With around 1.8 million UK fixed-rate mortgage deals due to expire in 2026, many homeowners are weighing up whether to remortgage in full or raise additional funds through a second charge mortgage instead. With the Bank of England base rate held at 3.75% since the July 2026 decision, the gap between the two options has narrowed compared with periods of sharper rate divergence, making it worth understanding when a second charge is genuinely the better route.
What Is a Second Charge Mortgage?
A second charge mortgage (sometimes called a secured loan) is a separate loan secured against your property, sitting behind your existing first mortgage. Your first lender retains priority in the event of repossession and sale, and the second charge lender is repaid from any remaining proceeds. Since 2016, second charge mortgages secured on a residential property have been regulated by the Financial Conduct Authority as regulated mortgage contracts, bringing them broadly into line with first charge mortgages in terms of affordability assessment and consumer protection.
When a Second Charge Can Make Sense
- You are on an attractive existing rate. If your current first mortgage rate is materially below current market rates, remortgaging the whole balance to release additional funds means losing that rate on the entire loan, not just the amount you want to raise. A second charge lets you keep the first mortgage untouched.
- Early repayment charges apply. If your current deal carries an ERC, a full remortgage before the fixed period ends can be expensive. A second charge avoids triggering it.
- Your circumstances have changed. Self-employed income, a change of employment, or a lower credit score since your last mortgage can make a full remortgage harder to achieve at a competitive rate, whereas second charge lenders often take a more flexible view of complex income.
- You need funds quickly. Second charge completions can often be faster than a full remortgage, which matters where funds are needed for a time-sensitive purpose such as a property purchase, business investment or tax bill.
When a Remortgage Is Usually Better
If your current deal has ended or is close to ending, and current remortgage rates are at or below your existing rate, a full remortgage onto a new deal (potentially with additional borrowing built in) is usually simpler and cheaper than running two secured loans in parallel, since you avoid paying two sets of fees and two rates. It is also worth comparing the total cost over the period you intend to hold the borrowing, not just the headline rate, as second charge rates typically carry a premium over first charge pricing.
Common Uses for Second Charge Borrowing
We commonly see second charge mortgages used for home improvements and extensions, consolidating higher-cost unsecured debt, raising a deposit for a second property, funding a business, or covering a tax liability. Debt consolidation in particular should be approached carefully: converting unsecured debt into borrowing secured against your home increases the risk attached to non-payment, even where the monthly cost is lower.
What Lenders Assess
As with a first charge mortgage, second charge lenders assess affordability based on income, outgoings and existing commitments (including the first charge payment), the loan to value across both charges combined, credit history, and the purpose of the loan. Maximum combined LTV varies by lender and product but is commonly capped in the region of 75–85%, with pricing increasing as combined LTV rises.
How Giles Finance Can Help
We assess both options side by side — full remortgage versus second charge — based on your existing rate, ERC position, borrowing purpose and overall financial circumstances, and place the case with whichever lender and product genuinely represents better value once fees and total cost are accounted for.
YOUR HOME MAY BE REPOSSESSED IF YOU DO NOT KEEP UP REPAYMENTS ON YOUR MORTGAGE OR ANY LOAN SECURED AGAINST IT. Second charge mortgages secured on your home are regulated by the Financial Conduct Authority. Where debt consolidation is being considered, converting unsecured debt into secured borrowing increases the risk to your home if repayments are not maintained. Where tax implications arise from raising or using the funds, you should seek advice from a qualified tax adviser, as this article does not constitute tax advice.
To compare your remortgage and second charge options, visit our Secured Loans page or contact our team.
Giles Finance is a trading style of Giles Finance & Consultancy Services, authorised and regulated by the Financial Conduct Authority (FRN 726857).