Understanding When to Remortgage: Practical Scenarios and What to Consider

Remortgaging isn’t only about chasing a lower rate. It’s often the next practical step when your current deal changes, your circumstances shift, or your property value moves you into a different loan-to-value (LTV) band.

Below are the main reasons borrowers remortgage, and what to consider in each scenario.

For the full picture — how remortgaging works, what it costs and how timing affects the outcome — read our complete guide to remortgaging.

Your current deal is coming to an end?

If your fixed, tracker or discounted period is nearing its end, your mortgage will usually then move onto your lender’s standard variable rate (SVR). Unless you take action with a product switch or remortgage.

What this means for you

• You may be able to secure a new rate and structure before your current term ends.
• Planning ahead can help avoid a period where you’re paying SVR while you decide.
• Your lender may offer options, but it’s worth comparing alternatives so you’re not automatically moved onto the most expensive route.

Timing You can typically start the process six months before your current mortgage rate ends. This is often when your current lender allows you to secure a new rate and is typically how long mortgage offers last if a 3rd party mortgage lender has a better offering. It also gives time for affordability checks, paperwork and any valuation requirements.

You’re on your lender’s Standard Variable Rate (SVR)?

You may be on an SVR for a few reasons, such as your deal ending, choosing not to switch, or needing to stay put.

What to review

• Whether you can move off SVR onto a new fixed or other deal type.
• How changes in your finances since taking the mortgage affect what you can borrow and the likely cost.
• Whether there are any additional costs to consider, such as early repayment charges if you’re leaving a product before the end of its term.

Even if you’ve had credit issues in the past or your income has changed or you're planning to sell the home soon, it can still be worth reassessing options. Different lenders have different criteria and offerings.

You want to borrow more?

Remortgaging can sometimes be a route to raise additional funds, particularly if your home has built up equity or your affordability has improved.

Common reasons include:

• Debt consolidation
• Home improvements
• Raising funds for a new buy-to-let property
• Let-to-buy
• Business Investment
• General capital raising

Key considerations

• Lenders typically have specific views on acceptable purposes and how much additional borrowing they’ll allow.
• Borrowing more can increase your LTV, which may affect the interest rate available.
• If you’re currently tied into a deal, you may need to consider whether a further advance with your existing lender is possible, or whether switching to a new product is more cost-effective.

Borrowing extra can make sense where the mortgage rate is competitive, and the repayment plan is manageable. However, it can also increase the overall amount you repay over the longer term—particularly if you extend the mortgage term or borrow a larger balance.

Your property value has increased (lower LTV)

If your home’s value has risen since you took out your mortgage, your LTV may now be lower than it was when you first applied. A lower LTV can open up access to different mortgage product ranges.

Why LTV matters

• LTV is a key factor lenders use when pricing mortgages.
• Moving into a lower LTV band can improve the chances of securing a more competitive rate.

What to check

• Whether the current balance on your mortgage and the latest property valuation place you in a more favourable LTV band.
• How changes to your income, outgoings or credit profile may affect affordability and product availability.

You want a more flexible mortgage

Your circumstances may have changed since you first took out your mortgage. You might have more savings than before, have better income, have better credit, want to make larger payments, or prefer a mortgage structure that gives you more control.

A remortgage can give you access to different features, such as:

• Higher or unlimited overpayments (depending on the product)
• Different repayment options (where available)
• Offset-style structures where savings can be linked to the mortgage balance to reduce interest (subject to the product terms)

Flexible mortgages can be helpful if you expect to pay extra at certain times, or if you want to reduce interest by using savings more effectively.

It’s important to compare like for like. Some flexible features may come with a slightly higher rate than the cheapest “standard” deals. The value of flexibility depends on whether you’re likely to use the features in practice.

Key point: flexibility is only worthwhile if it matches how you actually manage your finances.

Remortgage deals by loan-to-value

Your loan-to-value (LTV) is the relationship between your mortgage balance and your property's current value, and it's the single biggest factor in which remortgage rates you'll see. As you pay down your mortgage and (often) as your property value rises, your LTV can improve, unlocking better deals.

Use the tabs below to compare today's lowest true-cost remortgage deals across different LTV bands.

What to consider before you remortgage

While the reason you’re remortgaging may be specific, the decision is usually influenced by a few common factors:

• Affordability: your income and committed outgoings can affect what you can borrow and the products you can access.
• Costs: early repayment charges, valuation fees and legal costs can all influence whether switching is worthwhile.
• Mortgage structure: the term length and deal type (for example, fixed vs tracker) can change your monthly payments and risk profile.
• Future plans: if you expect to move or make major changes soon, the best option may differ from what suits a longer stay.

Key point: the “best” remortgage is the one that makes financial sense after all costs—not just the one with the lowest headline rate.