How to Remortgage: A Step-by-Step Guide for UK Homeowners

Remortgaging — switching your mortgage to a new deal — is one of the easiest ways to save money. If you're on your lender's Standard Variable Rate (SVR), you're almost certainly overpaying. This guide walks you through the process.

When to Remortgage

The most common trigger is the end of a fixed-rate period. When your 2, 5, or 10-year fix ends, you revert to the SVR — typically 2-4% higher than the best fixed deals. Start shopping for a new deal 3-6 months before your fix ends, so the new mortgage starts the day after the old one ends.

Other triggers: your property has increased in value (lower LTV = better rates); you want to overpay more than your current deal allows; you want to borrow more for home improvements; or you're unhappy with your current lender's service. If you're still in a fixed period, check the ERCs before switching — they can wipe out the saving.

How to Remortgage

Step 1: Check your current deal. What rate are you on? When does it end? Is there an ERC? Contact your lender or check your mortgage statement.

Step 2: Get quotes. Use a whole-of-market broker to compare deals from every lender. Their service is usually free. Or compare directly on comparison sites.

Step 3: Apply. Once you've chosen a deal, submit the application. The new lender will value your property (many include a free basic valuation) and assess your affordability. Most remortgages complete in 4-8 weeks.

Step 4: Complete. The new lender pays off your old mortgage and sets up the new one. Your monthly payment changes to the new rate. Most remortgages include free legal work, so you don't need to hire a conveyancer.

How Much Can You Save?

On a £200,000 mortgage over 25 years, the difference between an SVR of 7.99% and a 5-year fix at 4.99% is about £380/month — £22,800 over 5 years. Even after a £999 product fee, the saving is £21,800. If you're on an SVR and haven't remortgaged, you're leaving thousands of pounds on the table. Use our Remortgage Calculator to see your exact saving.

Early Repayment Charges: The Switching Tax

Most fixed, tracker, and discount deals charge an early repayment charge (ERC) if you repay the mortgage during the deal period — and remortgaging counts as repaying. ERCs are typically structured as a percentage of the outstanding balance that declines each year of the deal: a 5-year fix might charge 5% in year one, 4% in year two, down to 1% in year five, then zero. On a £200,000 balance, year-one exit costs £10,000 — which is why nobody remortgages mid-fix without a very specific reason. Two escape hatches exist: most deals allow overpayments of about 10% of the balance per year without penalty, and moving home usually lets you port the mortgage to the new property instead of paying it off. The golden rule: the moment your deal's ERC window ends, you're free — and that's exactly when the SVR trap starts, so book the replacement deal before the fix expires, not after.

The SVR Trap and Rate-Triggered Remortgages

The Standard Variable Rate is your lender's default rate once any deal ends — typically several percentage points above the best available fixes, and the lender can move it at any time, loosely tracking the Bank of England base rate. The 2022-2023 rate-rising cycle pushed a record number of borrowers off cheap fixes onto sharply higher SVRs, and the pain was entirely avoidable: a fixed deal reserved 3-6 months before expiry starts the day the old one ends, with no SVR period in between. Even in a falling-rate environment the logic holds — you're not trying to time the market perfectly, you're avoiding the guaranteed-worst rate on the shelf. If your fix ends soon and rates are expected to fall, a shorter tracker or a 2-year fix keeps flexibility; if stability matters more, a 5-year fix removes the decision for longer.

Fees, Affordability, and Product Transfers

Compare deals on total cost over the deal period, not headline rate: a low-rate deal with a £1,499 fee can cost more over 2 years than a slightly higher rate with no fee. The fee can usually be added to the mortgage balance — convenient, but you then pay interest on it for years. Expect an affordability re-check under FCA rules even when switching lenders with the same balance; stress-testing against rate rises is standard, so a deal you could afford five years ago isn't guaranteed today. One shortcut worth knowing: a product transfer — switching to a new deal with your existing lender — skips the full application, valuation, and legal work, which makes it faster when your equity or circumstances make a new-lender remortgage awkward. The trade-off is you only see your own lender's shelf, and loyalty is rarely the cheapest option — always price the open market before taking the easy path.