Buying a second property, whether it is a buy-to-let, a holiday home, or simply a new main residence bought before the old one sells, usually means paying more Stamp Duty Land Tax than you would on a single home. Here is what that involves, and how to work out what you will owe.
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How the second home surcharge works
If you already own a residential property anywhere in the world and you buy another one for £40,000 or more in England or Northern Ireland, you pay a surcharge on top of standard Stamp Duty Land Tax. The surcharge adds 5 percentage points to each standard rate band. It rose from 3% to 5% on 31 October 2024, so it is always worth checking the current rate before budgeting for a purchase.
The surcharge applies to buy-to-lets, holiday homes, and second residences alike. It makes no difference how you intend to use the property, only whether you already own another one.
How to calculate your stamp duty on a second home
Standard SDLT is charged in bands, with each portion of the price taxed at its own rate rather than the whole price at a single rate. The current standard bands, in place since 1 April 2025, are 0% up to £125,000, 2% on £125,001 to £250,000, 5% on £250,001 to £925,000, 10% on £925,001 to £1.5 million, and 12% above that. Add the 5% surcharge to every band and an additional property is taxed at 5%, 7%, 10%, 15% and 17% respectively.
As an example, a £350,000 second home would attract standard SDLT of £7,500. The surcharge is calculated on the full price rather than in slices, adding £17,500, for a total of £25,000. Rates and thresholds are set by the government and can change at future Budgets, so the exact figure should always be confirmed using HMRC’s own calculator before exchange.
Buy-to-let and holiday homes
There is no separate stamp duty regime for buy-to-let investors or holiday home buyers. Both pay the same additional-property surcharge as anyone else buying a second residential property, calculated in the same way. The distinction matters more for ongoing tax, such as income tax on rental profits, than it does for the stamp duty paid at purchase.
Related: A complete guide to buying a buy-to-let property
Replacing your main residence
If you sell your existing main home and complete on your new one on the same day, the surcharge does not apply. If you buy your new home before selling the old one, you pay the surcharge upfront, because you temporarily own two properties. You can reclaim it if you sell your previous main residence within 3 years of the new purchase, provided you submit the refund claim within 12 months of that sale.
Buying with someone else, or as a non-UK resident
If you are buying jointly and any one buyer already owns another property, the surcharge can apply to the whole purchase, even if the other buyer owns nothing else. It is worth checking every buyer’s position before assuming the standard rate will apply.
Non-UK residents pay a further 2% on top of all applicable rates, including the additional-property surcharge where relevant. Residence is assessed against time spent in the UK, so it is worth confirming your status early, since it affects the total due at completion.
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Exemptions and other cases
Properties bought for less than £40,000 are exempt from the surcharge entirely. Companies buying a residential property above £500,000 generally pay a flat 17% rate rather than the banded rates, unless a specific relief applies.
Multiple Dwellings Relief, which previously reduced the cost of buying several properties in one transaction, was abolished from 1 June 2024 and is no longer available for new purchases.
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Other costs to consider when buying a second property
Stamp duty is usually the largest additional cost, but not the only one. Budget for legal and conveyancing fees, a survey, mortgage arrangement fees if you are borrowing, and buildings insurance from the point of exchange. Buy-to-let purchases often carry a higher mortgage arrangement fee than a standard residential loan, so it is worth comparing the full cost of borrowing rather than the headline rate alone.
Stamp duty on a second property is one of the more complex areas of a purchase, and the right answer depends on your exact circumstances, from how a joint purchase is structured to whether a sale and purchase can be timed together.
At Martin & Co, we work with buyers through exactly these situations, and while we are not tax advisers, we can point you towards the right professional advice and help you plan your purchase with the full costs in view.
If you are buying a second property and would like local guidance, get in touch with your nearest Martin & Co branch.
