Guide · 10 min read

Stamp duty, explained.

Updated May 2026

Three nations, three taxes, three different sets of rules. Here's how it actually works — and the corners where buyers most often misread the bill.

It's a tax, but not the tax you think

The first thing to understand: "stamp duty" isn't one tax. It's a colloquial label for three legally separate taxes administered by three different bodies.

• England & Northern Ireland — Stamp Duty Land Tax (SDLT), administered by HMRC.
• Scotland — Land and Buildings Transaction Tax (LBTT), administered by Revenue Scotland since April 2015.
• Wales — Land Transaction Tax (LTT), administered by the Welsh Revenue Authority since April 2018.

The rates differ. The thresholds differ. The reliefs differ. A property in Cardiff and a property in Bristol at the same price can attract very different bills. Anyone quoting you a single "stamp duty rate" is almost certainly talking about SDLT, which applies only in England and Northern Ireland.

How banded ("marginal") rates work

All three taxes use a banded structure. You don't pay the headline rate on the entire purchase price — you pay each rate only on the slice of price that falls within its band.

This trips people up constantly. On an English property of £300,000 you do not pay 5% of £300,000. You pay 0% on the first £125,000, 2% on the next £125,000 (£2,500), and 5% only on the final £50,000 (£2,500). Total bill: £5,000, not £15,000.

The cliff-edge problem that plagued the old stamp duty system — where crossing a threshold by £1 could add thousands to your bill — was abolished in December 2014 when HMRC moved to a marginal-rate structure. Today, crossing a band boundary costs you exactly the rate on each additional pound, nothing more.

England (SDLT) bands

Standard residential rates from 1 April 2025:

First-time buyer relief (England)

If you and any joint buyer have never owned a residential property anywhere in the world, the nil-rate band rises to £300,000, and 5% then applies between £300k and £500k. Crucially, the relief disappears entirely above £500,000. Buy a first home for £500,001 and you're back on standard rates from the first pound — so the tax jump at that threshold can be significant.

Second home / additional property surcharge (England)

From 31 October 2024, the surcharge for additional residential properties increased from 3% to 5% on every band. That includes the nil-rate band: a £300,000 buy-to-let attracts 5% on the first £125k (£6,250), 7% on the next £125k (£8,750) and 10% on the final £50k (£5,000), giving a total of £20,000 — where a standard purchase would pay £5,000.

Worked examples — England

Example 1: Standard buyer purchasing £350,000

A straightforward move to illustrate how the bands stack:

• First £125,000 at 0% = £0
• Next £125,000 at 2% = £2,500
• Remaining £100,000 at 5% = £5,000
• Total SDLT: £7,500

Now apply first-time buyer relief to the same £350,000 purchase. The first-time buyer nil-rate band extends to £300,000, so only the final £50,000 is taxed, at 5%. Total SDLT: £2,500. The relief saves this buyer £5,000.

Example 2: Same £350,000 property as a second home

With the additional-property surcharge of 5% added to every band:

• First £125,000 at (0% + 5%) = £6,250
• Next £125,000 at (2% + 5%) = £8,750
• Remaining £100,000 at (5% + 5%) = £10,000
• Total SDLT: £25,000

That's £25,000 versus £7,500 for the same property — a £17,500 surcharge premium. The higher rates reflect the government's policy aim of discouraging investment purchases from crowding out residential buyers.

Scotland (LBTT) bands

Scotland's nil-rate threshold starts lower (£145,000), but the higher bands kick in earlier too:

First-time buyers in Scotland get a raised nil-rate band of £175,000 — a saving of up to £600 versus the standard rate. It's more modest than the English relief, but Scotland's average house prices are lower too, so the nil band covers a larger share of typical transactions.

The Additional Dwelling Supplement (ADS) is the Scottish equivalent of the English surcharge, and it works very differently: 8% on the entire purchase price in addition to the standard banded LBTT — not added to each band, but a flat 8% of the whole amount. It rose from 6% to 8% on 5 December 2024. On a £200,000 Scottish investment property, that's a flat £16,000 ADS on top of any banded LBTT.

Wales (LTT) bands

Wales has the most generous nil-rate threshold in the UK at £225,000, but no first-time buyer relief — the Welsh government's position is that the threshold already covers most first homes in Wales, where average prices are lower than in England.

Higher residential rates for additional properties in Wales use a completely separate band table — not a surcharge on top of the standard rates. Since 11 December 2024, the higher rates start at 5% from the very first pound, rising steeply through 8.5%, 10%, 12.5%, 15%, and 17% for the highest values. The Welsh approach is effectively a separate tax for additional properties rather than a premium on the standard rate.

Common mistakes

Thinking a single pound across a threshold doesn't matter

It matters less than people think. Because rates are banded, crossing £250,001 in England costs you 5p on that one extra pound, not £12,500. The "cliff edges" that created distortions in the market were abolished in December 2014. The only remaining true cliff edge is the first-time buyer relief at £500,000 in England — above that price, the entire relief vanishes.

Forgetting that "previously owned" means anywhere in the world

If you own a holiday flat in Spain, you are not a first-time buyer for SDLT or LBTT purposes — and you may owe the additional-property surcharge on a UK purchase. Properties you have inherited also count as previously owned property. The test is whether you have ever had a major interest in a dwelling anywhere in the world, not just in the UK.

Ignoring the second-home rules during a chain

If you complete on a new main home before selling your old one, you typically pay the higher rates upfront and reclaim the surcharge once the old home sells — within 36 months in England and Wales, 18 months in Scotland. If you miss the reclaim window, the overpayment is gone. Mark the deadline in your calendar on completion day.

Missing the non-residential rates for mixed-use property

Residential property and commercial property attract different SDLT rates. If a purchase includes both a dwelling and a commercial element — a farmhouse with agricultural land, or a shop with a flat above it — the property may qualify for non-residential rates, which can be significantly lower. This is worth exploring with a solicitor before exchange.

When to take advice

Stamp duty has far more reliefs and edge cases than this guide can cover: multiple dwellings relief (buying more than one property in a single transaction), shared ownership staircasing, granny annexes (genuinely complex — an annexe can trigger the higher rates even on a main home purchase), uninhabitable property relief, and corporate purchases all have their own treatment. If your purchase looks unusual in any way, a tax-aware solicitor is worth their fee many times over. The relief can often exceed the cost of advice by a wide margin.

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