UK Homeowners Urged to Act Before Their Fixed Mortgage Deal Ends as Rates Climb Higher

UK homeowners whose fixed mortgage deals are coming to an end are being urged to check their options early, as mortgage rates have been moving higher again and some borrowers could face a noticeable increase in their monthly payments.

The warning is particularly important for people who secured a cheap fixed-rate mortgage several years ago. When that deal expires, they may find that the mortgage rates available today are considerably higher than the rate they have been paying.

Recent figures show just how quickly the mortgage market has changed.

Moneyfacts reported this week that a number of lenders have continued to increase rates on fixed residential mortgages. By 24 September 2026, some of the cheapest remortgage deals were already approaching 5%, although the exact rate available to a homeowner depends on factors including their loan-to-value, income, credit history and the mortgage product they choose. (Moneyfactscompare)

The wider market has also become more expensive. Earlier in September, Moneyfacts data showed the average two-year fixed residential mortgage rate at around 5.59%, while the average five-year fixed deal stood at about 5.63%. Both had been below 5% at the beginning of 2026. (The Guardian)

That means homeowners should not assume they will automatically be able to replace their existing mortgage with another deal at a similar interest rate.

For example, someone who locked into a mortgage when rates were much lower could receive a very different monthly repayment figure when they come to remortgage.

The size of any increase will depend on how much they still owe, the remaining mortgage term, the interest rate available to them and whether they change the length or type of their mortgage.

This is why checking a mortgage several months before the fixed period ends can be important.

Waiting until the final few days could leave a borrower with less time to compare lenders, consider a product transfer with their existing lender or speak to a mortgage broker about alternatives.

There is another reason homeowners should pay attention to the date their fixed deal ends.

If a borrower reaches the end of a fixed mortgage without arranging another deal, they will normally move onto their lender’s standard variable rate, or another applicable reversion rate set out in their mortgage agreement.

That rate can be considerably higher than the fixed rate they were previously paying.

As an example of the difference currently visible in the market, Moneyfacts listed a two-year remortgage product from first direct at 4.84% on 24 September, after which the mortgage would revert to 6.24%. The deal also carried a £490 product fee and was available at a maximum 60% loan-to-value. (Moneyfactscompare)

That does not mean this particular mortgage will be suitable or available for every homeowner. It demonstrates why borrowers need to look beyond the headline interest rate and check the full cost of a mortgage.

Product fees can sometimes run into hundreds or even thousands of pounds. A mortgage offering a slightly lower interest rate but charging a large fee may not necessarily work out cheaper than a mortgage with a somewhat higher rate and a smaller or zero product fee.

The amount of equity in a property can also make a major difference.

Someone who owes £150,000 on a home worth £300,000 has a 50% loan-to-value ratio. A homeowner who owes £270,000 on the same £300,000 property has a 90% loan-to-value ratio.

Generally, borrowers with more equity have access to a wider selection of competitive mortgage products, although lenders also consider affordability and other eligibility requirements.

Recent Moneyfacts figures illustrate this difference.

For first-time buyers with a 10% deposit, one of the lowest two-year fixed rates listed on 24 September was 5.15%, while a five-year option was listed at 4.99%. For borrowers with only a 5% deposit, some of the lowest rates were higher. (Moneyfactscompare)

Mortgage rates have been under renewed pressure partly because lenders do not price fixed mortgages solely according to the Bank of England’s Bank Rate.

Fixed mortgage pricing is also influenced by financial market expectations and swap rates, which reflect expectations about future interest rates.

During September, UK swap rates rose sharply amid concerns about inflation and movements in global bond markets. The five-year swap rate climbed above 4.52% earlier in the month, its highest level since October 2023, putting pressure on lenders to increase fixed mortgage rates. (The Guardian)

This explains why homeowners can sometimes see mortgage rates increase even when the Bank of England has not announced an immediate increase in Bank Rate.

The situation could affect a large number of households over the coming years.

The Bank of England’s July 2026 Financial Stability Report indicated that a little over five million households could experience higher mortgage repayments by the end of 2028 as existing deals expire and borrowers refinance. (LBC)

For an individual household, even a relatively small change in the mortgage rate can make a significant difference.

Consider a simplified example of a homeowner with a £200,000 repayment mortgage and 25 years remaining.

At an interest rate of 3%, the monthly repayment would be roughly £948.

At 4%, it would be around £1,056.

At 5%, the repayment would be approximately £1,169.

At 6%, it would rise to roughly £1,289.

These figures are illustrations rather than mortgage quotes, but they show why homeowners coming off older low-rate deals should prepare for the possibility of paying more.

A borrower moving from around 3% to around 5% on that example could see the monthly repayment increase by roughly £220, or more than £2,600 over a year.

The impact can become even larger for households with bigger mortgages.

On a £300,000 repayment mortgage over 25 years, the difference between a 3% and 5% interest rate would be roughly £330 a month using the same simplified calculation.

That additional expense has to come from somewhere in the household budget, which could mean less money available for savings, energy bills, food, transport and other everyday costs.

Homeowners approaching the end of their fixed period therefore have several things worth checking.

First, find the exact date the current fixed deal ends. This should be shown on the mortgage documents or online mortgage account.

Next, check the outstanding mortgage balance and the remaining term.

Homeowners can then look at what their existing lender is offering. Many lenders offer existing customers a new mortgage product without requiring them to move to another bank or building society.

However, staying with the same lender should not automatically be assumed to be the cheapest option.

Comparing remortgage deals elsewhere can reveal whether another lender offers a better overall package.

Borrowers should compare more than the advertised interest rate. Arrangement fees, valuation costs, legal fees, cashback, incentives and early repayment charges can all affect the true cost.

People should also check whether their current mortgage has an early repayment charge before switching ahead of the end date.

For some homeowners, paying an early repayment charge to leave a deal early would wipe out any potential saving from moving to a cheaper mortgage.

Another question is whether to choose a two-year or five-year fixed mortgage.

A two-year fix provides certainty for a shorter period and allows the borrower to reconsider the market sooner. However, the homeowner may need to go through the remortgage process again relatively quickly and potentially pay another product fee.

A five-year fix provides longer protection against changes in mortgage rates, but the borrower could remain locked into the deal if rates later fall substantially. Leaving early may also trigger an early repayment charge.

There is no single option that is right for every household.

Someone planning to move home soon could have very different needs from a homeowner who expects to remain in the same property for another decade.

Homeowners who are unsure about their choices may therefore want to consider speaking with a regulated mortgage adviser who can look at their circumstances and explain the available options.

The important message is not to panic because mortgage rates have risen.

It is to prepare.

Mortgage rates can change quickly. A deal available today may be withdrawn or repriced tomorrow, while rates could also fall again if economic conditions change.

Nobody can know with certainty where mortgage rates will be several months from now.

However, homeowners can control when they start preparing.

If your fixed mortgage is due to end in the coming months, check the date, find out what you currently owe, look at the rate you are paying and compare it with the deals currently available.

Doing this early gives you more time to understand what your next monthly payment could look like and prepare your household budget before the old fixed rate disappears.

With millions of UK households expected to refinance mortgages over the next few years, the difference between an old fixed deal and a new mortgage rate could become one of the biggest changes to some families’ monthly expenses.

For homeowners, knowing what is coming before the fixed deal ends could make that transition much easier to manage.