If you’ve got a bit of spare money each month, overpaying your mortgage can be a genuinely smart move — but it isn’t automatically the right one. Here’s what to weigh up.
The case for overpaying
Every pound you overpay comes straight off the balance, which means you pay interest on a smaller amount for the rest of the term. Over the life of a mortgage, even modest regular overpayments can save a substantial sum in interest and shave years off when you’ll be mortgage-free. For a lot of people, the certainty of that — and the feeling of clearing the biggest debt they’ll ever have — is worth a lot.
The things to check first
Overpayment limits. Most fixed-rate mortgages let you overpay up to 10% of the balance each year without penalty. Go beyond that during a fixed period and you may trigger an early repayment charge that wipes out the benefit. Always check your specific deal.
Your emergency fund. Money overpaid into a mortgage is hard to get back out. Before overpaying, it’s wise to have accessible savings for emergencies — overpaying every spare pound and then needing a loan when the boiler dies is a false economy.
The alternatives. If your savings are earning more interest than your mortgage is charging, saving might beat overpaying. Pension contributions can be more tax-efficient again, especially for higher-rate taxpayers. And clearing more expensive debt (cards, loans) almost always comes first.
A middle path
Some borrowers use an offset mortgage, where savings sit against the mortgage and reduce the interest without being locked away — keeping flexibility while still cutting the cost.
There’s no one right answer here — it depends on your deal, your rate, your savings and your goals. We’re happy to look at your situation and help you work out whether overpaying, saving, or something in between makes the most of your money.
Your home may be repossessed if you do not keep up repayments on your mortgage.
We charge a fee for mortgage advice. The precise amount of the fee will depend upon your circumstances but will range from £149 to £499 and this will be discussed and agreed with you at the earliest opportunity.


