Free UK Property Calculators

Quick, free calculators for buying, renting and letting property in the UK. No sign-up needed. Rates are updated for 2026.

Stamp duty

SDLT for England and Northern Ireland, with first-time buyer relief and the 5% second-home surcharge.

Land and Buildings Transaction Tax, first-time buyer relief and the 8% Additional Dwelling Supplement.

Welsh Land Transaction Tax at main and higher rates.

Monthly repayments, total interest and how much you could borrow.

See the interest you save and how much sooner you are mortgage-free.

Compare your current rate with a new deal, including fees and break-even.

Rental cover test (ICR), maximum loan from rent, payments and yield.

Gross and net rental yield, with running costs and empty weeks.

How much rent you can afford, and the salary agents want to see.

New to buying or renting in the UK? Read our property guides.