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Mortgage Overpayment Calculator

See how regular or one-off mortgage overpayments could reduce your interest and shorten your mortgage term.

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HOW IT WORKS

How the Mortgage Overpayment Calculator works

1

Reduce principal

Extra payments reduce the outstanding mortgage balance sooner.

2

Pay less interest

A smaller balance means less interest accrues over the remaining term.

3

Potentially finish earlier

If the regular payment stays the same, overpayments can shorten the time until the mortgage is cleared.

COMMON QUESTIONS

Frequently asked questions

Is it worth overpaying my mortgage?

It depends on your mortgage rate, savings, emergency fund, other debts and personal goals. This calculator only shows the mathematical effect of overpayments.

How much can I overpay?

Mortgage terms differ. Some lenders limit penalty-free overpayments or charge early repayment fees, so check your current mortgage conditions.

Does overpaying reduce the payment or the term?

This calculator assumes your normal payment continues, so the main effect shown is a shorter term and lower total interest.

Should I overpay or invest?

That depends on personal circumstances and investment risk. This calculator does not provide investment advice.