Compare your current schedule with a monthly overpayment, a one-off lump sum, or both.
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across the remaining mortgage
Time saved
New monthly total
Original remaining term
Estimated new term
Check your lender's annual overpayment allowance and early repayment charge before paying extra.
Early repayment charges can reverse the benefit. Many deals cap penalty-free overpayments. This estimate does not model your lender's allowance, daily interest method or a future rate change.
What this calculation shows
We amortise the current balance at the entered rate and term, then run the same schedule after applying the lump sum and monthly overpayment. The difference is the estimated time and interest saved.
Before making an overpayment
Keep an emergency buffer, compare the mortgage rate with what cash could earn after tax, and confirm whether your lender reduces the term, payment, or both. Overpaying is usually irreversible.
