UK Mortgage Overpayment & ERC Allowance Calculator
See how regular monthly or lump-sum mortgage overpayments reduce your debt faster and save thousands in interest. Features a built-in 10% annual allowance compliance checker to prevent unexpected lender Early Repayment Charges (ERC).
UK Mortgage Overpayment Calculator & ERC Allowance Checker
See how overpaying on your UK mortgage cuts your loan term and saves thousands in compounding interest, while checking your lender's 10% annual Early Repayment Charge (ERC) limit.
Your Planned Overpayments:
Your planned year 1 overpayment total is £3,800. Most UK lenders allow up to 10% (£25,000) per year without Early Repayment Charges (ERC).
Saved over the full life of the mortgage
Debt-free in 20.6 years instead of 25 years
Your mandatory contract payment
How to Use UK Mortgage Overpayment & ERC Allowance Calculator
Enter Mortgage Balance & Rate
Input your current mortgage balance, interest rate APR, and remaining years.
Enter Monthly or Lump-Sum Overpayments
Specify your planned regular overpayments or lump-sum contributions.
Check ERC Compliance & Savings
Ensure your overpayments stay within the 10% penalty-free limit and inspect your shortened loan term.
Frequently Asked Questions
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