Am I due a refund? Find out in 30 seconds.
Am I due a refund is a question millions of UK workers should be asking. HMRC, energy suppliers, councils, and banks owe money to millions of people who never claim it. We’ve built 15 free refund calculators so you can check what you’re owed in seconds — then claim direct and keep 100%.
£1,260
Marriage Allowance — backdated 4 years
£1,000s
Pension tax relief if you’re a higher-rate earner
£520
Per passenger for delayed flights under UK261
↓ Pick a calculator below to see what you’re owed
Free refund calculators
Marriage Allowance Refund
Up to £1,260Married or in a civil partnership and one of you earns under £12,570? You could claim back up to 5 years of tax.
Check eligibilityUniform Tax Rebate
Up to £140 a yearWash your own work uniform? Nurses, mechanics, hospitality and trade workers can claim — backdated 4 years.
Check eligibilityWorking From Home Tax Refund
Up to £624 — deadline approachingThe relief was scrapped in April 2026 but you can still backdate up to 4 tax years. Don’t miss the cut-off.
Check eligibilityCouncil Tax Band Check
Up to £5,000+ refundAround 400,000 UK homes are in the wrong council tax band. Refunds backdate to 1993 — sometimes worth thousands.
Check eligibilityMileage Allowance Refund
Up to 45p per mileIf your employer pays less than the HMRC rate for business miles, you can claim the difference. Backdate 4 years.
Check eligibility →PPI Tax Reclaim
Reclaim 20% tax on PPI interestBanks deducted 20% tax from the statutory interest on every PPI payout — even from non-taxpayers. Backdate 4 years.
Check eligibilityPension Tax Relief
£1,000s if higher-rateHigher-rate (40%) and additional-rate (45%) pension contributors miss extra tax relief HMRC doesn’t add automatically. Backdated 4 years.
Check eligibilityStudent Loan Overpayment
Reclaim the full yearIf your total annual income was under your plan’s threshold but PAYE took deductions anyway, you can claim it all back from the SLC.
Check eligibilityJob Expenses (P87)
Tax back on work spendingTools, professional fees, union subs, travel to temporary workplaces — claim tax relief on everything you bought for work that wasn’t reimbursed.
Check eligibilityEnergy Bill Refund
£100s in supplier creditSuppliers hold £3bn in customer credit. If you’ve built up a big balance or switched suppliers, you can reclaim the excess under Ofgem rules.
Check eligibilityFlight Delay Compensation
Up to £520 per passengerIf your flight was delayed 3+ hours or cancelled with under 14 days notice, UK261 entitles you to cash compensation. Backdate 6 years.
Check eligibilityNational Insurance Refund
£1,000s if multi-jobMultiple jobs, paid past State Pension age, or wrong NI category? Combined earnings tip you over the limit and HMRC owes you back. Backdate 6 years.
Check eligibilityPackaged Bank Account Refund
£1,000s + 8% interestPaid for an account with travel insurance or breakdown cover you couldn’t use? FOS regularly upholds these claims. Reclaim every monthly fee plus interest.
Check eligibilityStatutory Sick Pay Underpayment
£100s in unpaid sick paySSP rules changed dramatically in April 2026 — day-one entitlement, no minimum earnings. If your employer didn’t apply the new rules properly, you’re owed back-pay.
Check eligibilityTrain Delay Compensation
100% of your fare backDelayed 30+ minutes? Most operators pay 50% of your fare for delays of 30 minutes, and 100% for 60+. Claim within 28 days under Delay Repay 15 or 30.
Check eligibilityHow this site works
No middleman. We’re not a refund company. We don’t ask for your bank details. Our calculators send you straight to GOV.UK to claim free.
No 30% cut. Refund firms charge 30%+ in fees. On a £1,260 marriage allowance claim, that’s nearly £400 lost. Claiming directly takes 10 minutes.
No catch. We make our money from ads and affiliate links to other helpful services — never from your refund.
More calculators coming soon — including ISA tax, savings interest, and capital gains refunds.