Stamp Duty on Buy-to-Let: The 5% Surcharge Explained (UK 2026)
Stamp duty is the biggest upfront cost most buy-to-let investors underestimate — and since October 2024 it has been bigger than ever. The surcharge that landlords and second-home buyers pay on additional property jumped from 3% to 5%, adding thousands to the cost of every deal. Get the number wrong when you model a purchase and a property that looked like it stacked up can quietly slip into the red before you even collect the first month's rent. Here's exactly how the buy-to-let stamp duty surcharge works in 2026, with the current bands, worked examples, and the situations where you can legitimately avoid or reclaim it.
Stamp Duty Land Tax (SDLT) is a tax on property purchases in England and Northern Ireland. Buy-to-let and second-home buyers pay a 5% surcharge on top of standard rates on any additional residential property costing £40,000 or more, charged on the whole purchase price.
What Changed — and When
The additional-dwelling surcharge was introduced in April 2016 at 3%. At the Autumn Budget it was increased sharply: the surcharge on additional dwellings rose from 3% to 5% on 31 October 2024, according to HMRC. That single change added £5,000 of tax to a £250,000 buy-to-let purchase overnight.
At the same time, the temporary stamp duty holiday unwound. The standard nil-rate threshold reverted from £250,000 to £125,000 on 1 April 2025, per HMRC guidance — so ordinary buyers, and landlords on top of the surcharge, now start paying tax from a lower price point. For investors, the combination means the effective tax on a typical deal is materially higher than it was 18 months ago.
Key data point: With the average UK house price at roughly £268,000 (HM Land Registry), an investor buying an average-priced property as a buy-to-let now faces around £16,800 in stamp duty — versus about £3,600 for a first-time buyer of the same home. The surcharge alone accounts for the bulk of that gap.
The 2026 Buy-to-Let Stamp Duty Bands
The surcharge is added to every standard band, and it applies from the very first pound (not just above the normal £125,000 threshold). These are the rates for an additional residential property in England and Northern Ireland:
| Portion of price | Standard rate | Buy-to-let rate (+5%) |
| Up to £125,000 | 0% | 5% |
| £125,001 – £250,000 | 2% | 7% |
| £250,001 – £925,000 | 5% | 10% |
| £925,001 – £1,500,000 | 10% | 15% |
| Above £1,500,000 | 12% | 17% |
Stamp duty is tiered, not a single flat rate: you pay each rate only on the slice of the price that falls in that band. The surcharge is not charged at all if the property costs less than £40,000 — but once you cross that line, it applies to the whole price, not just the amount above £40,000.
Worked Examples
The easiest way to see the impact is at three common price points. Each assumes a standard buy-to-let purchase by an individual who already owns a home:
| Purchase price | Standard SDLT | With 5% surcharge | Effective rate |
| £150,000 | £500 | £8,000 | 5.3% |
| £250,000 | £2,500 | £15,000 | 6.0% |
| £400,000 | £10,000 | £30,000 | 7.5% |
Take the £250,000 example step by step: you pay 5% on the first £125,000 (£6,250) and 7% on the next £125,000 (£8,750), giving £15,000. Of that, £12,500 is pure surcharge. On a deal like this, stamp duty typically wipes out the first two to three years of net rental profit — which is why it belongs in your acquisition costs, not treated as an afterthought. If you want to sanity-check the returns after tax, run the deal through our rental yield calculator guide.
Who Pays the Surcharge — and Who Doesn't
The surcharge is aimed at anyone buying a residential property that will not be their only or main home. You'll pay it if you are:
- Buying a buy-to-let while already owning (or part-owning) another dwelling anywhere in the world.
- Buying a second home or holiday home in addition to your main residence.
- Buying through a limited company (SPV) — companies pay the surcharge from the first pound with no exemption.
- Helping a child buy where you're named on the mortgage or deeds and already own a home.
You are generally outside the surcharge if:
- The property costs under £40,000.
- You're replacing your only or main residence (selling the old one on or before completion).
- The property is genuinely non-residential or mixed-use — for example a shop with a flat above — which is taxed at commercial rates instead.
- You buy six or more dwellings in a single transaction, which counts as a commercial purchase.
- It's a caravan, houseboat or mobile home.
Watch the "main residence" trap: if you buy your next home before selling your current one, you must pay the 5% surcharge upfront — even though you're not really adding a property. You can reclaim it if you sell the previous main home within 36 months, but you have to find the cash first. Plenty of movers get caught out by this timing.
Companies, Scotland and Wales
If you buy through a limited company, the 5% surcharge still applies — and there's a further sting at the top end. A company buying a single dwelling worth more than £500,000 can be charged a flat 17% rate under the corporate "enveloping" rules, unless a relief applies. In practice most genuine landlords qualify for property-rental-business relief and pay the normal banded rates, but it's a trap for anyone buying a high-value home in a company for personal use. If you're weighing up ownership structure, our limited company buy-to-let SPV guide walks through the trade-offs.
Stamp duty is also devolved. Scotland charges Land and Buildings Transaction Tax (LBTT) with an Additional Dwelling Supplement of 8%. Wales charges Land Transaction Tax (LTT) with its own higher residential rates. The bands and thresholds in this guide apply only to England and Northern Ireland — always check the right regime for where the property sits.
How the Surcharge Affects Your Numbers
Because stamp duty is a one-off cost paid on day one, it's best treated as part of your capital outlay and factored into your return on investment, not your annual yield. Three practical points for 2026:
- Budget for it before you offer. On sub-£250,000 stock the surcharge is a fixed 5% of price plus the standard band — easy to forget when you're focused on the deposit.
- It sharpens the case for below-market-value buying. A lower purchase price cuts both the deposit and the stamp duty, so discounted deals compound in your favour. See our guide to buying property below market value.
- It interacts with the rest of the tax picture. Stamp duty is an entry cost, while Section 24 hits your annual profit and capital gains tax hits your exit — model all three before you commit.
Frequently Asked Questions
How much is stamp duty on a buy-to-let property?
In England and Northern Ireland you pay standard SDLT rates plus a 5% surcharge on the whole purchase price of any additional residential property costing £40,000 or more. On a £250,000 buy-to-let that is £15,000 in total — £2,500 of standard SDLT plus £12,500 of surcharge. The surcharge bands run from 5% up to 17%.
Do limited companies pay the stamp duty surcharge?
Yes. Companies buying residential property pay the 5% surcharge from the first pound, with no first-property exemption. A company buying a single dwelling worth over £500,000 can also face a flat 17% rate under the corporate enveloping rules, unless a relief such as property-rental-business relief applies.
When do you not pay the stamp duty surcharge?
You avoid it if the property costs under £40,000, if you're replacing your only or main residence, if the property is genuinely non-residential or mixed-use, or if you buy six or more dwellings in one transaction. Caravans, houseboats and mobile homes are also excluded.
Can you claim the stamp duty surcharge back?
Yes, but only if you paid it because you bought a new main home before selling your old one. If you sell the previous main residence within 36 months you can reclaim the 5% surcharge from HMRC, usually within 12 months of the sale. There's no refund on a pure buy-to-let or second-home purchase.