# Remortgage calculator: what will my new payment be?

URL: https://computenow.co.uk/remortgage-calculator/

> Fixed rate ending? See your new monthly payment before the letter arrives, what switching saves and how long the fees take to pay back.

This calculator shows a worked example below. To use your own figures, add them to the URL as query parameters (listed in https://computenow.co.uk/llms.txt), for example https://computenow.co.uk/remortgage-calculator/?<parameter>=<value>.

[What's Left, step 2 of 7: What does my home cost each month?](https://computenow.co.uk/money-plan/#steps)

# Remortgage calculator

Compare your current mortgage with a new deal, including fees, to see if switching pays.
Rates checked 18 October 2026
By the ComputeNow team, checked against GOV.UK and HMRC[Sources (2)](#sources)[How we calculate](https://computenow.co.uk/methodology/)

Switching saves you
£149.64
a month. Your payment would go from £1,351 to £1,201 a month (−£150). The £999 fees are paid back in about 7 months.

## Side by side

| Item | Current deal | New deal |
| --- | --- | --- |
| Monthly payment | £1,350.52 | £1,200.88 |
| Upfront fees | £0.00 | £999.00 |
| Saving each month |  | £149.64 |

Over a 2-year deal you would be £2,592.31 better off after fees.
When your fixed rate ends, you usually move to the lender's standard rate, which costs more. Many lenders let you choose a new deal up to six months before then, so talk to your lender or a mortgage broker early. It costs nothing to ask.
This is an estimate, not financial advice. Speak to a mortgage adviser before you apply.

### Next steps

- [Mortgage overpayment calculator](https://computenow.co.uk/mortgage-overpayment-calculator/?balance=180000&rate=5.13&years=20)See what overpaying on the new deal saves.

Added. [See what's left each month](https://computenow.co.uk/money-plan/)
[What's Left](https://computenow.co.uk/money-plan/) adds up your monthly figures from each calculator and shows what is left each month.
[Switching saves you £149.64 Breakdown](#result)

## If money's tight, free help is available

It's confidential, it costs nothing and getting advice won't affect your credit score. These services help people every day with bills, borrowing and debts of any size:

- [MoneyHelper](https://www.moneyhelper.org.uk/en/money-troubles) backed by the government, with a free debt advice locator
- [Citizens Advice](https://www.citizensadvice.org.uk/debt-and-money/) online, by phone or in person near you
- [StepChange](https://www.stepchange.org/) debt charity, online advice any time
- [National Debtline](https://nationaldebtline.org/) free phone and webchat advice

## When remortgaging is worth it

Compare the monthly saving with the fees: if the fees are paid back well before the new deal ends, switching usually makes sense.
Start looking about six months before your current fixed rate ends, so you avoid moving onto the standard variable rate.

## Related calculators

[Mortgage calculator Monthly repayments and total interest](https://computenow.co.uk/mortgage-calculator/)[Mortgage overpayment calculator Pay off your mortgage sooner](https://computenow.co.uk/mortgage-overpayment-calculator/)[Mortgage affordability calculator How much you could borrow](https://computenow.co.uk/mortgage-affordability-calculator/)

## Guides and help

### Our guides

[UK interest rates and inflation today Average mortgage, savings, loan and card rates](https://computenow.co.uk/guides/uk-interest-rates-and-inflation/)

### Official services and free advice

[Check a firm is authorised FCA register: lenders, brokers and advisers](https://register.fca.org.uk/)[Financial Ombudsman Service Free help with complaints about a lender](https://www.financial-ombudsman.org.uk/)

## Sources

Each source was last checked on 18 October 2026.

- [Bank of England: quoted household interest rates (September 2026)](https://www.bankofengland.co.uk/boeapps/database/FromShowColumns.asp?SearchText=IUMBV34&Travel=NIxAZx)
- [MoneyHelper: Mortgage calculator guidance](https://www.moneyhelper.org.uk/en/homes/buying-a-home/mortgage-calculator)
These results are an estimate, not financial advice. They use the 2026/27 rates in force on 24 October 2026 and the inputs shown, so your actual tax, pay or costs may differ. Before making a decision about your money, check the figures with HMRC or your provider, or speak to a regulated financial adviser. Free, impartial guidance is available from MoneyHelper.
This page explains the rules using the 2026/27 rates in force on 24 October 2026. It is general information, not financial advice. For decisions about your own money, speak to a regulated financial adviser, or get free, impartial guidance from MoneyHelper.