Fixed rate ending? Remortgage calculator
Enter what you still owe, the years left and your old and new rates. You'll see the change in your monthly payment, a year's difference, and the effect of a longer term.
Rates checked 3 November 2026 Checked by Daniil Shumko, editor
Change in your monthly payment
From £835 to £1,146 a month: £3,732 more a year.
A longer term lowers the monthly payment but means paying interest for longer. Compare the total cost, and any arrangement fees, before you choose. This is arithmetic, not advice on which deal to take.
How it's worked out
Your payment is recalculated on what you still owe, over the years you have left, at each rate, using the standard repayment formula. The difference between the two is what the new rate costs you each month. Bank Rate rose to 4% on 5 November 2026, and fixed rates had already moved up ahead of it.
This doesn't include arrangement or valuation fees, early repayment charges if you leave a deal early, or overpayments. It isn't a mortgage offer or advice, and we don't recommend lenders.
Common questions
How much will my mortgage go up when my fix ends?
It depends on what you still owe, the years left and the gap between your old and new rates. On £180,000 over 22 years, moving from 1.9% to 5.2% adds about £311 a month.
When should I start looking for a new deal?
Many lenders let you secure a new rate up to six months before your current deal ends. If you do nothing, you usually move to the lender's standard variable rate, which is often higher.
Why did mortgage rates rise when Bank Rate only went up a little?
Fixed rates follow what markets expect rates to do over the fixed period, not just today's Bank Rate. The Bank of England noted that benchmark two-year mortgage rates had risen by nearly 0.5 percentage points between early September and November 2026.
Sources
This calculator gives a general figure, not tax, legal or financial advice. Where the government publishes worked examples, we test it against them. Found a problem? Tell us.
Free guide
Get the free Landlord Tax 2027 guide
The new 24%, 44% and 49% rates explained with worked examples, a checklist of what to do before 6 April 2027, and the questions to ask your accountant.