UK Property Calculators
Free calculators for buying, owning, renting and investing in UK property — Stamp Duty, mortgages, affordability, buy-to-let tax and more, all on current 2026/27 rates.
Work out the Stamp Duty Land Tax (SDLT) on a property purchase in England and Northern Ireland — for home movers, first-time buyers and additional properties.
Open calculator →Work out Land and Buildings Transaction Tax (LBTT) on a property purchase in Scotland, including first-time buyer relief and the 8% Additional Dwelling Supplement.
Open calculator →Work out Land Transaction Tax (LTT) on a property purchase in Wales — main residential rates and the higher rates for additional properties.
Open calculator →Estimate the monthly repayment, total interest and overall cost of a UK repayment mortgage.
Open calculator →See how much you could borrow and the property price within reach, based on your income and deposit.
Open calculator →Add up every pound of cash you need to buy a home: deposit, Stamp Duty, conveyancing, survey, mortgage fee and removals.
Open calculator →Compare your net worth after several years if you buy, against renting and investing your deposit instead.
Open calculator →See how regular overpayments or a one-off lump sum cut years off your mortgage and reduce the total interest.
Open calculator →Compare the monthly cost, lifetime interest and the balance left at the end for interest-only and repayment mortgages.
Open calculator →A full buy-to-let appraisal: cashflow after tax, Section 24, personal vs limited company, the ICR stress test and a portfolio plotter.
Open calculator →Work out the gross and net rental yield on a buy-to-let, and the monthly income after running costs.
Open calculator →Compare buying a property with a mortgage against investing the same money, including ISA tax treatment — and see why leverage usually lifts the property return.
Open calculator →Estimate the Capital Gains Tax due when you sell a second home or buy-to-let, using 2026/27 residential rates, the £3,000 allowance and sole or joint ownership.
Open calculator →Plain-English guides on the numbers behind UK property — leverage, tax, Stamp Duty and more.
Put the same cash into a leveraged property or into the markets and you get very different answers. The honest maths on leverage, costs and the ISA tax advantage.
Read →Buy-to-let · TaxHow Section 24 can tax higher-rate landlords on more than they keep, and how holding through a limited company changes the maths as a portfolio grows.
Read →Stamp DutyBuy the same £300,000 home in England, Scotland or Wales and the tax ranges from nothing to nearly £29,000. SDLT, LBTT and LTT compared side by side.
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