Real Estate · UK

Stamp Duty Surcharge Refund: Reclaiming After You Sell

If you bought a new home before selling your old one, you almost certainly paid the 5% additional-property surcharge on the purchase — and if you have since sold the old home, you can have all of it back. HMRC will not tell you, and it will not happen on its own.

Why you paid it in the first place

The surcharge applies when, at the end of the day you complete, you own more than one residential property. If your purchase completes before your sale — a chain that did not line up, a bridging loan, a house bought at auction — you briefly own two homes, and the surcharge is due on the new one even though you are plainly not building a portfolio.

Parliament anticipated this. The replacement of main residence rule refunds the surcharge in full once the old home is sold, provided the timing works.

The conditions

• The property you bought is or becomes your only or main residence.
• The property you sold was your only or main residence at some point in the three years before the new purchase.
• You sell the old home within three years of completing on the new one.
• You claim, within the window below.

Note what is not required. There is no test of why the sale was late, no minimum period of living in either property, and no requirement that the two are in the same part of the UK.

The deadline people miss

There are two separate clocks, and confusing them is the usual reason a valid refund is lost.

Clock	Length	Runs from
Time to sell the old home	3 years	Completion on the new purchase
Time to claim the refund	12 months	The later of the sale of the old home, or the filing date of the SDLT return on the purchase

How to claim

You can do it yourself on GOV.UK, or ask the conveyancer who handled the purchase. You will need the SDLT return's Unique Transaction Reference Number, both completion dates, the amount of surcharge paid, and the bank details for the refund.

HMRC typically processes these within around 15 working days. The claim is a factual one — two dates and a figure — and for a straightforward chain it does not require professional help.

If three years is not enough

HMRC will consider an extension, but the bar is exceptional circumstances that prevented the sale and were outside your control — the cladding and building-safety problems that left flats unsellable are the clearest example, as are certain public-authority actions. You must also sell as soon as you reasonably can once the obstacle lifts.

A slow market, a chain collapsing, or holding out for a better price will not qualify. Neither will simply having decided to keep the property for a while.

Scotland and Wales

Nation	Surcharge	Window to sell the old home
England & NI	5% SDLT	3 years
Scotland	8% ADS	18 months
Wales	Higher LTT rates	3 years

Scotland's window is half the English one and its surcharge is the highest of the three, so a Scottish buyer in a broken chain is the most exposed of anyone in the UK. If your old home is in Scotland, the 18-month date is the one to put in a calendar the week you complete.

Practical points

1. Diarise both dates on the day you complete — the three-year sale deadline and, once the sale happens, the twelve-month claim deadline.
2. Keep the SDLT return. The transaction reference is the one thing a claim cannot be made without, and it is easily lost in a house move.
3. Ask the conveyancer at the point of sale, not at the point of purchase. By the time the old house sells, the purchase file has usually been closed and nobody is watching for it.
4. If you completed more than a year ago and never claimed, check the dates anyway — the twelve months runs from the sale, not the purchase, so a recent sale on an old purchase is still live.

Related

• UK stamp duty surcharges — when the 5% and 2% surcharges apply and how they stack.
• Scotland's 8% ADS — including its shorter 18-month repayment window.
• Wales LTT higher rates — the equivalent for Welsh second homes.
• The cost of selling a house in the UK — what the other side of the chain costs.

Sources

• GOV.UK — Apply for a repayment of the higher rates of Stamp Duty Land Tax
• HMRC — SDLT Manual, replacement of main residence and the exceptional circumstances extension
• Revenue Scotland — Additional Dwelling Supplement repayment, 18-month rule
• Welsh Revenue Authority — Higher rates refunds for Land Transaction Tax

Position for 2026/27. Compiled from public sources and not individually verified by a regulated adviser. General information, not tax advice — check your own dates against HMRC guidance or with your conveyancer before claiming.

Frequently asked questions

Can I get the stamp duty surcharge back?
Yes, if you paid the 5% additional-property surcharge because you had not yet sold your previous main home, and you then sell it within three years of the new purchase. The surcharge is refunded in full. This is the replacement-of-main-residence rule and it is the most common stamp duty refund there is.

How long do I have to claim a stamp duty refund?
The later of 12 months from the sale of your previous home, or 12 months from the filing date of the SDLT return on the new purchase. The old home itself must be sold within three years of the new purchase. Missing the claim window is far more common than missing the three-year sale window.

Do I get a stamp duty refund automatically?
No. HMRC does not know you have sold the old property, so nothing happens unless you claim. You apply yourself through GOV.UK or ask your conveyancer to do it — you do not need to pay a percentage-based reclaim firm, and the claim is usually straightforward.

What if I cannot sell the old home within three years?
The surcharge normally stands. HMRC will consider an extension only where the delay was caused by exceptional circumstances outside your control that prevented the sale — and you must then sell as soon as you reasonably can. A slow market or holding out for a better price does not qualify.

Does the refund rule apply in Scotland and Wales?
Both have an equivalent, on different terms. Scotland refunds the 8% Additional Dwelling Supplement where the previous main residence is sold within 18 months, not three years. Wales refunds its higher LTT rates on a three-year rule closer to the English one. The shorter Scottish window is the one that catches people out.