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Overpaying a £1,925,000 Mortgage Balance

Estimated time and interest saved overpaying a £1,925,000 balance at 4.8%, with 20 years remaining.

Monthly OverpaymentTime SavedInterest Saved
£501 months£8,054
£1003 months£15,990
£2006 months£31,489
£50015 months£75,262

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

3 months

Original Payoff DateAugust 2046
New Payoff DateMay 2046
Time Saved3 months
Interest Saved£15,990

Without overpayments

Monthly Payment£12,492
Months Remaining240
Total Interest−£1,073,184

With overpayments

New Monthly Payment£12,592
Months Remaining237
Total Interest−£1,057,194

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