Total Interest Saved
£0
Paid off 0 months earlier
Standard Monthly Payment
£0
Total Interest (Original)
£0
Total Interest (With Overpayments)
£0
Interest Saved
£0
Months Saved
0
Net Saving (after ERC)
£0
Enter your mortgage details to see your savings.
Mortgage Balance Over Time
Should You Overpay Your Mortgage?
Overpaying your mortgage reduces the outstanding balance faster, meaning you pay interest on a smaller amount each month · saving you money on every future payment. The longer you overpay, the greater the compounding benefit.
vs Investing: If your mortgage rate (e.g. 4.5%) is lower than investment returns you could earn (e.g. 7%+ in a stocks ISA), investing may generate more wealth. However, overpaying is guaranteed and risk-free.
ERC Warning: Most fixed-rate mortgages allow 10% overpayment per year without charge. Exceeding this triggers an early repayment charge · check your terms before overpaying.
Mortgage Overpayment FAQs
How much interest can I save by overpaying my mortgage?
On a £250,000 mortgage at 4.5% over 25 years, overpaying by £200 per month saves approximately £28,400 in interest and cuts 4 years 10 months off the term. Even £50 per month extra saves over £8,000. Use the calculator above to model your exact figures.
What is the maximum I can overpay without penalty?
Most fixed-rate mortgages allow overpayments of up to 10% of the outstanding balance per year without an early repayment charge (ERC). Exceeding this typically incurs a fee of 1–5%. Tracker and variable rate mortgages usually allow unlimited overpayments · check your mortgage offer document to confirm your limit.
Is it better to overpay my mortgage or invest?
Overpaying gives a guaranteed, risk-free return equal to your mortgage rate. If your rate is 4.5% and you expect long-term investment returns above that (e.g. 7% in a Stocks and Shares ISA), investing may generate more wealth · but it carries risk. Many people do a mix of both, overpaying within the 10% limit and investing the rest.
Should I pay off my mortgage early?
Paying off your mortgage early gives financial security, eliminates a large monthly outgoing and saves significant interest. However, weigh this against your ERC terms, whether you have higher-rate debts to clear first, and whether investing the money could deliver better long-term returns.
What is an early repayment charge (ERC)?
An ERC is a fee charged by some lenders if you repay more than the permitted overpayment allowance or exit a fixed-rate deal before the end of the fixed term. ERCs typically range from 1% to 5% of the outstanding balance and decrease over the fixed period. Always check your mortgage terms before making large overpayments.
For informational purposes only · Not financial advice · Always check your mortgage terms before overpaying