Second Home Stamp Duty UK: The 5% Surcharge Explained
Buying a second home in England or Northern Ireland usually costs far more in tax than buying your only home. From 1 April 2025, the standard Stamp Duty Land Tax bands apply first, and then a 5 percentage point surcharge is added to every band. This guide explains who pays it, works through two full examples, and covers the main-residence replacement refund.
Key takeaways
- The surcharge is 5 percentage points on every band, not a flat charge on the top slice only.
- A £300,000 second home costs £20,000 in total, against £5,000 as a main home.
- You count as an additional-property buyer if you still own another home worth more than £40,000 at completion.
- Married couples and civil partners are treated as one unit, and companies pay the surcharge from their first purchase.
- Sell your old main home within 3 years and you may reclaim the surcharge part.
How the 5 percent surcharge works
Stamp Duty Land Tax, usually called SDLT, is charged in slices. Each portion of the price falls into a band, and only that portion is taxed at that band's rate. Since 1 April 2025, the standard residential bands in England and Northern Ireland are 0 percent up to £125,000, 2 percent from £125,001 to £250,000, 5 percent from £250,001 to £925,000, 10 percent to £1.5 million, and 12 percent above that.
For an additional property, add 5 percentage points to each band. The effective rates become 5 percent, 7 percent, 10 percent, 15 percent, and 17 percent. That is why the surcharge, taken on its own, always equals 5 percent of the full purchase price. It is not an extra charge on the top slice only, and it applies from the first pound once the £40,000 threshold is passed. Try the figures for your own price on our UK stamp duty calculator.
| Portion of price | Standard rate | Additional-property rate |
|---|---|---|
| Up to £125,000 | 0% | 5% |
| £125,001 to £250,000 | 2% | 7% |
| £250,001 to £925,000 | 5% | 10% |
| £925,001 to £1.5 million | 10% | 15% |
| Above £1.5 million | 12% | 17% |
Worked examples: £300,000 and £450,000 second homes
The table below separates the standard bill from the surcharge, so you can see exactly where the extra money goes. Both examples use the bands in force from 1 April 2025 and assume the buyer keeps another home and is not replacing a main residence.
| Second home price | Standard SDLT | Surcharge (5% of price) | Total SDLT |
|---|---|---|---|
| £300,000 | £5,000 | £15,000 | £20,000 |
| £450,000 | £12,500 | £22,500 | £35,000 |
On the £300,000 home, the standard bill is £5,000: nothing on the first £125,000, £2,500 on the next £125,000, and £2,500 on the final £50,000. The surcharge adds £15,000, giving £20,000 in total. On the £450,000 home, the same method gives a £12,500 standard bill and a £22,500 surcharge, for £35,000 in total. The maths is simple once you split it this way, but the gap between a main home and a second home is large, so budget for the full total before exchange.
Who counts as an additional-property buyer
You are generally an additional-property buyer if, at the end of completion day, you own a major interest in another residential property worth more than £40,000 and the new purchase is not replacing your only or main residence. It does not matter whether the other property is a buy-to-let, a holiday home, a home abroad, or a property you rarely use. Ownership, not use, is the test.
Joint buyers need extra care. If one joint buyer already owns another home, the higher rates usually apply to the whole purchase, not just that buyer's share. Inherited shares, property held in trust, and interests abroad can also count, so tell your conveyancer about every property interest before exchange, not after completion.
Replacing your main home: pay first, reclaim later
If you buy a new main home before selling the old one, you will usually pay the higher rates upfront, because on completion day you own two homes. That upfront payment is not necessarily the final bill. If you sell or give away your previous main home within 3 years of buying the new home, you can apply for a refund of the higher-rate part only.
Timing matters, so organise your evidence early. The sale must fall inside the 3-year window, although HMRC can consider exceptional circumstances. Claim promptly through the route GOV.UK describes, and keep your sale documents safe. Separately, GOV.UK states HMRC has up to 9 months to carry out a compliance check after a repayment.
This surcharge guide is the mirror image of first-time buyer relief. Relief reduces the bill for a first home; the surcharge increases it for an additional home. For the relief side of the rules, see our first-time buyer stamp duty relief guide, and do not mix the two: a second-home buyer cannot claim first-time buyer relief on that purchase.
Married couples, companies, and the rest of the UK
Married couples and civil partners are treated as a single unit for this test. If either partner owns another residential property, a purchase by the other partner alone can still attract the surcharge. Separation does not automatically break the unit, so take advice on your exact status before relying on a sole-name purchase to avoid the charge.
Companies are treated differently again. A company has no main residence, so it generally pays the higher rates on a residential purchase from the first property, not only the second, where the price is above £40,000. Finally, remember this guide covers England and Northern Ireland only. Scotland charges Land and Buildings Transaction Tax and Wales charges Land Transaction Tax, each with its own additional-property rules.
Bottom line: If you will still own another home at completion, plan on standard SDLT plus 5 percent of the full price, check the refund rules only if the new home truly replaces your main home, and confirm the final figure with your conveyancer before you commit.
Sources & further reading
- GOV.UK, Stamp Duty Land TaxStandard bands, 5 percent additional-property addition, 14-day return and payment deadline, Scotland and Wales separate taxes (curl: 200, 31 Oct 2026).
- GOV.UK, Apply for a Refund of Stamp Duty Land Tax3-year sale window for the higher-rate refund, 9-month HMRC compliance-check window (curl: 200, 31 Oct 2026).
This article is general information only, not tax or legal advice. Tax rules and rates can change, so confirm your position with a qualified conveyancer or tax adviser before completing a purchase.