Remortgaging isn't just about finding a better interest rate — it can also be an opportunity to release equity tied up in your home and borrow additional funds at the same time. Whether you're looking to fund home improvements, consolidate debt, or cover a significant expense, raising capital when you remortgage is a route many homeowners in the UK explore. But it's not without its conditions, costs, and considerations. Here's everything you need to know.

To borrow more money when remortgaging, lenders will assess your application in much the same way they did when you took out your original mortgage — only this time, they'll also take into account how much equity you have in your property.

Sufficient equity in your home. Most lenders require you to retain a minimum level of equity after any additional borrowing — usually at least 10–15% of the property's value. The more equity you have, the more flexibility you'll have when it comes to how much you can release.

Proof of income and affordability. Lenders will want to see that you can comfortably afford the higher monthly repayments that come with a larger loan. Expect to provide recent payslips, bank statements, and — if you're self-employed — 2 years of accounts or tax returns. Lenders will run the normal affordability and credit checks on your application for a remortgage just like they do with a purchase application.

A satisfactory credit history. Your credit score will be reviewed as part of the application. A history of missed payments, defaults, or high levels of unsecured debt could limit your options or result in a higher interest rate.

The property must be valued appropriately. Lenders will instruct a valuation of your home to confirm it's worth what you believe it to be. If property prices in your area have fallen since you bought, this could affect how much you're able to borrow. Lenders will attempt to carry out an online valuation to save time and cost, if this is successful, they won’t need a physical valuation. If they cannot gather enough data for your property online, they will instruct a physical valuation at a time and date that suits you.

A clear purpose (in some cases). While many lenders don't require you to specify exactly what you'll do with the extra funds, some may ask — particularly for larger sums.

The approved reason for additional borrowing includes:

Home improvements – structural and non structural

Debt consolidation – up to a limit

To purchase additional property

To pay for school fees

To purchase other assets such as a car.

The amount you can borrow on top of your existing mortgage balance depends on several factors working together.

Your loan-to-value (LTV) ratio is the most significant factor. This is the percentage of your home's value that your mortgage represents. For example, if your home is worth £300,000 and you have £150,000 remaining on your mortgage, your current LTV is 50%. Most lenders will allow you to borrow up to 85–90% LTV depending on the reason for capital raising, which in this example could mean releasing up to £105,000–£120,000 in additional borrowing (subject to affordability).

Your income will place a practical cap on how much any lender is willing to offer. Most lenders will loan up to 4.5x your annual salary (or combined household income for joint applications), though this varies between providers.

Your age and remaining mortgage term also play a role. If you're closer to retirement, lenders may be more cautious about extending the size of your debt, and some will require the mortgage to be repaid before a certain age. Most lenders cap lending to a maximum age of 70.

As a rough guide, the typical minimum for additional borrowing is around £10,000, though some lenders set this higher. There's no universal maximum, but most borrowers are limited by their LTV and affordability rather than any fixed ceiling.

It's worth speaking to a whole-of-market mortgage broker who can compare deals across multiple lenders and identify the best option for your specific circumstances.

Borrowing more when you remortgage can have a direct impact on the interest rate you're offered — and it's not always straightforward.

Higher LTV can mean a higher rate. Mortgage rates are banded by LTV. The lower your LTV, the less risk the lender takes on, and the better the rates they're typically willing to offer. If your additional borrowing pushes you from, say, a 60% LTV band into a 75% or 85% band, you may find the rates available to you are noticeably higher.

Your overall payment will increase. Even if the interest rate itself stays broadly similar, you'll be paying interest on a larger loan amount — so your monthly repayments and the total interest paid over the life of the mortgage will both rise. It's important to model this carefully before committing.

Fixed vs variable rates. When you remortgage, you'll typically choose between a fixed rate (where your payments stay the same for an agreed period) or a variable rate (which can rise and fall with the market or the lender's standard variable rate). If you're concerned about future rate rises, locking in a fixed rate at the point of remortgaging can provide peace of mind.

The current interest rate environment matters. If rates have risen significantly since you took out your original mortgage, you may find that even without additional borrowing, your new rate is higher than what you're currently paying. Adding extra borrowing on top of that could make the overall deal considerably more expensive.

Always use a mortgage comparison tool or speak to an adviser to calculate the true cost of borrowing before making a decision.

Releasing equity through a remortgage isn't free, and it's important to factor all associated costs into your calculations to make sure the deal genuinely works in your favour.

Early repayment charges (ERCs). If you're still within a fixed or discounted rate period on your current mortgage, your lender may charge you a fee for leaving early. These can be substantial — often between 1% and 5% of your outstanding loan balance — so it's essential to check the terms of your existing deal before proceeding and aiming to complete the remortgage the day after your current fixed rate ends to avoid this charge.

Arrangement or product fees. Some remortgage deals come with an arrangement fee, sometimes called a product fee, which can range from a few hundred pounds to over £1,000. Some lenders allow you to add this to your mortgage balance, though this means you'll pay interest on it over the life of the loan.

Valuation fees. Your new lender will require a valuation of your property. Some lenders offer free valuations as part of their remortgage deals; others will charge you separately, typically between £150 and £1,500 depending on the property's value. But most lenders offer this service for free as an incentive.

Legal fees. Remortgaging involves legal work — transferring the mortgage from one lender to another and registering the new charge. Many lenders offer free legal work as an incentive, but if yours doesn't, expect to pay a conveyancer between £300 and £800. Some lenders who don’t offer a free legal service offer a cashback alternative to contribute to some of that cost.

Broker fees. If you use a mortgage broker (which is advisable, especially when raising capital), they may charge a fee for their services. Some brokers are fee-free and earn their income through commission from lenders; others charge a flat fee or a percentage of the loan.

Exit fees. Some lenders charge a small administrative fee when you close your existing mortgage with them, sometimes called a deeds release fee or mortgage exit fee. These are typically modest — around £50 to £300 — but worth checking for.

When adding everything up, it's not unusual for the total costs of remortgaging to reach several thousand pounds. That said, if the deal reduces your interest rate or gives you access to funds you need, it can still represent excellent value over the long term. A broker can help you weigh up the true cost versus the benefit before you commit.

If you are looking to release equity from your home for whatever reason and want to calculate your borrowing needs and find the right lender contact us today. We would love to help you.

.