An early repayment charge (ERC) is a fee a UK mortgage lender can charge if you pay off your mortgage (or switch to a different lender) before the fixed-rate period or other specified term ends. For many homeowners, ERCs are a nasty surprise—they can range from 1-5% of the outstanding mortgage balance, adding thousands of pounds to the cost of moving house or refinancing. The regulatory framework governing ERCs is set out in the FCA's MCOB (Mortgages: conduct of business) rules, which require lenders to provide clear disclosure of ERC amounts and conditions. However, the rules have gaps, and lenders often calculate ERCs in ways that penalise borrowers. Understanding exactly how your ERC is calculated—and whether you might be able to avoid it or challenge it—is critical if you're considering switching lenders, selling your home with an outstanding mortgage, or refinancing before your term ends. ERCs are particularly contentious because they can lock homeowners into disadvantageous mortgage deals. If your mortgage is on a standard variable rate (SVR) significantly higher than the current market rate, and you want to switch to a better deal, an excessive ERC might make switching unaffordable. Similarly, if you're selling your home, an unanticipated ERC can consume a large portion of your equity. The FCA has made improvements to MCOB rules over recent years, requiring lenders to disclose ERCs upfront and to calculate them fairly, but disputes still arise.
What is a Early Repayment Charges & Calculation?
An early repayment charge (ERC) is a fee charged by a mortgage lender if a borrower repays the mortgage (in full or in part, depending on the lender's terms) before the end of the charged period (usually the fixed-rate period). ERCs are typically calculated as a percentage of the amount being repaid early, commonly ranging from 1-5% depending on the lender and the time remaining in the charged period. Some lenders calculate ERCs on a sliding scale (e.g., 3% if repaid in Year 1, 2% in Year 2, 1% in Year 3). The ERC is disclosed in the mortgage offer and is regulated by the FCA's MCOB rules (MCOB 11) which require lenders to provide clear information about when ERCs apply, how they're calculated, and a reasonable estimate of the likely amount. ERCs are most commonly charged on fixed-rate mortgages and some tracker/discounted mortgages; they are less common on standard variable rate (SVR) mortgages. The purpose of ERCs (from the lender's perspective) is to protect against interest rate risk: if you fixed in a low-interest environment and rates rise, the lender can charge you to exit the deal. However, in a rising-rate environment where you're trying to switch to an even worse deal, ERCs still apply, which is why they're controversial.
Red flags to watch for
FCA MCOB 11R requires clear disclosure of ERC amounts and calculation methods. If no ERC was mentioned in your mortgage offer, or it was buried in fine print without a clear illustration of the likely amount, the lender has breached disclosure rules.
Some lenders specify a range (e.g., 1-3%) but then calculate an amount outside that range. Check your mortgage offer carefully. If the calculated ERC exceeds what was disclosed, you have grounds to challenge it.
Calculation methods matter significantly. Some lenders use simple interest calculations; others compound. If your offer doesn't specify the calculation method and the lender is applying a method that inflates the ERC, this may be unfair under Consumer Credit Act s.62.
Some lenders charge ERCs even for internal switches (e.g., moving from a 3-year fix to a 5-year fix with the same lender). While they have the right, the FCA has questioned whether this practice is fair and compliant with MCOB rules on transparency.
Not all lenders charge ERCs on overpayments; some allow a percentage of overpayment without charge. If your offer permits penalty-free overpayments but the lender is charging ERC on all early payments, they're exceeding their disclosed terms.
ERCs should decrease as you approach the end of the charged period (e.g., 3% in Year 1, 2% in Year 2, 1% in Year 3, then zero). If your lender is charging the same ERC regardless of timing, this is unusual and may be challengeable.
Your legal rights
UK mortgage ERCs are regulated under the FCA's Handbook, specifically the Mortgages: conduct of business (MCOB) sourcebook. MCOB 11R requires lenders to provide clear and transparent information about early repayment charges in the Mortgage Illustration and to explain the circumstances under which ERCs apply and how they are calculated. Under MCOB 1R, lenders must treat customers fairly. The Consumer Credit Act 1974, s.62, allows courts to strike down terms that are unfair or cause a significant imbalance in parties' rights and obligations. If an ERC is calculated in a manner not disclosed, or is disproportionate to the lender's actual loss, courts can hold them unfair. The Unfair Terms in Consumer Contracts Regulations 1999 (now reflected in Consumer Rights Act 2015) provides that unfair terms are not binding. The FCA has issued guidance (FCA HANDBOOK MCOB 7R, MCOB 9R) requiring firms to have ERC policies and to calculate them fairly. If you believe an ERC is unfair, you can complain to the lender and, if not resolved, to the Financial Ombudsman Service.
Questions to ask before you sign
- 1How is the early repayment charge calculated—as a percentage of the outstanding balance, and does it decrease over time?
- 2When does the ERC apply—only if I repay the full mortgage, or also for partial overpayments?
- 3Until when does the ERC apply—when does the 'charged period' end?
- 4What was the exact ERC figure stated in my mortgage offer and illustration?
- 5If I switch to a different product with the same lender, would an ERC apply?
- 6Has the calculation method (simple vs. compound interest) been clearly disclosed?
- 7What is my right to make penalty-free overpayments, and does the ERC apply to those?
Disclaimer: This guide is for educational purposes only and does not constitute legal advice. Contract law varies by jurisdiction and individual circumstances. Always consult a qualified legal professional before making decisions based on this information.