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
Update to date
Reflects 2025/26 rates and April 2025 changes
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This calculator provides a planning estimate only and is not tax, mortgage, legal, insurance, or investment advice. SDLT applies to England and Northern Ireland; Scotland and Wales have different property transaction taxes. Check current rules and speak to a regulated adviser before acting.