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Overpaying a £175,000 Mortgage Balance

Estimated time and interest saved overpaying a £175,000 balance at 4.8%, with 20 years remaining.

Monthly OverpaymentTime SavedInterest Saved
£5016 months£7,471
£10030 months£13,837
£20054 months£24,130
£500100 months£43,707

Use your own rate and term

£
%
yrs
£

Optional. Defaults to the standard scheduled payment for your balance/rate/term.

£

Extra amount paid on top of your regular payment each month

£

A single lump sum paid off the balance today

Overpayment impact

Time Saved

2 years, 6 months

Original Payoff DateAugust 2046
New Payoff DateFebruary 2044
Time Saved2 years, 6 months
Interest Saved£13,837

Without overpayments

Monthly Payment£1,136
Months Remaining240
Total Interest−£97,562

With overpayments

New Monthly Payment£1,236
Months Remaining210
Total Interest−£83,725

Assumes a fixed interest rate for the whole remaining term. Some mortgage deals cap the amount you can overpay each year (often 10% of the balance) without an early repayment charge - check your mortgage terms before overpaying.

Why small overpayments add up

Every pound you overpay reduces the balance interest is calculated on for the rest of the mortgage, not just that month - so the saving compounds over the remaining term. That's why even a modest, sustainable monthly overpayment tends to save more in total interest than its simple multiplication would suggest.

Other balances

Have a one-off lump sum too?

Use the full calculator to combine a lump sum with monthly overpayments.

Overpayment Mortgage Calculator