Ten calculators for the most common remortgage decisions — savings, affordability, overpayments, early repayment charges and more. Each one includes the underlying methodology and worked examples so you can sense-check the result.
Work out your potential remortgage savings with a step-by-step methodology, worked examples across common loan sizes,...
Open calculator →Understand how UK lenders calculate remortgage affordability in 2026, what income multiples apply, and how to use an...
Open calculator →Calculate the impact of mortgage overpayments on interest, term and break-even points. Worked examples for lump-sum and...
Open calculator →Remortgages usually do not trigger stamp duty, but some scenarios do. This calculator page explains when SDLT applies,...
Open calculator →Calculate whether paying an early repayment charge to exit your current fix is worth it. 2026 rate context, four worked...
Open calculator →Calculate your remortgage LTV, understand the tier thresholds, and see how dropping an LTV band can reduce your rate by...
Open calculator →Calculate whether consolidating debts into your remortgage saves money over the full term. Worked examples with credit...
Open calculator →Calculate how shortening or extending your mortgage term changes monthly payments and total interest. Worked examples,...
Open calculator →Calculate the monthly payment jump when moving from interest-only to repayment at remortgage. Worked examples,...
Open calculator →Calculate maximum BTL remortgage borrowing using ICR, stress rates, and rent cover ratios. 2026 lender criteria, Section...
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