Financial calculators
Practical calculators for clearer money decisions.
Start with our available mortgage tools, with more calculators for loans, savings, and debt planning ready to slot into the same experience.
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mortgages
Mortgage Overpayment Calculator
Estimate interest savings, payoff time, and balance changes from monthly mortgage overpayments.
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mortgages
Mortgage Repayment Calculator
Estimate monthly repayments, total interest, and loan-to-value for a repayment mortgage.
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mortgages
Stamp Duty Calculator
Estimate residential SDLT and upfront buying costs for England and Northern Ireland.
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savings
Compound Interest Calculator
Project how regular deposits and compound returns may grow over time.
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loans
Loan Repayment Calculator
Estimate monthly payments, total interest, and payoff timelines for personal loans.
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loans
Debt payoff
Compare repayment strategies and estimate how quickly debts could be cleared.