Your Fixed Rate Is Ending — A UK Remortgaging Checklist for 2026/27
What to do in the six months before your fixed-rate mortgage deal ends, including the standard variable rate trap and how to compare a product transfer against a full remortgage.
The Six-Month Window
Mortgage lenders typically allow borrowers to secure a new rate up to six months before their current fixed or tracker deal expires, and many will let you reserve that rate without committing to it immediately, switching later if a better offer appears before completion. Missing this window and letting the deal simply expire means an automatic move onto the lender's standard variable rate (SVR) — a rate that carries no early repayment charge but is usually priced well above any competitive fixed deal, sometimes costing hundreds of pounds more a month on a typical mortgage balance.
Product Transfer vs Full Remortgage
| Factor | Product transfer (stay with current lender) | Full remortgage (switch lender) |
|---|---|---|
| Affordability re-check | Often skipped or lighter-touch | Full new assessment required |
| Legal work | Usually none | Conveyancing typically needed |
| Property valuation | Often not required | Usually required |
| Access to whole market | No — your lender's rates only | Yes |
| Speed | Faster, less paperwork | Slower, more documentation |
| Ability to release equity or borrow more | Limited | Full flexibility |
A product transfer suits borrowers whose circumstances haven't changed much and who want a quick, low-friction switch to avoid the SVR. A full remortgage is worth the extra effort if your income, credit profile or the property's value has improved since you last borrowed, or if a genuinely better rate is available elsewhere — the admin cost is usually worth it if the rate difference is meaningful over the life of the new deal.
Why Loan-to-Value Still Matters
Mortgage rates are priced in loan-to-value (LTV) bands, and your LTV can shift even if you haven't borrowed more, simply because property values move and your mortgage balance has been paying down. Falling into a lower LTV band (for example, moving from 85% to 75% LTV as the balance reduces and the property has held or gained value) can unlock a noticeably better rate; conversely, a fall in the property's value can push you into a higher LTV band with a worse rate, or limit remortgage options to your existing lender if a new lender's valuation comes in lower than expected.
What to Have Ready
Both routes are faster with the same basic paperwork sorted in advance — recent payslips or (for the self-employed) two to three years of accounts or SA302s, three to six months of bank statements, proof of any other income, and details of existing debts. Lenders' affordability calculations also take account of current interest rates and any new lending regulation changes, so an application that would have passed comfortably a couple of years ago is not guaranteed to pass now on the same income, particularly if other borrowing has increased.
A Practical Timeline
- Six months before deal ends: check your current lender's product transfer rates and get a whole-of-market comparison
- Gather income evidence and recent bank statements
- Get an informal valuation estimate if you think your LTV band may have shifted
- Compare the total cost (rate plus any fees) of the top two or three options over the deal period, not just the headline rate
- Lock in a rate before your current deal ends to avoid the standard variable rate
Use the calculator below to compare your current mortgage payment against a range of new rates, and to see how extra overpayments before your fixed rate ends could reduce your remortgage balance.
Frequently asked questions
How far in advance should I start looking at remortgage options?
Most lenders let you lock in a new rate up to six months before your current deal ends, and rates can typically be reserved without a fee that far out. Starting the search around six months ahead gives time to compare product transfers against a full remortgage and to get a new offer in place before you roll onto your lender's standard variable rate, which is usually substantially more expensive than any fixed deal.
What is a product transfer and how does it differ from a full remortgage?
A product transfer means switching to a new rate with your existing lender without changing the underlying mortgage — it typically involves less paperwork, no new affordability assessment in many cases, and no legal work, but it also means you don't shop the whole market for a better deal. A full remortgage moves the mortgage to a new lender, requires a fresh affordability check and (usually) a property valuation, but can unlock a meaningfully cheaper rate or let you release equity.
What happens if I do nothing when my fixed rate ends?
You are automatically moved onto your lender's standard variable rate (SVR), which is usually several percentage points higher than a competitive fixed or tracker rate. There is no cliff-edge penalty for this beyond the higher monthly cost, but it can mean paying hundreds of pounds a month more than necessary while a cheaper deal was available.
Can I remortgage if my property value has fallen since I bought it?
You can still remortgage, but a lower loan-to-value headroom (because the property is now worth less relative to the mortgage balance) can push you into a higher LTV band with a worse rate, or in a negative-equity scenario, can limit your options to a product transfer with your existing lender rather than a move to a new one. Getting an up-to-date valuation estimate before applying avoids an unwelcome surprise partway through the process.
Try the calculators
Remortgage Calculator
Compare your current mortgage deal with a new rate to see monthly savings, total interest saved, and whether remortgaging makes sense.
Mortgage Overpayment Calculator
See how much you save in interest and how much earlier you can pay off your mortgage with regular overpayments. Plus ERC warnings.
Related reading
Remortgaging Before Your Fix Ends: When Does Paying the ERC Make Sense in 2026?
Paying an Early Repayment Charge to exit a high-rate fix early can save thousands — if the maths work. Here's the break-even calculation, current 2026 market rates, and when to wait instead.
Mortgage Porting Explained — Moving House Without Losing Your Rate 2026/27
How porting a mortgage works when moving house in the UK, when it saves on early repayment charges, and what happens if you need to borrow more for 2026/27.
Offset Mortgage vs a Savings Account — Which Saves More in 2026/27?
How an offset mortgage compares to keeping savings in an easy-access account or Cash ISA once savings interest tax is factored in for 2026/27.