Can You Overpay a Fixed-Rate Mortgage in the UK?
- Mar 21
- 1 min read
Most UK lenders allow some level of overpayment during a fixed-rate period — but the rules vary significantly.
Typical Overpayment Allowances
Many lenders allow up to 10% of the outstanding balance each year without penalty. Exceeding this may trigger Early Repayment Charges (ERCs).
Why Fixed Rates Need Careful Planning
Overpaying too aggressively during a fixed period could reduce flexibility or lead to unexpected costs.
Run your own examples here:👉 Mortgage Overpayment Calculator
Example: £300 Monthly Overpayment
Small consistent overpayments often avoid ERC thresholds while still reducing interest significantly over time.
Questions to Ask Before Overpaying
• Does my lender reset allowances annually?
• Are lump sums treated differently?
• Will overpayments reduce term or payments?
If you’re unsure, a broker can confirm your specific lender rules before you make changes.
