How to Remortgage: UK Remortgage Guide 2026

Remortgaging means moving your mortgage to a new deal before your current one ends, either with a new lender or your existing one. Start around six months before your deal ends, compare the total cost rather than the headline rate, and you avoid sliding onto your lender’s standard variable rate.

If your mortgage deal is ending, you may be able to change to a new rate with your current lender or move your mortgage to another lender. The right decision depends on much more than the advertised interest rate.

This guide explains when to start, the steps involved, the costs and checks, and what has changed for borrowers in 2026. It also covers when not to remortgage.

What is remortgaging?

A remortgage normally means replacing your existing mortgage with a new mortgage from another lender, without moving home. Switching to a new deal with your existing lender is usually called a product transfer. Both are worth considering before an introductory fixed, tracker or discounted deal ends.

The aim may be to manage monthly payments, change the mortgage term or repayment type, or borrow more. A lower monthly payment does not necessarily mean a lower total cost, especially if you extend your mortgage term.

What has changed for remortgaging in 2026?

UK Finance’s December 2025 forecast anticipated around 1.8 million fixed-rate mortgage deals ending in 2026, compared with approximately 1.6 million in 2025. These are industry forecasts, not an estimate of your personal options.

FCA rules on switching lenders

Changes introduced in 2025 allow lenders, in certain circumstances, to apply a modified affordability assessment when an existing borrower remortgages without increasing the borrowing and the new deal is more affordable under the applicable rules. This is an option for lenders, not a right to approval, and individual lenders decide whether and how to use it. Read the FCA’s mortgage rule changes (PS25/11) and the FCA Handbook.

Mortgage Charter options

Under the government’s Mortgage Charter, participating lenders made commitments to support eligible residential mortgage customers, including the ability to arrange a new deal ahead of expiry and, for eligible customers up to date with payments, switch to interest-only payments for six months, or extend the term with the option to return to the original term within six months, without a new affordability assessment. Check your lender’s participation and the conditions. Lower payments now can increase interest paid later. See the FCA Mortgage Charter data.

These provisions do not mean every mortgage customer can switch early without charges, nor do they guarantee a new mortgage offer.

Timing your remortgage

A useful starting point is three to six months before your existing deal ends. This gives time to compare rates, fees and lender requirements. Many lenders let existing customers secure a new deal up to six months before the current one ends. Others have shorter windows, and offer validity, product changes and fees vary.

Check your mortgage statement or online account for the outstanding balance, current interest rate, deal expiry date, repayment type, remaining term and any early repayment charge (ERC). Ask what happens when the current deal ends.

You may wish to switch sooner if your circumstances have changed, but an ERC can outweigh any savings. Read our guide to when to remortgage and remortgaging with an early repayment charge.

Which situations do lenders see most?

These are illustrative situations, not Option Finance client outcomes.

Should you stay with your lender or switch?

A product transfer with your current lender can be simpler, particularly if you are not borrowing more. It may involve less documentation and no separate conveyancing, although lender procedures differ. Your choice is limited to that lender’s products.

A remortgage with another lender can widen the available options, but typically involves new underwriting, property checks and legal work. A lender’s lower headline rate may be outweighed by fees or switching charges.

Compare both options using the total cost over the period you expect to keep the deal, including mortgage balance at the end of that period. Our remortgage versus product transfer guide explains the differences in detail.

How to remortgage: step by step

1. Review your current deal. Check the expiry date, mortgage balance, remaining term and any ERC or exit fee.
2. Check your budget and property value. Your income, outgoings, credit profile and estimated property value affect your options.
3. Compare your current lender and alternatives. Consider product transfers and remortgages, including all fees.
4. Prepare documents. A new lender may require identity documents, bank statements and income evidence. Requirements vary.
5. Apply to the chosen lender. The lender considers affordability, credit history, property suitability and its own criteria.
6. Arrange valuation and legal work. A new lender may arrange a valuation. The conveyancer handles redemption of the existing mortgage and registration of the new charge.
7. Complete at the appropriate time. Check the completion date against any ERC expiry and confirm when your new repayments begin.

A mortgage illustration or agreement in principle is not a formal mortgage offer.

How long does a remortgage take?

A product transfer with your current lender may be arranged within days once you have selected a deal, depending on its processes. A remortgage to another lender typically takes several weeks because it can involve underwriting, valuation and legal work.

Timescales vary. Additional borrowing, self-employed income, title issues and non-standard property construction may lead to extra checks. Do not assume a particular completion date until the lender and conveyancer have confirmed progress.

What will switching cost you?

Potential charges include a new lender’s product or arrangement fee, valuation fee, conveyancing costs, broker fee where applicable, your existing lender’s exit fee and any ERC. Some deals include a standard valuation or assisted legal work. Read the exclusions carefully.

Illustrative comparison: Suppose the new deal reduces monthly payments by £70 for 24 months, but switching costs £1,200. The simple payment difference is £70 × 24 = £1,680, leaving £480 after those costs. This is not a guaranteed saving or a complete mortgage-cost comparison: the outstanding balance, interest paid, remaining term and repayment structure also matter.

A low-fee product can sometimes cost less overall than a lower-rate product with a large arrangement fee. See remortgage costs and fees and our remortgage calculator.

Can you remortgage to borrow more or release equity?

You may be able to borrow additional money secured against your property, subject to lender criteria, affordability and the proposed use of the funds. Increasing borrowing can increase monthly payments and total interest.

LTV example: A property valued at £300,000 with a £180,000 mortgage has a 60% loan-to-value ratio. Increasing the mortgage by £30,000 would make the balance £210,000, or 70% LTV, before fees. These are illustrative figures, not a real client case or a lender’s lending limit.

Could a lower LTV band get you a better rate?

Mortgage products are often priced by LTV bands. If your balance is just above a threshold, a permitted overpayment could potentially move you into a lower band. Check any overpayment limits or ERCs first. A new property valuation may also change the LTV in either direction, and a lower band does not guarantee a lower overall cost.

Remortgaging to consolidate debts

Consolidating credit cards or loans into a mortgage may lower monthly outgoings, but it converts unsecured debt into borrowing secured on your home. Repaying the debt over a longer mortgage term can mean paying more interest overall. Read our debt consolidation remortgage guide.

What if your circumstances have changed?

Remortgaging when self-employed

A new lender may ask for business accounts, SA302 tax calculations and tax year overviews, as well as bank statements. Limited company directors may be assessed on salary, dividends or company profits, depending on lender criteria. Your existing lender’s product transfer rules may be different. See remortgaging when self-employed.

Remortgaging with bad credit

Defaults, missed payments or other adverse credit can affect lender choice and pricing. Eligibility depends on the circumstances and lender criteria. Read our bad credit remortgage guide.

Adding or removing someone from the mortgage

Changing the borrowers, often as part of a transfer of equity, may require affordability checks, legal work and lender consent. The title ownership and mortgage arrangements must be considered together. A product transfer alone does not necessarily change ownership.

Remortgaging after separation or divorce

If one person wants to retain the home, the lender must assess whether the proposed borrowers can afford the mortgage. Ownership, court orders and any existing mortgage obligations may require separate legal advice. Do not assume removing someone from the title automatically releases them from the mortgage.

Remortgaging a buy-to-let property

Buy-to-let remortgages are assessed differently from residential mortgages, often with emphasis on rental income, property type and landlord circumstances. Most buy-to-let mortgages are not regulated by the FCA, although consumer buy-to-let is treated differently. See buy-to-let mortgage advice and our buy-to-let remortgage guide.

Switching from interest-only to repayment

Changing to a repayment mortgage means paying down the capital as well as interest, which usually increases the monthly payment compared with interest-only on otherwise equivalent terms. Check affordability and the remaining term.

Non-standard construction or low equity

Unusual construction, lease terms, property condition or a low valuation can restrict lender choice. Negative equity can make moving to another lender difficult. Ask your existing lender about product transfers where available.

Fixed, tracker or variable mortgage?

A fixed rate provides certainty about the interest rate during the fixed period. A tracker rate follows a specified reference rate, usually plus a margin. Other variable rates can change under their product terms. Compare fees, ERCs, overpayment flexibility and whether you could afford payments if rates rose.

When remortgaging may not be worth it

Switching may not make financial sense if an ERC outweighs the benefit, fees cancel out the advantage of a lower rate, you expect to sell soon, or a change in mortgage term increases the long-term cost. Sometimes a product transfer, or waiting until an ERC period ends, is more suitable.

A mortgage adviser should explain why a recommendation fits your circumstances rather than simply highlighting the lowest advertised rate.

Common remortgage mistakes to avoid

• Waiting until after the current deal ends without checking what rate follows.
• Comparing interest rates without checking fees, ERCs and the balance remaining after the deal period.
• Assuming a product transfer is always better or always worse than changing lenders.
• Extending the mortgage term solely to reduce monthly payments without considering total interest.
• Taking new credit or changing employment without checking the effect on a pending application.
• Assuming every lender will accept your income, property or borrowing purpose.

Frequently asked questions about remortgaging

Speak to Option Finance about your remortgage

We can review your current deal, any charges for leaving, your plans and the options available through our lender panel. We will explain the costs and whether a product transfer or remortgage is appropriate.

Request a remortgage consultation or use the enquiry form below.

Important: Product availability and eligibility depend on individual circumstances.