Inputs
UK landlord calculator
Stamp duty calculator for landlords buying a second property
Calculate the stamp duty land tax (SDLT) due when buying a second property or buy-to-let in England or Northern Ireland. Includes the 5% additional dwelling surcharge introduced October 2024 and the April 2025 threshold changes.
Output
Your SDLT estimate
Ready
£0
Enter figures and calculate.
Planning estimate
Unbiased calculation based on HMRC rules
Up to date
Reflects 2025/26 rates and April 2025 changes
Privacy first
Your data stays in your browser. Nothing is stored.
Clear & transparent
Plain English explanations you can trust