Remortgage Guide UK 2026: How and When to Switch

Remortgaging

switching your mortgage to a new deal with your current lender or a new one, usually to get a better interest rate or release equity.

Standard variable rate, SVR

the lender's default rate after a fixed or tracker deal ends. It is usually higher than a new fixed deal and can change when the lender chooses.

Early repayment charge, ERC

a fee for leaving your current mortgage deal before it ends, often a percentage of the outstanding balance, which can make switching mid deal costly.

Product or arrangement fee

a one off charge on the new mortgage deal, sometimes added to the loan rather than paid upfront.

Loan to value, LTV

your mortgage balance as a percentage of the property value. A lower LTV usually unlocks a better rate, as explained in our LTV explained guide.

Use the remortgage calculator to compare your current payment with a new deal after fees, then check monthly costs in the mortgage calculator. Your LTV band affects the rates you can access, so see the LTV calculator before you compare deals.

What remortgaging is

Remortgaging means replacing your existing mortgage with a new one. You can stay with the same lender, which is often called a product transfer, or move to a different lender. Most people remortgage to get a lower interest rate, especially when a fixed or tracker deal is about to end.

It is not the same as taking out a second mortgage or equity release. You are switching the main loan on your home. The new lender pays off the old mortgage at completion, and you then repay under the new terms.

When to remortgage

The most common trigger is a fixed or tracker deal ending. If you do nothing, you usually move onto your lender's standard variable rate, which is often higher than the deal you had. Remortgaging before or at that point can keep your monthly payment lower.

Other reasons include releasing equity by borrowing more against your home, consolidating debt, or switching to a deal with better flexibility. Switching mid deal can make sense if the rate saving clearly beats any early repayment charge and product fee, but that is less common while ERCs apply.

The remortgage process step by step

The remortgage process follows a predictable sequence. Allow four to eight weeks from starting your application to completion, though timing varies by lender and how quickly legal work is handled.

1. Check your current deal and end date. Find out when your fixed or tracker period ends, whether an early repayment charge applies, and what your revert-to rate would be.
2. Check your loan to value. Work out your LTV from your balance and an estimate of your property value. A lower LTV opens up cheaper rate bands.
3. Compare deals. Use comparison sites, a broker, or direct lender quotes. Compare the rate, fees, and tie in period, not just the headline rate.
4. Apply. Submit a full application with proof of income, bank statements, and details of your existing mortgage.
5. Valuation. The new lender arranges a surveyor to confirm the property value. Many remortgage deals include a free valuation.
6. Legal work. A solicitor or licensed conveyancer handles the legal switch. Many remortgage products include free legal work.
7. Completion. The new lender repays your old mortgage and your repayments continue on the new deal from the agreed date.

The costs

Remortgaging is not free, even when the new rate is lower. The main costs to factor in are:

Add any extra costs to the product fee field in the remortgage calculator if you want them in your comparison. A deal with a slightly higher rate but no fee can beat a lower rate with a large upfront charge on smaller loans.

When it might not be worth it

Remortgaging is not always the right move. It may not be worth switching if:

• Your outstanding balance is small, so the monthly saving is tiny relative to fees
• An early repayment charge is large and you are still mid deal
• The rate difference is only small and would take many years to recover the switching costs
• You plan to sell the property soon, so the upfront cost outweighs short term savings

Run the numbers in the remortgage calculator before you apply. If the net saving over your comparison period is negative after fees and ERC, staying put or doing a product transfer with your current lender may be better.

Remortgaging to release equity

Some homeowners remortgage to borrow more than their current balance and release cash from the property. Common uses include home improvements, paying off other debt, or helping family with a deposit.

The pros are access to a lump sum at mortgage rates, which are usually lower than unsecured borrowing, and a single monthly payment. The cons are a larger loan, more interest over the term, and stricter affordability checks. Your LTV rises, which can mean a higher rate band.

Lenders will stress test the higher borrowing against your income and outgoings, similar to a new purchase mortgage. Use the mortgage calculator to see how a larger loan affects your monthly payment before you apply.