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Remortgage Calculator UK

Compare your current monthly payment to an estimated new rate, factoring in your remaining balance, term and fee assumptions.

This calculator is for illustration only and provides estimates for general information. It is not mortgage advice, a mortgage offer, a decision in principle or a guarantee of rates, fees, eligibility or savings.

Remortgage Calculator

Compare your current payment with a new estimated rate, including fee assumptions.

Current payment
£—
New payment
£—
Monthly difference
£—
Upfront cash cost estimate £—
First 24 months payment difference £—

Estimate only. Monthly figures use capital and interest over the remaining term. Product fee and ERC figures are shown using the assumptions entered and do not include valuation, legal, advice or exit fees.

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Keep a copy of this estimate

Email yourself a PDF summary of the figures currently shown on this calculator.

Calculator results are estimates only. Actual rates, fees, eligibility and products depend on your circumstances and lender criteria.

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How to read the result

The “monthly difference” shows the gap between your current payment and the estimated payment on the new rate at the balance and remaining term entered. The cash cost line shows the product fee and Early Repayment Charge assumptions you entered.

Things to factor in

  • Product fee (often £499–£1,499) — paying upfront is usually cheaper than adding to the loan.
  • Early Repayment Charge if you exit your current deal early.
  • Valuation and legal fees — many remortgage products include free legals.
  • Whether to switch lender or stay (a product transfer).

Get a proper remortgage quote

Request a callback and a mortgage adviser or broker partner can discuss your circumstances, including product transfers and remortgage options that may be relevant.

Frequently asked questions

When should I start looking at remortgaging? +
Many borrowers start reviewing options about six months before their current fixed deal ends. Some lenders let you secure a new rate in advance and change it if a better option is available later.
What is an ERC? +
An Early Repayment Charge applies if you exit your mortgage during the fixed period. It’s usually a percentage of your outstanding balance and tapers down each year.
Can I remortgage with bad credit? +
It may be possible, depending on your circumstances, lender criteria and credit history. Product transfers with an existing lender may involve a different assessment from a full remortgage.
Should I add the product fee to the loan? +
Adding the fee spreads it over the term but you pay interest on it. Paying upfront is cheaper overall if you have the cash.
What if I do nothing when my deal ends? +
You may move onto your lender’s Standard Variable Rate (SVR), which can be higher than your current deal. Check your mortgage offer and ask your lender or adviser if unsure.

Suggested next steps

Related calculators and guides

Help to Buy Remortgage Calculator GuideEstimate remortgage scenarios where a Help to Buy equity loan may need to be retained, repaid or partly repaid.Remortgage Affordability Calculator GuideEstimate whether a remortgage payment may fit your current income, balance, property value and term.Early Repayment Charge Calculator GuideUnderstand estimated early repayment charges when overpaying, remortgaging or redeeming a mortgage early.

Calculator-led mortgage planning

UK Mortgage Calculators is centred on practical estimation tools. The pages help you model cautious scenarios before you decide whether to request a broker or adviser callback.

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