Mortgage Guide

Mortgage Overpayment: How Much Can You Save?

Overpaying your mortgage can reduce the balance faster, lower interest over time, and potentially shorten your mortgage term.

How mortgage overpayments work

A mortgage overpayment is an extra payment on top of your normal monthly repayment. This extra amount reduces your outstanding balance.

Because interest is charged on the remaining balance, reducing that balance earlier can lower the total interest you pay over the life of the mortgage.

What can overpayments save?

Interest: less balance can mean less interest charged.
Time: regular overpayments may shorten the mortgage term.
Flexibility: some borrowers use overpayments to build financial breathing room.

Check limits and charges first

Many fixed-rate mortgages have annual overpayment limits, often around a percentage of the balance. Going above the limit may trigger early repayment charges.

Always check your mortgage terms before making large overpayments.

Estimate your savings

Use the Mortgage Overpayment Calculator to test monthly overpayments, lump sums, and possible interest savings.

Use Overpayment Calculator →

FAQs

Do mortgage overpayments reduce interest?

They can, because overpayments reduce the outstanding balance that interest is charged on.

Can overpaying shorten my mortgage term?

Yes, if your lender applies overpayments to reduce the balance and term rather than only reducing monthly payments.

Are there penalties for overpaying?

Some mortgages have overpayment limits or early repayment charges, especially during fixed-rate periods.

Is it better to overpay monthly or as a lump sum?

Both can help. The best option depends on your cash flow, mortgage terms, interest rate, and emergency savings.