Free Tool
Stamp Duty Calculator
Calculate SDLT for any UK residential property purchase. Updated for April 2025 thresholds.
£
Stamp duty to pay
£8,750
2.5% effective rate
Property price
£350,000
Stamp duty
£8,750
Total cost
£358,750
How the calculation works
| Band | Rate | Taxable amount | Tax |
|---|
2025 SDLT rates (from 1 April 2025)
| Property value | Standard rate | FTB rate | Additional property |
|---|---|---|---|
| £0 – £125,000 | 0% | 0% | 5% |
| £125,001 – £250,000 | 2% | 0% | 7% |
| £250,001 – £925,000 | 5% | 5% | 10% |
| £925,001 – £1,500,000 | 10% | 10% | 15% |
| Over £1,500,000 | 12% | 12% | 17% |
First-time buyer relief applies up to a purchase price of £500,000 (reverted from £625,000 from April 2025). Non-UK residents pay an additional 2% on all bands.
This calculator covers England and Northern Ireland. Scotland uses LBTT; Wales uses LTT — different rates apply.
Integrate SDLT calculation into your application
The calculation powering this tool is available as a free REST API. No auth required — just call it.
GET /api/tools/stamp-duty?price=350000&buyer_type=standard