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Remortgage comparison calculator

Compare staying with your mortgage against switching, including the switching costs you enter.

Repayment mortgages only.

Your mortgage figures

Enter the balance you would owe at the start of the comparison. Both options use this amount.

The mortgage money you would still owe when you start comparing. Check your mortgage statement or online account, and ask your lender for an updated balance if the comparison starts later. For example, if you would owe £160,000, enter 160000. Enter any separate switching charges in the fees section, not here.

Enter the years left on your repayment mortgage, not the length of an introductory deal. Enter 0 if less than a year remains.

How long is left to repay the whole mortgage, not how long your fixed-rate deal lasts. Check your mortgage statement or ask your lender. If 25 years and 6 months remain, enter 25 here and 6 in the next box. If less than a year remains, enter 0 here.

Enter the extra months, from 0 to 11. For example, 25 years and 6 months.

Use this box for any extra months after the whole years. If you have 25 years and 6 months left to repay your mortgage, enter 25 in the years box and 6 here. If you have exactly 25 years left, enter 0 here. Check your mortgage statement or ask your lender if you are unsure.

Use the borrowing rate applicable when this comparison starts, not an introductory rate that is about to expire. Do not use APR or APRC.

The yearly interest rate you would pay if you kept your mortgage. Find your current rate on your mortgage statement, in your lender’s app or online account. If your current deal ends before this comparison starts, ask your lender which rate would apply then. Enter that borrowing interest rate, not APR or APRC, which also includes certain charges.

I don't know my interest rate

Look for the interest rate on your mortgage statement, in your lender’s app or online account. If your deal will end before this comparison starts, ask your lender which rate would apply then.

You can also explore using a rate you choose yourself. For example, type 5 for 5%. This is only an example of how to enter a percentage, not a current rate or recommendation.

Choosing this clears only this rate box, ready for your example. Your other figures stay as they are.

Enter the borrowing interest rate for the option you want to compare, not APR or APRC. You can enter 0 for either rate.

The yearly interest rate on a new mortgage you want to compare. You can use the rate from a new mortgage quote, or ask your lender or adviser to help you find it. Enter the borrowing interest rate, not APR or APRC, which also includes certain charges. A quoted rate does not guarantee that a lender will offer you the mortgage.

I don't know my interest rate

Use the interest rate from a new mortgage quote. If you do not have a quote, your lender or adviser can help you find the right figure.

You can also explore using a rate you choose yourself. For example, type 5 for 5%. This is only an example of how to enter a percentage, not a current rate or recommendation.

Choosing this clears only this rate box, ready for your example. Your other figures stay as they are.

Choose how many months to compare. This cannot exceed the remaining term. Both rates are assumed to stay unchanged for this period.

How many months you want to compare, rather than the full time left on your mortgage. For example, 2 years is 24 months. Check both deal documents for when their rates change. The calculator keeps each rate unchanged for the whole period; it cannot show a rate change partway through.

Switching costs

All fees are paid upfront, not added to the mortgage. Enter every fee, including 0 where you have confirmed none applies. If a fee is unknown, check it with your lender or adviser before comparing. Do not count the same charge twice.

A charge your current lender may make for repaying your mortgage early.

A charge for paying off your current mortgage before an agreed date. It can change depending on when you leave. Ask your current lender for the amount that would apply on your planned switching date. If they confirm a £2,000 charge, enter 2000. It is different from the administration fee for closing the account.

A fee for setting up the new mortgage deal.

The new lender’s fee for setting up the mortgage deal. Look for a product or arrangement fee in the quote, or ask the lender or adviser. For a confirmed £999 fee, enter 999. This calculator treats it as paid separately at the start, not added to the loan.

An administration fee your current lender may charge when you close the mortgage, separate from an early repayment charge.

An administration fee your current lender may charge to close the mortgage account. Check their fee information or ask for a breakdown of the cost of leaving. This is separate from an early repayment charge. Do not enter the same charge in both boxes.

The amount you would pay for the legal work needed to move the mortgage. Use a quote from the solicitor or the new lender’s confirmed details. Check what any included legal service covers. If you are unsure what you will pay, ask before entering a figure.

Any charge you would pay for the new lender’s property valuation.

The amount you would pay for the new lender to check the property’s value. Look in the mortgage quote or ask the lender or adviser. A lender’s valuation is different from a survey you arrange to check the property’s condition. Check which charge the quote refers to.

Any mortgage adviser fee you would pay for the switch.

Any fee you would pay a mortgage adviser for arranging this switch. Check the adviser’s written fee information or ask them to confirm the total. Do not assume a fee applies, or that advice is free. Enter 0 only when you have confirmed there is no fee to pay.

Your figures stay in your browser. We do not store, log or transmit them, and you do not need to provide personal details.

Your estimated comparison

Enter your figures and select “Compare mortgages” to see the results.

About this estimate

This is an estimate, not a mortgage offer or recommendation. It compares repayment mortgages using the same starting balance and remaining term. Rates are assumed to stay unchanged during the comparison period. Only the costs you enter are included, and fees are assumed to be paid upfront. Your lender or adviser must confirm the actual rates, charges and available options.

Payments are made at the end of each month. This version does not include extra borrowing, term extensions, interest-only mortgages, fees added to the loan, cashback or future rate changes. No upfront fees are included for staying. It does not assess eligibility or affordability.

Your home may be repossessed if you do not keep up repayments on your mortgage.

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