Property calculators & tools

Free, no-signup calculators to help you run the numbers on a UK property purchase or rental deal. Pick a tool below to get started.

Rental yield calculator

Calculate gross yield, net yield, annual rent, annual costs and rent-to-price comparison for a rental property.

Gross yieldNet yieldCosts
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Landlord costs calculator

Estimate buy-to-let running costs, void allowance, compliance, maintenance and net rent before mortgage and tax.

Running costsVoidsCompliance
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Buy-to-let mortgage calculator

Model a rental deal end to end: monthly cashflow, gross yield, LTV, deposit and lender-style rent coverage with a stress test.

CashflowRent coverageStress test
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Monthly cash-flow calculator

Check whether rent covers the mortgage, running costs, vacancy, compliance allowances and optional tax estimate.

Monthly profitVacancyCosts
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Stamp duty calculator

Work out your SDLT for England and Northern Ireland with first-time buyer relief, the 5% additional-property surcharge and a band-by-band breakdown.

SDLTFirst-time buyerBuy-to-let surcharge
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Property Calculators & Tools UK | Bellsoph