Second Home Stamp Duty Surcharge Explained — England & NI 2026/27
How the 5% additional-property SDLT surcharge is calculated on top of standard stamp duty when buying a second home or investment property in 2026/27.
How the Surcharge Is Layered on Top
The additional-property SDLT surcharge in England and Northern Ireland adds 5 percentage points to the standard SDLT rate in every band, calculated on the full purchase price of the property. Standard SDLT bands are tax-free up to a threshold and then rise progressively, but the surcharge applies from the very first pound, meaning even the portion of the price that would be tax-free for a main residence purchase is taxed at the 5% surcharge rate when buying a second property.
Worked Illustration of the Layering
| Price band | Standard SDLT rate | Additional-property rate (standard + 5pp surcharge) |
|---|---|---|
| Up to £125,000 | 0% | 5% |
| £125,000–£250,000 | 2% | 7% |
| £250,000–£925,000 | 5% | 10% |
| £925,000–£1,500,000 | 10% | 15% |
| Above £1,500,000 | 12% | 17% |
This band-by-band structure means the surcharge is not simply 5% of the purchase price flat — it's 5 percentage points added within each band — but because the lowest band, which is normally tax-free, becomes taxed at 5% for a second property, the total extra cost ends up close to 5% of the full price for most purchases, and slightly more for higher-value properties crossing into higher bands.
The Main Residence Replacement Exception
A common misunderstanding is that anyone temporarily owning two properties automatically owes the surcharge. If you're buying a new main home before your previous main home has sold, you typically do pay the surcharge upfront on completion, but you can reclaim it in full if your previous main residence is sold within the required window, generally three years, after the new purchase completes. This exception exists specifically because completion dates on a sale and purchase don't always align, and it would be unreasonable to permanently charge someone the investment-property surcharge simply for replacing their own home.
Non-Resident Buyers Face a Further Layer
Buyers who don't meet UK residence tests at the time of purchase can be charged an additional 2% non-resident surcharge, which stacks on top of the additional-property surcharge where both apply — meaning a non-UK resident buying a second UK property could, in the highest band, be paying a combined rate significantly above the standard SDLT rate for that band. UK residence for this purpose is based on specific day-count tests around the purchase date, separate from general tax residence rules, so it's worth checking carefully rather than assuming.
Before You Complete on a Second Property
- Confirm whether the purchase counts as an additional property under HMRC's rules (this can include holiday homes, buy-to-lets and properties bought for family members)
- If replacing a main residence, check the reclaim window and process for the surcharge paid upfront
- Check whether a non-resident surcharge could also apply based on your residence status
- Budget for the surcharge as part of the total cash needed to complete, not just the deposit and standard SDLT
Use the calculator below to work out the total stamp duty due, including the additional-property surcharge, on your specific purchase price.
Frequently asked questions
How much is the second home stamp duty surcharge?
In England and Northern Ireland the additional-property surcharge is 5 percentage points on top of the standard SDLT rate for each band, applied to the full purchase price. This means a second home is taxed more heavily even in the bands where a main residence would pay 0% SDLT — the surcharge still applies from the first pound.
Does the surcharge apply if I'm replacing my main residence?
No — if you're selling your existing main home and buying a new one to live in, even if the sale completes after the purchase, you should not owe the surcharge as long as the sale of your previous main residence completes within the required window (generally within three years) after the new purchase. You typically pay the surcharge upfront and can then reclaim it once your previous home sells within that window.
Does buying a second home always mean an extra 5% on the whole price?
The surcharge is applied band by band in the same way as standard SDLT, rather than as a flat 5% of the total price — but because it adds 5 percentage points to every band including the portion that would otherwise be tax-free for a main residence, the effective extra cost is close to 5% of the full price for most typical purchases.
Are non-UK residents charged extra on top of the second-home surcharge?
Yes — a separate 2% non-UK resident surcharge can apply in addition to the additional-property surcharge for buyers who don't meet UK residence tests, meaning a non-resident buying a second UK property can face both surcharges stacked on top of the standard SDLT bands.
Try the calculators
Related reading
Second Home Mortgage vs Buy-to-Let Mortgage: Why Lenders Treat Them Completely Differently
A holiday home and a rental property both count as a 'second property' for stamp duty, but lenders assess them on entirely different criteria. Affordability, rates and use restrictions compared.
Stamp Duty on a £450,000 Second Home in 2026: Full Worked Example
Buying a £450,000 second home or buy-to-let in 2026 costs £30,000 in Stamp Duty Land Tax — standard rates plus the 5% surcharge. Full band-by-band breakdown.
SDLT Linked Transactions: Buying Extra Land or a Garden Plot in 2026
Buying a neighbour's garden strip or an adjoining plot soon after your house purchase can trigger HMRC's SDLT 'linked transaction' rules, pushing you into a higher stamp duty band. How it works in 2026.