Mortgage Overpayments: When They Help and When to Think Twice

Making overpayments on your mortgage reduces your outstanding balance faster, shortens the term, and cuts total interest paid. But overpayments are not always the best use of spare cash - the right answer depends on your rate, your savings buffer, your lender's limits, and what else is competing for that money.

How overpayments reduce term and total cost

Paying more than the minimum each month reduces the balance on which interest compounds, often saving significant amounts over a 25-year mortgage.

The 10% annual overpayment rule

Most fixed-rate mortgages cap overpayments without a penalty, typically at 10% of the outstanding balance per year.

When savings may come before overpayments

If your mortgage rate is lower than savings rates, or your emergency fund is thin, keeping liquidity may be more valuable than reducing debt faster.