Is it better to overpay your mortgage or reduce the term?

Overpaying and formally reducing the term often look the same on the surface — both shorten how long you're in debt. But overpaying is far more flexible, and on most UK mortgages it's the better choice.

Your mortgage

UK calculator
Estimated monthly payment£1,254
Your overpayment result

You'll be mortgage-free 6 years 9 months earlier
and save £46,940 in interest.

New payoff
September 2044
was June 2051
Total interest
£109,338
was £156,277

Balance over time

Without overpaying With overpaying
WithoutWith overpay
Term25 years18 years 3 months
Total interest£156,277£109,338
You save£46,940 · 6y 9m

Want to clear it even faster?

A lower interest rate could save you thousands more on top. See if you could remortgage to a better deal.

Check remortgage rates

We may receive a commission if you remortgage through a partner broker. This never affects the rate you're offered.

Overpaying: flexible, fee-free, no commitment

You keep your contractual term and Direct Debit. Every overpayment chips the balance down, the lender shortens the term automatically, and you can stop or restart any time. If money is tight you just stop overpaying — no admin, no fees.

On UK fixed/tracker deals, overpayments are fee-free up to 10% of the balance per year.

Formally reducing the term: locks you in

Asking your lender to shorten the contractual term raises your minimum monthly payment forever (until you remortgage). If your income drops, you still owe the higher payment.

Some lenders charge a fee to change the term. Most won't reduce your term below an affordability threshold either.

Which saves more interest?

Almost identical when the £ amounts match. £200/month overpayment vs. shortening the term so the contractual payment is £200 higher both clear the mortgage in the same time and save the same interest.

Overpaying wins on flexibility. Reducing the term wins only if you'd otherwise lack discipline to overpay regularly.

FAQs

More overpayment guides

Try a specific calculator

Calculator by lender

Important: This article is for general information and is not financial advice. Always speak to a qualified UK mortgage adviser before making decisions about overpayments, remortgaging, or your specific mortgage product.