Fixed-Rate Mortgages
A fixed-rate mortgage locks your interest rate for an agreed period, so your monthly payment stays exactly the same regardless of what happens to wider interest rates – the dominant choice for UK homeowners, and worth understanding properly before you commit to a specific term.
Why Fixed-Rate Is the Most Common Choice by Far
Around 85% of UK mortgages are currently on a fixed rate, according to industry data, making it genuinely the default choice for most homeowners rather than a niche preference. The appeal is straightforward: complete certainty over your monthly payment for the length of your deal, regardless of what the Bank of England base rate does in the meantime.
How a Fixed-Rate Mortgage Actually Works
When you take out a fixed-rate mortgage, your lender agrees to charge a specific interest rate for a set period, commonly 2, 3, 5, or occasionally 10 years, with a small number of newer lenders now offering considerably longer fixes. During that period, your rate cannot change, and neither can your monthly payment, even if the Bank of England base rate rises significantly or your lender’s own rates move.
Why Longer Fixes Usually Cost More
Generally, the longer your fixed period, the higher the rate you’ll be offered. This reflects genuine uncertainty for the lender – predicting where interest rates will sit five or ten years from now is considerably harder than predicting the next two years, so lenders build in a premium to compensate for that extended risk. It’s worth weighing this cost against how much you genuinely value long-term certainty.
Choosing Between a 2-Year and a 5-Year Fix
A 2-year fix offers the most flexibility, suiting borrowers who expect to move again relatively soon, want to actively review the market regularly, or simply aren’t ready to commit to a longer term. A 5-year fix suits those planning to stay put for a while and who value the security of knowing their payment won’t change for a genuinely meaningful stretch of time, generally accepting a somewhat higher rate in exchange for that extended certainty.
What Happens When Your Fixed Term Ends
Once your fixed period expires, your mortgage automatically moves onto your lender’s Standard Variable Rate unless you actively arrange a new deal beforehand. The SVR is almost always considerably more expensive than a competitive fixed or tracker rate, so it’s worth reviewing your options well ahead of your fix ending, rather than drifting onto it by inertia. Our Product Transfer page covers switching to a new rate directly with your existing lender, and our Remortgage page covers moving to a new lender entirely – both genuinely worth comparing before your current fix expires.
Worked Example
Consider a £200,000 repayment mortgage over 25 years, fixed for 3 years at 5%, giving a monthly payment of around £1,169. If you then moved onto an SVR of 7.5% for the remaining 22 years without remortgaging, your payment would jump to roughly £1,450 a month – a genuinely significant increase, illustrating why reviewing your options before your fix ends matters considerably.
Early Repayment Charges
If you want to leave your fixed-rate deal before the term ends – to remortgage, move home without porting, or repay the mortgage entirely – you’ll typically face an Early Repayment Charge, commonly 3-5% of the outstanding loan. It’s worth checking your specific mortgage’s ERC schedule before making any decision that might trigger it, since this cost can be substantial on a larger mortgage balance.
Overpayment Allowances
Most fixed-rate mortgages let you overpay up to a certain amount each year, commonly around 10% of the outstanding balance, without triggering an Early Repayment Charge, though this genuinely varies by lender and it’s worth confirming your specific allowance. Overpaying within this limit can meaningfully reduce your total interest cost over the life of the mortgage.
Fixed vs Tracker vs Variable: The Genuine Trade-Off
A fixed rate protects you entirely from rate rises during your term but means you won’t benefit if rates fall. Our Tracker Mortgages page covers a genuinely different structure that moves directly with the Bank of England base rate rather than staying fixed, and our Variable-Rate Mortgages page covers discount and Standard Variable Rate products, worth comparing all three properly against your own risk tolerance and expectations for where rates are heading.
Who a Fixed Rate Tends to Suit Best
Fixed-rate mortgages are particularly popular with first-time buyers who value predictable budgeting, single-income households with less financial buffer to absorb a payment rise, and anyone remortgaging away from a variable rate specifically to avoid future uncertainty. If your finances genuinely couldn’t absorb a meaningful payment increase, the certainty a fixed rate provides is worth its premium.
How Your Credit Profile Affects the Rate You’re Offered
The strength of your credit history genuinely affects which fixed rates you can access, with stronger credit profiles typically unlocking more competitive pricing. It’s worth checking your credit report before applying, and addressing any easily fixable issues, since this can meaningfully affect the rate you’re ultimately offered.
Looking Beyond the Headline Rate
The advertised interest rate is only part of the true cost – arrangement fees, valuation fees, and product fees all factor into the genuine total cost of a fixed-rate deal, and a lower headline rate with high fees can sometimes work out more expensive overall than a slightly higher rate with lower fees. It’s worth comparing the full cost across the fixed term, not just the rate itself, when weighing up different deals.
Fixing Ahead of a Purchase or Remortgage
Some lenders allow you to secure, or “reserve,” a fixed rate ahead of your actual completion date, useful if you’re concerned rates might rise before your purchase or remortgage goes through. It’s worth discussing this option with your broker if you’re working to a longer timeline and want some protection against rate movements in the meantime.
Frequently Asked Questions
How long can I fix my mortgage rate for?
Commonly 2, 3, 5, or 10 years, with a small number of specialist lenders now offering considerably longer fixed terms.
What happens if I want to leave my fixed deal early?
You’ll typically face an Early Repayment Charge, commonly 3-5% of the outstanding loan, though this varies by lender and specific mortgage terms.
What rate will I move to once my fixed term ends?
Your lender’s Standard Variable Rate, unless you arrange a new deal beforehand – the SVR is almost always considerably more expensive than a competitive fixed or tracker rate.
Can I overpay on a fixed-rate mortgage?
Most lenders allow overpayments up to around 10% of the balance each year without an Early Repayment Charge, though this varies by lender.
Is a fixed rate always more expensive than a tracker?
Not necessarily – it depends on the specific deals available and where rates are heading; worth comparing both genuinely rather than assuming one is automatically cheaper.
Get in touch with details of your circumstances and how long you’re likely to stay in the property, and we’ll help you understand whether a fixed rate, and which specific term, genuinely suits you.
