Guide · Mortgages & Property
Second Home Stamp Duty: The 5% Surcharge Explained
Whether it's a holiday cottage, a buy-to-let, or a flat for a child at university, buying a residential property you already own one elsewhere means an extra slice of stamp duty on top of the standard bands — and the rules for who counts as a second-home buyer trip up more people than you'd expect.
The surcharge rates
The surcharge is added to every standard rate band, including the nil-rate band — so a second-home buyer pays tax from the very first pound of the purchase price.
| Nation | Tax | Surcharge |
|---|---|---|
| England & N. Ireland | SDLT | +5% |
| Scotland | LBTT (Additional Dwellings Supplement) | +6% |
| Wales | LTT (higher rates) | +4% |
England's surcharge rose from 3% to 5% in October 2024 — the third increase since the surcharge was introduced in 2016 at 3%.
Worked example: a £300,000 second home in England
| Buyer type | Standard SDLT | Surcharge | Total SDLT |
|---|---|---|---|
| Standard home-mover | £5,000 | £0 | £5,000 |
| Second home / buy-to-let | £5,000 | £15,000 | £20,000 |
The surcharge alone — £15,000 — is three times the standard tax bill on this property. It is payable in full at completion; there is no instalment option.
What counts as a "second home" for stamp duty
The surcharge applies whenever, at the end of the day of completion, you own two or more residential properties anywhere in the world and you are not replacing your only or main residence. It catches more situations than the name suggests:
- A holiday home or weekend cottage, even if you never let it out.
- A buy-to-let property bought for rental income.
- A flat bought for a child, even if their name alone is on the mortgage but you're a co-owner or guarantor with a beneficial interest.
- Inheriting a share in a property and then buying your own home — the inherited share can count as an existing property in some cases.
- A property bought overseas that you already own when purchasing a UK residential property.
Married couples and civil partners are assessed as a single unit — if either of you owns a residential property, a purchase by the other usually still triggers the surcharge, even if you buy in just one name.
Replacing your main home: pay now, reclaim later
If you're buying a new main residence before you've sold your current one — a common situation in a slow market or a chain — you still pay the surcharge on completion. But it isn't necessarily a permanent cost: if you sell your previous main residence within 36 months of completing the new purchase, you can apply to HMRC for a full refund of the surcharge.
The refund claim must be made within 12 months of selling the old home, or within 12 months of the SDLT filing deadline for the new purchase if that falls later. Keep both completion statements — you'll need the dates and prices for both transactions.
Multiple Dwellings Relief no longer helps
Until June 2024, buyers purchasing two or more dwellings in a single transaction (for example, a house with an annexe, or a small portfolio of flats) could use Multiple Dwellings Relief to average the tax rate across the combined price, often substantially reducing the bill. MDR was abolished for transactions completing on or after 1 June 2024, so most second-home and small portfolio purchases now pay the surcharge in full with no averaging relief.
Combining with the non-UK resident surcharge
Non-UK resident buyers face an additional 2% surcharge in England and Northern Ireland, which stacks on top of the second-home surcharge. A non-resident buying a £300,000 second home in England would pay the standard rate, plus 5%, plus 2% — 7 percentage points of surcharge on top of the standard SDLT bands.
Frequently asked questions
What is the current second home stamp duty surcharge?
In England and Northern Ireland it's 5% on top of standard SDLT rates, raised from 3% in October 2024. Scotland's Additional Dwellings Supplement (ADS) is 6%, and Wales's Land Transaction Tax higher rates surcharge is 4%. All three apply to the whole purchase price, not just the amount above the nil-rate threshold.
Do I pay the surcharge if it's my only home in the UK?
Yes, if you already own a residential property anywhere in the world — including overseas — and you're not replacing your only or main residence. A UK buyer who keeps a holiday flat in Spain and buys a UK home to live in will still pay the surcharge on the UK purchase, because they own residential property elsewhere.
Can married couples and civil partners each buy a 'first' second home?
No. HMRC treats spouses and civil partners living together as a single unit for the surcharge test, regardless of whose name is on the deeds or whose money is used. If either of you owns a residential property anywhere, a new purchase by the other will normally still trigger the surcharge.
What if I sell my old main home shortly after buying the new one?
You pay the surcharge upfront, but can reclaim it from HMRC if you sell your previous main residence within 36 months of completing the new purchase. The reclaim must be submitted within 12 months of the sale (or the SDLT return deadline for the new purchase, if that is later) using HMRC's online refund service.