Free buy-to-let stamp duty calculator with the 5% additional-property SDLT surcharge. See BTL stamp duty on £250k–£750k investment properties.
Buy-to-let purchases use additional-property SDLT rates (5% surcharge). This calculator pre-selects additional property — adjust the price for your BTL deal.
Stamp Duty Land Tax applies to property purchases in England and Northern Ireland. The tax is calculated on progressive bands — you pay different rates on portions of the price, not a flat percentage on the full amount.
First-time buyer relief reduces tax on properties up to certain thresholds. Additional property purchases (second homes, buy-to-let) incur a surcharge on each band.
Planning your purchase budget
SDLT is due within 14 days of completion in most cases. Include it in your total cash needed alongside deposit, solicitor fees, and surveys.
This calculator models England & NI rules only. If you buy in Scotland or Wales, use LBTT or LTT calculators with local guidance.
Frequently asked questions
?How much is stamp duty on a buy-to-let property?
Buy-to-let and second homes attract a 5% SDLT surcharge on top of standard rates in England and Northern Ireland. On a £300,000 additional property, total SDLT is typically £17,500 vs £2,500 for a main home.
?What is the buy-to-let stamp duty surcharge?
Since April 2016, an extra 5% SDLT applies to additional residential properties (buy-to-let, second homes, holiday lets). The surcharge applies to the full purchase price.
?Is buy-to-let stamp duty different from first home stamp duty?
Yes. First-time buyers get relief on properties up to £625,000. Buy-to-let purchases use the additional-property rates with the 5% surcharge — use the calculator with 'Additional property' selected.
?Do first-time buyers always pay no SDLT?
No — relief applies up to defined price limits. Above those thresholds, normal band rates apply on the excess.
?Is SDLT deductible for buy-to-let?
SDLT is a capital cost for tax purposes, not an income deduction. Consult a UK tax adviser for your situation.