Stamp Duty on £450,000 House (2026/27) — England & NI SDLT Calculator
Purchasing a £450,000 residential property in England or Northern Ireland incurs £12,500 for a Standard Home Mover (2.78% effective tax rate), £7,500 for an eligible First-Time Buyer, or £35,000 with the +5% Additional Property / Buy-to-Let surcharge.
| UK Buyer Category (2026/27) | Total SDLT Due | Effective Tax Rate |
|---|---|---|
| Standard Home Mover | £12,500 | 2.78% |
| First-Time Buyer (Relief up to £500k) | £7,500 | 1.67% |
| Additional Property / Buy-to-Let (+5%) | £35,000 | 7.78% |