a job or stopped claiming universal credit.
- For the 2025/26 tax year, overpayments from the 2021/22 tax year (which ended 5 April 2022) may still be reclaimable – but only until 5 April 2026.
- Once the deadline passes, the overpayment is generally not recoverable under standard HMRC procedures.
A common misunderstanding is that the clock starts when you last received a payslip or left a job. The tax year end date is what matters.
Example: If you worked for part of the 2021/22 tax year and have since moved between jobs or periods of universal credit, that overpayment may still be within the claimable window – but time may be running short.
An extra-statutory concession exists for cases where the overpayment arose directly from HMRC’s own error. This applies in limited circumstances only and is not a reliable route for most claimants.
Reporting a Universal Credit Tax Refund to the DWP
A step that is easy to overlook is the requirement to report receipt of a tax refund to the Department for Work and Pensions (DWP).
HMRC and DWP operate separately. Receiving a refund from HMRC does not mean DWP is automatically informed. The obligation to report it rests with you as the claimant.
Why reporting matters:
- A tax refund received within a universal credit assessment period may be treated as income for that period.
- This could temporarily reduce the universal credit payment you receive in the month the refund arrives.
- The reduction is calculated using the taper rate – for every pound of income above your work allowance, your award may be reduced by a set proportion.
- Failing to report could result in a universal credit overpayment that DWP may later seek to recover.
How to report:
Log into your online universal credit account and record the date and amount of the refund as a change in circumstances. Do this as soon as reasonably practicable after receiving payment.
Keeping a record of when you reported, and what you reported, can be helpful if any query arises later.
How to Claim a Universal Credit Tax Refund: Common Errors to Avoid
Even when you know broadly what to do, certain mistakes can slow the process or reduce the amount you recover.
Errors that commonly arise:
- Assuming HMRC will catch every overpayment automatically. The annual reconciliation misses a significant number of cases. If you have not received a P800 and believe you have overpaid, contacting HMRC directly is the more reliable approach.
- Applying the wrong time limit. The four-year limit runs from the end of the relevant tax year, not from when you left a job. Missing this deadline means losing the claim entirely.
- Not checking for expense relief. A P87 claim could increase your total refund. Review your work-related expenses for the same years at the same time as your main claim.
- Not reporting the refund to DWP. Failing to update your universal credit journal could result in a separate overpayment being raised by DWP.
- Waiting too long after a P800 arrives. If you do not act within 45 days, HMRC may send a cheque to an address they hold on record, which may no longer be current.
What Knowing How to Claim a Universal Credit Tax Refund Means in Practice
Understanding how to claim a universal credit tax refund involves more than knowing where to submit a form.
It requires a working knowledge of your own records, the routes available to you, the time limits that apply, and the separate obligation to keep DWP informed when a refund is received.
HMRC’s reconciliation process may prompt the claim for you via a P800 – but in many cases a more proactive approach is needed.
Reviewing your P60s, checking your personal tax account, and contacting HMRC directly are all steps worth taking.
For broader information on how income tax refunds are calculated and what situations give rise to them, our income tax rebates page covers the underlying mechanics in detail.
Key Takeaways
- Your P60, P45, and payslips are the starting documents for establishing whether you may have overpaid tax and have grounds to claim a universal credit tax refund.
- HMRC may issue a P800 after the tax year ends. Acting within 45 days typically allows you to claim online rather than waiting for a cheque.
- Where no P800 is received, contact HMRC directly or use your personal tax account to request a review and initiate a refund.
- A P87 employment expense claim may increase the total amount recoverable and can be submitted at the same time as your main refund request.
- The four-year time limit runs from the end of the relevant tax year – not from the date you left a job or stopped claiming universal credit.
- Any tax refund received during a universal credit assessment period should be reported to DWP via your journal to avoid a potential overpayment.
Universal Credit Tax Refund Claims FAQs
Q: How do I claim a universal credit tax refund from HMRC?
A: If HMRC identifies an overpayment through its annual reconciliation, it may send you a P800 tax calculation with instructions on how to claim online or by cheque. If no P800 arrives and you believe you have overpaid, contact HMRC by telephone or through your personal tax account on the Government Gateway.
Q: How long does a universal credit tax refund take?
A: Online claims made through the Government Gateway following a P800 are typically processed within approximately five working days. Claims by telephone or post may take several weeks depending on HMRC workload and the complexity of your case.
Q: Do I need to tell DWP if I receive a tax refund whilst on universal credit?
A: Yes. You are required to report a tax refund to DWP as a change in circumstances via your online universal credit journal. HMRC and DWP do not automatically share this information. Failing to report it could result in a universal credit overpayment that DWP may seek to recover later.
Q: How far back can I claim a universal credit tax refund?
A: HMRC generally allows overpaid income tax to be reclaimed for up to four tax years prior to the current one. The time limit runs from the end of the relevant tax year. For 2025/26, claims may potentially be made back to the 2021/22 tax year.
Q: Can I increase a universal credit tax refund by claiming expenses?
A: Potentially, yes. If you incurred work-related expenses your employer did not reimburse, you may be eligible to claim tax relief via a P87 form. A successful claim reduces your taxable income for the relevant year, which can increase the overpayment figure and the refund you may receive.
