Stamp Duty Second Home Calculator (UK 3% Surcharge)

UK Second Home Stamp Duty Guide 2026/27

What do I need to know about The 3% Surcharge?

From 1 April 2016, an additional 3% Stamp Duty Land Tax applies to purchases of additional residential properties in England and Northern Ireland (similar surcharges in Scotland and Wales). The surcharge applies on top of standard SDLT rates: SDLT bands 2026/27 (England/NI): 0% up to £250,000. 5% on £250,001-£925,000. 10% on £925,001-£1,500,000. 12% above £1,500,000. With 3% surcharge (second homes): 3% up to £250,000. 8% on £250,001-£925,000. 13% on £925,001-£1,500,000. 15% above £1,500,000. Example: a £400,000 second home incurs 3% up to £250,000 plus 8% on the remaining £150,000, a noticeably higher total than the standard rates alone.

What's the key thing to understand about Who Pays the Surcharge?

The surcharge applies when, at the end of the day of purchase, you (or your spouse/civil partner) own two or more residential properties anywhere in the world. Common scenarios that trigger surcharge: buying a second home for personal use. Buy-to-let property (personal or company name). Buying for a child but in your name. Inheriting a property and buying another. Owning property abroad and buying UK property. Owning a leasehold property (any term over 7 years counts) and buying another. Does NOT apply if replacing your only or main residence, even briefly owning two properties during a sale-and-purchase overlap, provided the old one is sold promptly.

What's the key thing to understand about Refunds and Reclaim Routes?

Sold previous main home WITHIN 3 years of buying new one: can claim refund of the 3% surcharge originally paid. Apply via gov.uk SDLT refund form. Refund typically processed within 8 weeks. Multiple Dwellings Relief (MDR): closed for transactions completed after 1 June 2024. Was used to reduce SDLT on multiple property purchases in one transaction. Granny annexes / subsidiary dwellings: complex rules — annexe may count separately for surcharge purposes, or may not, depending on the facilities and access the annexe has — a self-contained annexe with its own entrance and utilities is more likely to be treated as a separate dwelling for surcharge purposes.

What's the key thing to understand about Scotland LBTT and Wales LTT?

Scotland Land and Buildings Transaction Tax (LBTT) + Additional Dwelling Supplement (ADS): ADS is 6% (raised from 4% in December 2022). LBTT bands 2026/27: 0% to £145k. 2% £145-£250k. 5% £250-£325k. 10% £325-£750k. 12% over £750k. ADS adds 6% to all bands. £300k second home in Scotland: LBTT £4,600 + ADS £18,000 = £22,600. Significantly higher than England equivalent (£11,500). Wales Land Transaction Tax (LTT) + Higher Rate: Higher rate is 4% (was 3%). LTT bands 2026/27: 0% up to £225,000. 6% on £225,001-£400,000, with rates rising further above that threshold.

Why the Surcharge Applies From the First Pound, Not Just Above the Threshold

When purchasing an additional residential property — a second home, holiday home, or buy-to-let — a surcharge is added on top of the standard Stamp Duty Land Tax rate across every band of the purchase price, including the portion that would otherwise fall within the zero-rate band for a main residence purchase. This is a key difference from the standard bands: a first-time or sole-residence buyer pays nothing on the lowest slice of the price, but a second-property buyer pays the surcharge rate on that same slice too, making the lowest band meaningfully costlier for additional-property purchases than the headline standard rates alone would suggest.

When the Surcharge Can Be Refunded

If you're replacing your main residence — selling your only or main home and buying a new one — but the sale of the old property completes after the purchase of the new one (a common timing gap), the surcharge is charged upfront on the new purchase because, at that moment, you technically own two properties. However, if you then sell the previous main residence within a set window after the new purchase (commonly within three years), you can typically reclaim the surcharge paid. This refund mechanism exists specifically to avoid penalizing ordinary home-movers who are simply unlucky with completion timing, as distinct from genuine second-home or investment purchasers who have no intention of selling an existing residence.

Buying With a Partner or Family Member: How Joint Ownership Affects the Surcharge

The additional property surcharge is assessed based on the ownership position of everyone named on the purchase, not just the main buyer, which catches many joint purchasers by surprise. If one buyer already owns a property anywhere in the world, even one they don't currently live in, the surcharge generally applies to the whole purchase, regardless of whether the other joint buyer has never owned property before. This differs sharply from first-time buyer relief, which is typically only available where every buyer on the transaction is a genuine first-time buyer, so a couple where one partner already owns a flat they're keeping as a rental, for example, usually can't claim first-time buyer relief even for the partner who has never owned anywhere, and the purchase is generally treated as an additional property for surcharge purposes. Married couples and civil partners are typically treated as a single unit for these rules even if only one of them is named on the new purchase, meaning a spouse's existing property ownership can trigger the surcharge on a purchase made solely in the other spouse's name, a rule that catches out couples who assumed keeping one property in just one name would avoid it.

Worked Example: Standard SDLT vs. the Second-Home Surcharge, Side by Side

Take a £450,000 second home purchase in England. Under the standard residential rates (what a main-residence buyer would pay), nothing is due on the first £250,000, and 5% applies to the remaining £200,000, giving standard SDLT of £10,000. Under the second-home surcharge, the same purchase is instead charged 3% on the first £250,000 (£7,500) plus 8% on the remaining £200,000 (£16,000), giving a surcharge-inclusive total of £23,500.

The extra £13,500 is entirely due to the 3% surcharge being layered across every band of the price, including the slice that would otherwise be entirely tax-free for a main-residence purchase — illustrating why second-home and buy-to-let buyers should always budget using the surcharge total, never the standard-rate figure a mortgage broker or portal listing might quote by default.

Why Buy-to-Let Purchases Are Treated the Same as Second Homes

A common misconception is that the 3% surcharge is a special 'landlord tax' separate from the second-home surcharge, when in fact HMRC applies exactly the same surcharge rate and the same bands to a buy-to-let purchase as it does to a holiday home or any other additional residential property — the test is simply whether the buyer already owns residential property anywhere in the world at the end of the day of the new purchase, with no distinction made for whether the new property will be rented out, used occasionally, or left empty. This means a landlord buying their third rental property pays the same surcharge rate on it as a homeowner buying a second home purely for personal weekend use, and a buy-to-let purchase made through a limited company is also subject to the surcharge (companies buying residential property are, with limited exceptions, treated as owning an additional property on every purchase, since a company can't have a 'main residence' to fall back on for the exemption). The one place buy-to-let purchases can differ from personal second homes is in what happens afterward: because a buy-to-let property is rarely sold to fund a main-residence purchase, landlords are far less likely to ever qualify for the refund-on-selling-your-previous-main-home route described elsewhere on this page, which exists specifically for people replacing their own residence, not for investment property that's simply being held or eventually sold on its own timeline.