Helping UK Homeowners Reclaim Overpaid Stamp Duty
StampDutyBack provides free tools to identify potential SDLT overpayments, and a £19.99 claim pack so homeowners can reclaim what they're owed themselves.
Why StampDutyBack Exists
Stamp duty is among the most complex personal taxes in the UK system. Case law is still being decided on what counts as residential property, what counts as a self-contained dwelling, and when surcharges apply. Honest mistakes happen at completion — often through misclassified property types, overlooked reliefs, or errors made during conveyancing.
Recovering an overpayment has historically meant either paying a claims firm a large slice of the refund or navigating a complex HMRC amendment process alone. Most homeowners simply don't know they can claim, or don't know where to start.
StampDutyBack was built to change that. We provide free calculators, guides, and tools so any homeowner can quickly understand whether they may have overpaid — and a clear, simple path to do something about it.
How StampDutyBack Works
Check Your Eligibility
Use our free Refund Estimator to get an instant estimate of whether you may have overpaid, based on your purchase price, property type, and circumstances.
Get the DIY Claim Pack
For £19.99 you get the decision tree, chattel schedule, valuation guide, and letter template you need to submit the HMRC amendment yourself — the same price whatever your refund is worth.
File It and Keep All of It
You send the claim to HMRC yourself, so no one takes a percentage of the refund. HMRC typically processes SDLT refund claims within 15–20 working days, though complex cases can take longer. You have up to 4 years from the date of purchase to make a claim.
Who We Help
StampDutyBack is designed for homeowners who have purchased property in England or Northern Ireland within the last 4 years — the window in which you can make an overpayment relief claim, up to 4 years from the effective date of the transaction (Sch 10 FA 2003). Common situations we help with include:
How We Make Money
One way only: the DIY Claim Pack, a £19.99 downloadable document. We don't take a percentage of any refund, we don't run an enquiry form, and we don't introduce you to a claims firm, tax adviser, or solicitor — which means nobody pays us a referral fee for your details, because we don't pass them on.
Everything else on the site — the refund checker, the calculators, the guides — is free and stays free. Because the pack costs the same £19.99 whether your refund turns out to be £600 or £40,000, we have no reason to talk up a weak position, and no reason to hide a negative result. If the checker says you likely don't qualify, that is the whole answer and we sell you nothing.
No-win-no-fee claims firms are a real alternative if you would rather not handle the paperwork yourself. They typically keep 25–40% of the refund. We have no arrangement with any of them and take no payment from them.
Important Information
StampDutyBack is an online information provider and the publisher of the DIY Claim Pack. We are not a law firm, tax adviser, or regulated financial services provider, and we do not file claims or act for you. The tools and calculators on this site are provided for informational purposes only and do not constitute tax or legal advice. Eligibility for a stamp duty refund depends on the specific facts of each transaction. If your case is complex or the amount is significant, consider taking advice from a qualified adviser of your own choosing before submitting any claim to HMRC. Stamp duty rules apply to England and Northern Ireland only; different rules apply in Scotland (LBTT) and Wales (LTT).
Think You've Overpaid?
Get a free estimate in 60 seconds, then choose how to proceed.
Last reviewed: 24 May 2026. Sources cited inline.