Around 1.8 million fixed-rate mortgage deals are set to expire in the UK during 2026, creating a natural wave of refinancing activity that will affect homeowners across the country. That figure from industry forecasts for 2026 means millions of households will soon face a decision: accept whatever their lender offers by default, or shop around for something better. I’ve been watching the mortgage market closely for years, and what I notice every time a refinancing wave hits is that the people who prepare early come out ahead, while those who wait until the last minute often end up paying hundreds more per month than they needed to.
The Bank of England cut the base rate to 3.75% at the end of 2025, and further reductions are expected through 2026. That’s good news if you’re refinancing, because lower base rates tend to feed into cheaper mortgage deals. But here’s the catch: lenders are also expected to tighten affordability checks, especially in high-price regions and for borrowers with lower incomes. So while the rate environment is improving, the approval process may get harder. If you’re approaching the end of a fixed-rate deal, the time to start planning is now — not the week before your current rate expires. Here’s what you actually need to know.
One of the smartest moves you can make is to build equity through smart refinancing decisions, and that starts with understanding your options before you’re under pressure to choose. A property lawyer can also help you navigate the legal side of refinancing if your situation involves complex ownership structures or leasehold issues.
What mortgage refinancing actually means in 2026
Refinancing simply means replacing your current mortgage with a new one, either with the same lender (a product transfer) or a different one (external remortgaging). The goal is usually to secure a lower interest rate, reduce monthly payments, or change the terms of your loan. But in 2026, the landscape is shifting in ways that make timing and preparation more important than ever.
What I’d tell anyone asking about refinancing right now is this: don’t assume your current lender will give you the best rate. External remortgaging grew by 17% in 2025 to £71 billion, and it’s forecast to rise another 10% to £77 billion in 2026. That tells me borrowers are increasingly finding better deals by switching lenders. The key is to start comparing offers early — ideally three to six months before your current deal ends — so you have time to weigh your options without rushing.
If you’re unsure about the legal implications of switching lenders, it’s worth reading up on title transfer legalities when buying a house, as similar principles can apply when refinancing a property you already own.
Why refinancing now could save you thousands
The Mortgage Charter, reaffirmed by lenders representing 90% of the market in March 2026, gives borrowers significant protections and flexibilities. One of the most valuable is the ability to lock in a deal up to six months before your current rate ends. That means if you see a rate you like today, you can secure it and still have the option to switch to a better one later if rates continue to fall.
Consider this scenario: your current fixed-rate deal ends in August 2026. Under the Charter, you can lock in a new rate as early as February. If rates drop between February and August, you can request a better like-for-like deal with your lender right up until your new term starts. Rates must be finalised two weeks before the new term begins, so you have a clear window to make your final decision.
Mortgage arrears fell by 12% in 2025 to 92,100 cases, and are forecast to fall another 5% to around 87,500 in 2026. That’s a positive sign — fewer borrowers are falling behind. But possessions edged up to 8,600 in 2025, reflecting a return to normal operations rather than widespread distress. The Charter explicitly states that no lender wants to repossess someone’s home, and repossession is only done as a last resort or when it’s in the borrower’s financial interest.
What I’d do in your position: set a calendar reminder six months before your current deal expires. Start checking rates from multiple lenders at that point. If you find one that works, lock it in. Then keep an eye on the market — if rates improve, you can switch before your new term begins. A financial advisor can help you model different scenarios and decide whether a fixed or variable rate makes more sense for your situation.
For a broader view of how the market is shifting, take a look at insights from local religious leaders on buying a house in the UK, which touches on community perspectives that can inform your financial decisions.
Where homeowners go wrong with refinancing
I’ve seen the same patterns repeat every time a refinancing wave hits. Here are the most common mistakes — and how to avoid each one.
Waiting until the last minute to start shopping
The biggest error is doing nothing until your current deal expires. When that happens, you typically revert to your lender’s standard variable rate (SVR), which is almost always higher than any fixed-rate deal you could have secured. The Charter gives you six months to plan, yet many borrowers leave it until the final weeks. If you’re up to date with payments, 97% of the mortgage market will let you switch without a new affordability check — but only if you act before your deal ends.
Assuming your current lender offers the best rate
Loyalty rarely pays in mortgage lending. Internal product transfers rose to £256 billion in 2025, but external remortgaging grew faster at 17%. That gap suggests borrowers who switch lenders are finding better deals. Don’t accept your lender’s first offer without comparing it against at least two or three competitors. A broker can do this legwork for you, often at no upfront cost.
Ignoring the tightening affordability criteria
Lenders are expected to tighten eligibility checks in 2026, especially in high-price regions and for borrowers with lower incomes. Even if you’ve never missed a payment, you might face stricter scrutiny if your income has changed or your debt-to-income ratio has shifted. Clear income documentation and stable employment are becoming more important. If you’re self-employed or have irregular income, start gathering your tax returns and bank statements now.
Overlooking the buy-to-let exemption
The Mortgage Charter’s protections do not apply to buy-to-let mortgages. If you’re a landlord, you’re on your own when it comes to refinancing. Buy-to-let purchase lending rose by 11% to £11 billion in 2025, and remortgaging grew by 24% to £28 billion. That’s a lot of activity, but without Charter protections, you’ll need to be more proactive about comparing deals and preparing your financial documentation.
→ Scroll right to see all columns
| Metric | 2025 Actual | 2026 Forecast |
|---|---|---|
| External remortgaging | £71 billion | £77 billion (+10%) |
| Internal product transfers | £256 billion | £261 billion (+2%) |
| Mortgage arrears | 92,100 cases | 87,500 cases (-5%) |
| Possessions | 8,600 | 9,400 (modest rise) |
If you’re a landlord navigating these changes, a tenant landlord lawyer can help you understand how refinancing affects your tenancy agreements and legal obligations.
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How to refinance your mortgage in 2026: a practical guide
Here’s the step-by-step process I’d follow if I were refinancing this year. Each step builds on the last, so don’t skip ahead.
Check your current deal’s end date and early repayment charges
Your mortgage statement or online account will show when your current fixed-rate deal ends. Make a note of that date, then check whether your lender charges an early repayment charge (ERC) for switching before the deal expires. ERCs are typically 1% to 5% of the outstanding balance and can wipe out any savings from switching early. If your deal ends within six months, you’re in the safe zone — the Charter lets you lock in a new rate without penalty.
Compare rates from at least three lenders
Don’t rely on your current lender’s initial offer. Use comparison websites, speak to a mortgage broker, and check directly with two or three other lenders. Pay attention to the interest rate, the product fee (some deals charge £999 or more upfront), and whether the rate is fixed or variable. A fixed rate gives you certainty; a variable rate could drop further if the Bank of England continues cutting rates, but it could also rise.
Prepare your financial documents early
Even if you’re switching without a full affordability check, having your documents ready speeds things up. Gather three months of bank statements, your latest payslips (or tax returns if self-employed), proof of identity, and your most recent mortgage statement. If you’re applying with a new lender, they’ll want to see these anyway. Having them ready means you can move quickly when you find a deal you like.
Lock in a rate and keep monitoring
Once you find a deal that works, lock it in. Under the Charter, you can do this up to six months before your current deal ends. Then keep an eye on rates. If a better deal appears before your new term starts, you can request a like-for-like switch with your lender. Rates must be finalised two weeks before the new term begins, so you have a clear deadline for your final decision.
- 1Find your deal end dateCheck your mortgage statement or online account. Set a reminder six months before this date to start shopping.
- 2Compare offersUse a broker or comparison site to check rates from multiple lenders. Don’t accept your current lender’s first offer.
- 3Lock in earlySecure a rate up to six months ahead. You can still switch to a better deal before your new term starts.
- 4Finalise two weeks beforeRates are locked two weeks before your new term begins. Make your final decision by then.
If you’re also thinking about selling your current home as part of your financial plan, you might find the downsizing dilemma and when it’s the right time to sell helpful for weighing your options.
Frequently asked questions about mortgage refinancing
Will refinancing affect my credit score? ▾
Can I refinance if I’m self-employed? ▾
What happens if I don’t refinance before my deal ends? ▾
Does the Mortgage Charter apply to buy-to-let mortgages? ▾
Can I extend my mortgage term to lower payments? ▾
Should I use a mortgage broker or go direct? ▾
If you’re worried about keeping your home secure while you navigate the refinancing process, a home security starter kit can give you peace of mind while you focus on your finances.
Your next move
The 1.8 million fixed-rate deals expiring in 2026 mean you’re far from alone in facing this decision. The Mortgage Charter gives you a six-month window to plan, compare, and lock in a rate without penalty. My advice: set that calendar reminder today, start gathering your documents, and compare offers from at least three lenders before accepting anything. The borrowers who prepare early are the ones who save the most. If this was useful, you might also want to read leasehold vs freehold: what every UK buyer needs to know.
Sources and Further Reading
Service charges explained: tips for buying a home in the UK — A practical breakdown of ongoing costs that can affect your budget when refinancing or buying.
Escape the rat race: buying a rural retreat in the UK — the pros and cons — Explores how location choices affect mortgage options and long-term affordability.
Mortgage Charter 2026. UK Government, 2026.
UK Property Market Outlook 2026. Movera, February 2026.
UK Mortgage Changes Set to Reshape Homebuying in 2026. BankQuality, 2026.
