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Buy-to-let mortgage calculator — repayment & interest-only

Calculate monthly mortgage payments for a UK buy-to-let, including capital-and-interest repayment and interest-only options.

Enter loan amount, interest rate and term to see the monthly payment, total interest and a stress-test scenario at a higher rate. Useful for sizing a deal before you offer.

Related: rental yield calculator · stamp duty calculator · 2026 compliance guide.

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