Should I overpay my mortgage or save?

As a rough guide, overpaying beats saving when your mortgage rate is higher than the interest your savings would earn, because you save more than you gain. But keep an emergency fund first, check your overpayment allowance to avoid an early repayment charge, and clear costlier debts first. It is a balance.

The core comparison

The simplest lens is rate against rate. If your mortgage charges more interest than your savings earn, overpaying the mortgage usually leaves you better off, because every pound off the balance saves you that higher rate of interest. If savings pay more than your mortgage costs (and any tax on the savings interest is accounted for), saving can win. Rates change, so the answer can change too.

Before you overpay, check three things

There is also a feelings answer

Numbers aside, some people sleep better with a smaller mortgage, and others value the flexibility of accessible savings. Both are valid. If you want to model the effect of clearing debt faster, or you are near a remortgage, the remortgage section and a regulated broker can help you see the bigger picture. We introduce you to one.

AP

Adam Parker

Founder, MortgageExplained, MortgageExplained

Adam spent nearly a decade as a mortgage adviser at Just Mortgages, with further experience in commercial finance. He is CeMAP and CF qualified. He built MortgageExplained to do one thing well: explain mortgages in plain English, then introduce you to a regulated broker when you are ready. Every page is written and reviewed by Adam.

Last reviewed: 29 June 2026

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