Remortgaging in the UK 2026: Timing, Costs and Pitfalls

When to start the process

Begin actively six months before your current deal ends. A mortgage offer is typically valid for six months, so you can lock in today's rate while keeping the option to switch if rates fall further. If they rise, you keep the lower offer; if they fall meaningfully, you can usually re-apply.

Set a calendar reminder for the end-date minus seven months. Lenders and brokers get progressively busier through the year, and rushing the application in the final weeks risks defaulting onto SVR — currently 7 to 9 percent at most lenders, often double the best fixed rates.

Product transfer vs full remortgage

A product transfer is staying with your existing lender on a new rate. It is fast (often days), needs no new affordability check or valuation, and costs nothing or very little. The downside is you only see your current lender's rates, which may not be competitive.

A full remortgage moves the loan to a new lender. It involves a fresh affordability assessment, valuation, conveyancing and legal work, but typically gives access to materially better rates if your loan-to-value has dropped or your circumstances improved. Use a broker to compare both options on the same screen.

The real costs of switching

Switching costs typically include: a product fee (£0 to £1,499, sometimes £1,999), a valuation fee (often free or refunded on remortgages), legal fees (often free under a basic remortgage conveyancing package or £300 to £600 for full service) and any broker fee (£0 to £999).

Always compare the total cost over the fixed period, not just the headline rate. A 4.2 percent rate with a £999 fee may beat a 4.0 percent rate with a £1,999 fee on a small mortgage but lose on a large one. Most online comparison tables do this maths for you — just verify the period length matches.

Watch out for early repayment charges

Most fixed-rate deals carry an Early Repayment Charge of 1 to 5 percent of the outstanding balance if you switch before the deal ends. On a £200,000 mortgage that can be £6,000 to £10,000 — usually enough to wipe out any saving from remortgaging early.

Time your application so completion happens within the final month of your existing deal. Lenders allow you to lock in a new rate up to six months ahead specifically so the dates line up. If you're unsure, your broker will check the ERC end-date against the new lender's valid-offer window.

Broker vs direct vs comparison sites

A whole-of-market broker sees the entire market plus some broker-exclusive deals; they cost £0 to £999 and earn commission from lenders. Going direct to your existing lender is fastest but limits you to their rates. Comparison sites are useful for ballpark research but rarely show every product or assess your specific circumstances.

For most remortgages, a fee-free or low-fee broker pays for itself many times over in saved rate and avoided pitfalls. Use direct only if you've already done the comparison legwork and your existing lender's offer is genuinely competitive.

Frequently asked questions