Should you fix your mortgage or opt for a variable rate?

Following the Bank of England’s first interest rate cut of 2025, homeowners remortgaging this year must choose between the stability of a fixed mortgage or the chance to benefit from future rate cuts on a variable rate deal.

Woman looks at document in her hand as she sits with laptop on kitchen table
Fixed rate mortgage deals offer stability while variable rate deals offer homeowners the chance to benefit from future interest rate cuts.
(Image credit: MoMo Productions via Getty Images)

Millions of homeowners will come to the end of their fixed rate mortgages this year leaving behind some of the lowest mortgage rates ever offered in the UK.

Those who locked into a fixed rate in 2020 or before, with equity of at least 40%, are likely to be rolling off an interest rate of around 2% and facing much higher borrowing costs. Average two-year fixed rates are currently 5.49%, according to financial data firm Moneyfacts, while average five-year fixed rates are 5.30%.

But there is some good news. In February, the Bank of England’s committee of rate setters made the first of what is expected to be several interest rate cuts in 2025, lowering the base rate from 4.75% to 4.5%.

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This gives the 1.8 million homeowners due to remortgage this year, according to UK Finance, food for thought.

In this guide, we look at the things to consider when wondering if you should fix your next mortgage rate or opt for a variable deal.

What is a fixed rate mortgage?

A fixed rate mortgage has an interest rate that is guaranteed to stay the same for the term of your mortgage deal. If you chose a two-year fixed rate at 5% you know with absolute certainty that for the next two years your mortgage rate will be locked in at 5%.

The rate you’re offered depends on several factors such as the amount of equity you have in your home and your credit history.

What is a variable rate mortgage?

If you choose a variable rate mortgage, your rate can vary during the term of your mortgage deal depending on the type of variable mortgage you have picked.

Borrowers opting for a two-year variable rate mortgage, for example, could start off with an interest rate of 5%, see it fall six months later to 4.85% but rise to 5.15% by the end of the two years.

What’s the difference between a tracker, a discount and a Standard Variable Rate mortgage?

There are three types of variable rate mortgage:

  • Tracker mortgage

Trackers are directly linked to the Bank of England base rate and track its movements, either up or down.

If your deal tracks the Bank of England Base Rate (BBR) by +0.50%, your rate is 4.5% plus 0.50% giving you a rate of 5%.

  • Discount mortgage

A discount is applied to the mortgage lender’s standard variable rate (SVR), the default rate all borrowers pay when not in a mortgage deal.

You might be offered a 2% discount off the lender’s SVR of 7% giving you a rate of 5%. If the lender changes their SVR, your rate changes too.

  • Standard Variable Rate (SVR) mortgage

Borrowers not tied into a mortgage deal will pay their lender’s SVR.

According to Moneyfacts, the average SVR is currently 7.78% so hanging around on your lender’s SVR is a costly move.

Fixed vs variable rate mortgage: Pros and cons

Fixed rate mortgages guarantee stability over your monthly mortgage payments making it easier to budget your household finances.

However, if you need to remortgage or repay your loan before the end of your fixed rate you’ll be charged a penalty. You’ll also miss out any decreases in interest rates.

Borrowers on variable rates will take advantage of cuts to interest rates and are more likely to be able to remortgage away from their deal before the end of its term, penalty-free. But, if rates go up so will your monthly payment which can make budgeting tricky.

Are fixed mortgage rates going up or down?

Fixed rates have fallen in early 2025 and more gradual decreases in the cost of borrowing are expected this year if, as anticipated by economists, the Bank of England makes further reductions to the base rate this year.

Adrian Anderson, managing director and mortgage adviser at brokerage Anderson Harris, says: “Fixed-rate mortgages are primarily influenced by swap rates—the rates at which financial institutions lend to each other.

“They increase and decrease depending on various factors including statements from the Bank of England, market anticipations around government policies, and international market tensions. 

“In January economic concerns such as an increase in government borrowing and global economic tensions pushed up swap rates which meant mortgage fixed rates went up.  The markets have since calmed which meant swap rates and mortgage fixed rates fell in early February.”

Furthermore, the Bank of England’s decision to cut the base rate from 4.75% to 4.5% has encouraged some lenders to pass on further cuts.  

“The recent decision to cut the base rate is good news because it should provide lenders with confidence to reduce fixed rates,” adds Anderson.

“However, significant decreases are unlikely as the base rate cut was already priced into many lenders’ current fixed rate offerings.”

Should I fix my mortgage?

That depends on your circumstances.

If you want the certainty of knowing what your rate will be over a set period of time to help you budget then a fixed rate may be right for you.

However, if you’re considering moving or paying a lump sum off your mortgage before your fixed rate expires, you’re likely to be clobbered by hefty early repayment charges. In this case a penalty-free variable rate could be a better option.

How long can you fix a mortgage for?

Two and five-year fixed rates are the most common terms offered by lenders with a more limited selection of three and 10-year fixed deals available.

Two lenders have recently entered the mortgage market with longer term offerings. April Mortgages allows borrowers to fix their mortgage rate for up to 15 years while Perenna offers a fixed rate for the life of a homeowner’s mortgage, up to a maximum of 40 years.

Despite more choice in longer-term fixed rates, five-year fixes remain the most popular term and accounted for 49% of all mortgages taken out in November, according to UK Finance’s latest figures.

Can you remortgage on fixed and variable rates?

Yes, you can remortgage but those on a fixed rate can expect to pay a penalty.

A homeowner fixing their rate for five years, for example, could expect to pay penalty of 5% of their mortgage balance if they remortgaged in year one of their mortgage deal and 1% in year five.

Daniel Bailey, founder of mortgage advice firm Middleton Finance, says: “If you are currently on a fixed deal and you want to remortgage most lenders will have an early repayment charge but it’s always worth checking the terms of your deal.

“Virgin Money, for instance, is offering a fix and switch deal whereby a five-year fixed rate deal comes with a two-year early repayment charge.

“Some variable rate mortgages, such as trackers, are usually penalty-free which means you can remortgage at any time during the term of your tracker deal.”

Is it ever a good idea to remortgage and pay the penalty?

Nick Jones, mortgage sales and marketing director for brokerage of Access FS, says: “If the new rate you’re remortgaging on to is significantly lower, savings over time could outweigh the initial penalty.

“But it’s all down to individual circumstance,” he adds. “To understand the potential savings in the longer term, discuss this with a professional before taking action.”

How to compare mortgage deals

The simplest and safest way to compare mortgage deals is to ask a mortgage broker to do it for you.

But if you want to do it yourself here’s three tips for comparing deals:

Tip one

Work out your loan to value ratio (LTV) of your property by dividing your mortgage balance by the value of your home to compare rates from different lenders in the same LTV range.

Tip two

“Don’t be led just by the rate,” says Middleton. “Consider all the costs such as the arrangement fee and any booking fee associated with a deal. The lowest rate may not be the most cost-effective deal.” Arrangement fees can range from £0 to £1,499. Remember to factor in early repayment charges too.

Tip three

Check out what flexible features you might need. “If there’s a chance you’ll move or need to overpay, check for porting options and overpayment allowances,” says Jones. “Some lenders allow penalty-free overpayments of 10% per year.”

Contributor

Samantha Partington is an award-winning freelance journalist writing about property, mortgages, personal finance and interiors.

Before going freelance she wrote for the Daily Mail's personal finance section and prior to that she was the residential correspondent for real estate business title Property Week. She was also the former deputy editor of trade title Mortgage Solutions.

Before becoming a journalist, Samantha worked as a mortgage broker and is CeMAP qualified. Follow her on Twitter @SamJPartington1.