Remortgage Deals UK: Compare Rates and Switch in 2026

2026 is the year the post-pandemic fixed-rate wave expires. Around 1.8 million UK homeowners took 5-year fixed deals at historic lows of 1-2% in 2020-21. Those deals are now maturing - and the mortgage they roll onto next will cost two to three times more in interest unless they act.

This guide covers the remortgage process, current rate benchmarks, when to start, what product transfer means, and what to check before signing a new deal.

Why 2026 is the biggest remortgage year since 2008

UK Finance forecasts 1.8 million fixed-rate mortgage deals will expire in 2026. This cohort is larger than any year since the 2008 financial crisis for one specific reason: the volume of 5yr fixes taken out in 2020 and 2021, when the Bank of England base rate was at its historic low of 0.1% and average 5yr fixed rates were below 2%.

Those borrowers are now rolling off deals at 1.5-2% onto a market where the best equivalent product costs 4.97-5.00%. On a £250,000 mortgage balance over 25 years, this difference amounts to approximately £550-£600 per month in additional repayment. The borrowers who remortgage promptly to a competitive new deal will pay significantly less than those who roll onto SVR by default.

IMLA data shows remortgage gross lending rose 20% in 2025 to £93 billion, and is forecast to grow further in 2026 as the expiry wave peaks. Product transfers - where the borrower stays with the existing lender but switches to a new rate - are heading for a record £250 billion in 2025, according to IMLA.

Product transfer vs remortgage: what is the difference?

A product transfer means switching to a new rate deal with the existing lender, without going through a full application or changing lender. Product transfers are faster, involve less paperwork and typically do not require a new affordability assessment or valuation. They are the right choice when the existing lender's rates are competitive and the borrower does not want to borrow more or change the mortgage structure.

A full remortgage means switching to a different lender. This involves a new application, affordability checks, credit search and usually a valuation. A remortgage is appropriate when another lender offers materially better rates, when the borrower wants to borrow additional funds, or when the loan-to-value has improved sufficiently to access a lower LTV band.

In 2026, with 72+ lenders active in the UK market, the rate difference between a product transfer and the best available remortgage deal can be significant. A whole-of-market broker can compare both options and quantify the difference before any commitment is made.

When should remortgaging begin?

Most lenders allow a new mortgage rate to be locked in up to six months before the current deal expires, with completion set to coincide with the end of the existing fix. This means borrowers whose deals expire in December 2026 should begin comparing rates from June 2026 onwards.

Starting early has no downside. If rates fall before completion, most lenders allow the rate to be switched to a lower product within the reservation window. If rates rise, the locked rate is protected. The risk of starting late is rolling onto SVR by default, which in 2026 means rates of 7-8.5% with most major lenders.

The FCA MLAR (June 2026) shows remortgage share of gross advances at 29% in Q2 2025, the highest level since Q1 2024, confirming that the remortgage market is already active and competitive ahead of the 2026 expiry peak.

What affects the rate available when remortgaging?

Three factors have the most influence on the remortgage rate a borrower can access. Loan-to-value (LTV) is the most significant: a borrower at 60% LTV (40% equity) accesses materially lower rates than one at 85% LTV. If property values have risen since the original purchase, LTV may have improved substantially, potentially opening access to a better rate band.

Credit profile is the second factor. A clean credit record with no missed payments, low credit utilisation and no recent credit applications gives access to the full market. Any adverse credit history - CCJs, defaults, missed mortgage payments - restricts access to specialist lenders who price for that risk.

Income and affordability is the third factor. Lenders stress-test affordability at a rate above the product rate (typically base rate plus a buffer). If income has changed materially since the original mortgage, this may affect how much can be borrowed on the new deal.

The cost of doing nothing: SVR in 2026

Borrowers who miss their remortgage window roll onto their lender's Standard Variable Rate automatically. SVRs across major UK lenders in June 2026 range from approximately 7.0% to 8.5%. This compares to the best available 2yr fixed at around 4.97-5.14% for a borrower with 25% equity.

On a £200,000 outstanding balance over 20 remaining years, moving from a 5.14% fix to a 7.5% SVR increases the monthly repayment by approximately £243, equivalent to £2,916 per year. For borrowers with larger balances, the cost is proportionally higher. The SVR premium represents pure unnecessary expenditure while the borrower is deciding what to do next.

Frequently asked questions

How much could remortgaging save in 2026?

The saving depends on the current deal, outstanding balance and the rate available on the new deal. As a benchmark: moving from a 7.5% SVR to a 5.14% 2yr fix on a £200,000 balance over 20 years saves approximately £243 per month or £2,916 per year. On a £350,000 balance the saving is approximately £425 per month.

Can remortgaging be done without a broker?

Yes. Borrowers can approach lenders directly and many lenders offer online applications. However, a whole-of-market broker has access to rates and products not available direct, and under FCA Consumer Duty rules must demonstrate their recommendation is in the borrower's best interest. For most borrowers, using a broker - particularly for a remortgage where the loan size is significant - adds value that typically exceeds the broker fee.

What documents are needed to remortgage?

A standard remortgage application requires proof of identity, proof of address, last three months payslips (or two to three years accounts for self-employed), last three months bank statements, details of the existing mortgage including remaining balance and monthly payment, and the property address. The lender will conduct an independent valuation.

Does remortgaging affect credit score?

A full remortgage to a new lender involves a hard credit search, which appears on the credit file and may temporarily reduce the credit score slightly. Multiple applications in quick succession leave multiple hard searches. A product transfer with the existing lender typically uses a soft search that does not affect the credit score.

What is an early repayment charge (ERC)?

An early repayment charge (ERC) is a penalty charged by the lender if the mortgage is repaid before the end of the fixed term. ERCs are typically 1-5% of the outstanding balance, declining over the fix period. Remortgaging before the fixed term ends triggers an ERC. Most borrowers remortgage at the end of the fix to avoid this charge.