Remortgage Calculator

    Compare your current mortgage with a new deal and calculate if paying an early repayment charge is worth it

    Mortgage Details

    Enter your current mortgage and the new deal you're considering

    Current Mortgage

    £

    New Deal

    £

    Early Exit Comparison

    Calculate if it's worth paying an Early Repayment Charge to switch before your current deal ends

    Why Remortgage?

    Remortgaging could help you:

    • Reduce monthly payments
    • Lock in a better rate
    • Release equity
    • Avoid high SVR costs

    About ERCs

    Early Repayment Charges apply if you leave your mortgage during the fixed period. They typically range from 1-5% and decrease each year.

    When to Switch

    Start looking for a new deal 3-6 months before your current rate ends. Mortgage offers are typically valid for 3-6 months.

    Ready to Calculate

    Enter your mortgage details to compare your current deal with a new one and see potential savings

    Frequently Asked Questions

    Common questions about remortgaging and early repayment charges

    1

    What is an Early Repayment Charge (ERC)?

    An Early Repayment Charge is a fee you pay to your lender if you repay your mortgage before the fixed or discount period ends. ERCs typically range from 1-5% of the outstanding balance, decreasing each year. For example, a 3% ERC on a £200,000 mortgage would cost you £6,000.

    2

    When should I consider paying an ERC to switch early?

    It may be worth paying an ERC if the interest savings on a new lower rate exceed the cost of the ERC plus fees. This calculator helps you compare both scenarios. Consider switching early if: rates have dropped significantly, your fixed period has many months remaining, or you need to release equity.

    3

    How is the ERC comparison calculated?

    We compare two scenarios: 1) Staying on your current rate until the fixed period ends, and 2) Switching now and paying the ERC. The switch cost includes the ERC charge, any new product fees, and interest on the new rate from today until your original fixed rate would have ended. If the switch cost is lower, it may be worth switching early.

    4

    What happens to my mortgage when the fixed rate ends?

    When your fixed rate ends, you'll typically move to your lender's Standard Variable Rate (SVR), which is usually significantly higher - often 7-8%. That's why most people remortgage before their fixed rate ends to secure a new competitive deal.

    5

    Should I add the product fee to my mortgage?

    Adding the fee to your loan means you don't pay upfront, but you'll pay interest on it for the life of the mortgage. For short mortgage terms or large fees, it may be better to pay upfront if you can afford it. Use this calculator to compare both options.

    6

    How accurate is this remortgage calculator?

    This calculator provides indicative estimates based on the information you provide. Actual rates, fees, and affordability assessments will vary by lender. Always get a formal mortgage illustration from your lender or broker for accurate figures specific to your situation.

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    Your property may be repossessed if you do not keep up repayments on a mortgage or any debt secured on it.

    Important: The information and tools provided on this website are for informational purposes only and do not constitute financial advice. Whilst every effort has been taken to ensure accuracy, you should seek independent financial advice to ensure your specific circumstances are fully taken into account before committing to any course of action.

    Rates and product terms can change at any time — always verify with the lender before applying. Our calculators provide estimates based on the inputs you give and modelling assumptions; actual lender decisions and figures may differ. Some content on this site, including property and area summaries, is generated with the help of AI and may contain errors — please verify anything material. We link to lender, broker and third-party websites we don't control and aren't responsible for their content.

    How we make money: Free for users. We earn a referral fee from brokers and lenders when you proceed — the amount varies by partner and products taken, and is never paid by you. What we earn never shapes what you see — we're focused on one thing: helping you save on your mortgage.

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