What Is Stamp Duty (SDLT)?
Stamp Duty Land Tax (SDLT) is a tax charged on property purchases in England and Northern Ireland. It is paid to HMRC and must be settled within 14 days of completion. Your solicitor typically handles the SDLT return and payment as part of the completion process.
SDLT is calculated on a tiered basis — like income tax, you only pay each rate on the portion of the price that falls within each band, not on the full purchase price. This is a common source of confusion: a £300,000 property doesn't mean you pay 5% on £300,000. You pay 0% on the first £250,000 and 5% only on the £50,000 above the threshold.
Scotland and Wales have their own property taxes: Land and Buildings Transaction Tax (LBTT) in Scotland and Land Transaction Tax (LTT) in Wales. This guide covers England and Northern Ireland only.
SDLT is a tiered tax — you only pay each rate on the portion within that band. Due within 14 days of completion. First-time buyers currently pay 0% up to £425,000 — but this threshold drops to £300,000 from 1 April 2025. If you're a first-time buyer purchasing between £300K–£425K, completing before 31 March 2025 saves up to £6,250.
On 1 April 2025, SDLT thresholds revert to pre-2022 levels. For first-time buyers: the nil-rate threshold drops from £425,000 to £300,000. For all buyers: the nil-rate threshold drops from £250,000 to £125,000. If you're buying between £125,001–£250,000 or are a first-time buyer between £300,001–£425,000, completing before 31 March 2025 saves real money. The process takes 8–16 weeks — if this affects you, start immediately.
Free SDLT Calculator — England & Northern Ireland
Use the calculator below to see exactly how much stamp duty you'll pay before and after April 2025.
Enter details and
click Calculate
to see your SDLT
Current SDLT Rates — England & Northern Ireland
Standard Rates (Home Movers) — Before April 2025
| Purchase Price Band | SDLT Rate | Tax on This Band |
|---|---|---|
| Up to £250,000 | 0% | £0 |
| £250,001 to £925,000 | 5% | Up to £33,750 |
| £925,001 to £1,500,000 | 10% | Up to £57,500 |
| Above £1,500,000 | 12% | 12% on excess |
First-Time Buyer Rates — Before April 2025 (Until 31 March 2025)
| Purchase Price Band | FTB SDLT Rate | Notes |
|---|---|---|
| Up to £425,000 | 0% | No stamp duty — full nil-rate threshold |
| £425,001 to £625,000 | 5% | 5% only on the portion above £425K |
| Above £625,000 | Standard rates | FTB relief does not apply |
All Rates After 1 April 2025
| Buyer Type | Nil-Rate Threshold | Change from Jan 2025 |
|---|---|---|
| Standard / Home Mover | £125,000 | ↓ from £250,000 |
| First-Time Buyer | £300,000 | ↓ from £425,000 |
| FTB upper limit | £500,000 | ↓ from £625,000 |
| Additional property surcharge | +3% all bands | Unchanged |
⚠️ Rates accurate as of January 2025. Always verify with HMRC (gov.uk/stamp-duty-land-tax) before completing a purchase. Tax rules can change.
Worked Examples — What You'd Pay
Because SDLT is tiered, the easiest way to understand it is with real examples:
| Scenario | Property Price | SDLT (before Apr 25) | SDLT (from Apr 25) | Saving |
|---|---|---|---|---|
| FTB buying £300K | £300,000 | £0 | £0 | £0 |
| FTB buying £350K | £350,000 | £0 | £2,500 | £2,500 |
| FTB buying £425K | £425,000 | £0 | £6,250 | £6,250 |
| Home mover £250K | £250,000 | £0 | £2,500 | £2,500 |
| Home mover £350K | £350,000 | £5,000 | £10,000 | £5,000 |
| Home mover £500K | £500,000 | £12,500 | £17,500 | £5,000 |
| BTL investor £250K | £250,000 | £7,500 | £10,000 | £2,500 |
FTB = first-time buyer. BTL figure includes 3% surcharge. Figures based on current and post-April 2025 rates.
The 3% Additional Dwellings Surcharge
If you already own a residential property and are buying an additional one — whether a buy to let investment, a second home, or a holiday home — you pay a 3% surcharge on top of standard SDLT rates across all bands. This applies even if the existing property is abroad.
The surcharge does not apply if you are replacing your main residence. If you sell your main home and buy a new one on the same day, no surcharge applies — even if you briefly own two properties. However, if you buy a new main residence before selling the old one, the surcharge applies at purchase but can be refunded within 12 months if you sell the original property within that timeframe.
Scotland and Wales — Different Systems
Scotland and Wales devolved property tax from SDLT and operate their own systems:
- Scotland — Land and Buildings Transaction Tax (LBTT): Nil-rate threshold £145,000 for standard purchases, £175,000 for first-time buyers. Different rate bands above these thresholds. Additional Dwellings Supplement (ADS) applies at 6% for additional properties (increased from 4% in April 2024).
- Wales — Land Transaction Tax (LTT): Nil-rate threshold £225,000. Different rate bands. Higher Rates surcharge of 4% for additional residential properties.
If you're buying in Scotland or Wales, always use LBTT or LTT calculators provided by Revenue Scotland (revenue.scot) or the Welsh Revenue Authority (gov.wales/land-transaction-tax) respectively.