Free financial calculator

Mortgage Overpayment Calculator

Estimate the interest and time potentially saved by regular mortgage overpayments.

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Adjust the assumptions

Mortgage Overpayment Calculator

Estimate the interest and time potentially saved by regular mortgage overpayments.

Figures are estimates. You can adjust every assumption.

Result

£0

View year-by-year breakdown
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Questions answered

What this calculator helps you work out

  • How much mortgage interest could overpayments save?
  • How much sooner could the mortgage be repaid?
  • What would the new total monthly payment be?

Common questions

Mortgage Overpayment Calculator FAQs

Can lenders limit overpayments?

Yes. Many mortgages have annual limits or early repayment charges.

Does the interest rate stay fixed in reality?

Not always. This calculator holds it constant for comparison.

Are one-off overpayments supported?

Use the reduce-term-or-payment calculator to model a lump sum and compare both possible outcomes.

Can I use this for an interest-only mortgage?

Use the dedicated interest-only mortgage overpayment calculator instead, because the normal payment does not amortise capital in the same way.