TL;DR: A second charge mortgage (sometimes called a homeowner loan or second mortgage) is a loan secured against a property in addition to the existing first charge mortgage. Rates are typically higher than first charge mortgage rates because the second charge lender takes second priority in the event of repossession. Pricing depends on the loan-to-value (combined first and second charge as a percentage of the property value), the borrower's credit profile, the term, the loan size and the lender's risk model. Second charge mortgages are FCA-regulated under MCOB and require the same kind of affordability assessment as a first charge mortgage. They are usually compared with remortgaging the existing loan, an unsecured personal loan or further advance from the existing lender.
Last reviewed May 2026
A second charge mortgage is a regulated loan secured against a property that already has a first charge mortgage in place. The borrower retains the original first charge mortgage on its existing terms and adds a second loan on top, secured against the same property. The lender holding the second charge takes second priority in the event of default and forced sale, after the first charge lender has been repaid.
Second charge mortgages are typically used by borrowers who need to raise capital but for whom remortgaging the first loan is unattractive (for example, because the first mortgage is on a favourable fixed rate or has a high early repayment charge). They sit between mainstream mortgages and unsecured personal loans in terms of pricing and risk.
This guide explains how second charge mortgage rates are set, the factors that drive pricing, the regulation that applies, and the alternatives a borrower would normally compare them with.
What a second charge mortgage actually is
A second charge mortgage is a loan secured by a second priority charge against a residential property. The first charge lender (the original mortgage provider) keeps its existing security and is paid back first if the property has to be sold to recover debts. The second charge lender is paid only after the first charge has been satisfied.
This priority order matters because it is the basis on which the second charge lender prices its loan. The second charge lender bears more risk than the first charge lender (less of the property value is "available" to repay it after the first charge is paid out) and prices accordingly.
The loan can be used for any lawful purpose, although in practice it is most often used for home improvements, debt consolidation, paying tax bills, or funding a deposit on another property. The funds are paid to the borrower at completion and the second charge is registered against the title at the Land Registry.
What drives the rate offered
Several factors drive the rate offered on a second charge mortgage. The largest is the combined loan-to-value (CLTV), which is the total of the first charge balance and the proposed second charge as a percentage of the property's current market value. Lenders typically offer the lowest rates at low CLTVs (say 60 percent or less) and increase the rate as CLTV rises towards their maximum, which can be 75, 85 or even higher percent depending on the lender.
The borrower's credit profile is the second major factor. Borrowers with clean credit and stable income receive better rates than those with adverse credit history or recent missed payments. Some second charge lenders specialise in adverse-credit lending and price their loans accordingly.
Other factors include the loan term (longer terms reduce the monthly payment but typically increase the total interest paid), the loan size (larger loans may attract better rates within a particular product), the type and location of the property, and the borrower's intended use of the funds (some uses are seen as lower risk by lenders).
How second charge rates compare with the alternatives
Second charge mortgage rates are typically higher than first charge mortgage rates from mainstream lenders, because the second charge lender takes second priority. They are usually lower than equivalent unsecured personal loan rates for the same amount, because the loan is secured against the property.
For a borrower with a substantial sum to raise, the natural comparators are: remortgaging the existing first charge mortgage at a new rate (potentially with a further advance), taking a further advance from the existing lender (effectively a top-up of the existing first charge), a second charge mortgage from a separate lender, an unsecured personal loan, or releasing equity from the property through a lifetime mortgage (for older borrowers).
The second charge route typically wins when the existing first charge is on a particularly favourable rate that would be lost on remortgage, when the existing first charge has a substantial early repayment charge, or when the borrower's circumstances mean the existing lender will not advance the additional sum on acceptable terms.
Regulation: MCOB and Consumer Duty
Second charge mortgages on residential properties have been regulated by the Financial Conduct Authority since 21 March 2016 under the Mortgage Conduct of Business sourcebook (MCOB). Before that date, second charge mortgages on residential property fell under the Office of Fair Trading and the Consumer Credit Act 1974. The transition brought second charge mortgages within the same broad framework as first charge mortgages.
MCOB requires lenders to carry out an affordability assessment that considers the borrower's income and committed expenditure, applying a stress test for possible future interest rate rises. The assessment also considers the borrower's existing first charge mortgage and any other secured borrowing.
The Consumer Duty, which came into force in July 2023, requires lenders to deliver fair value to consumers and to support good outcomes. It applies to second charge mortgages as it does to first charge mortgages. Second charge brokers and lenders must be authorised by the FCA; the register entry can be checked at the FCA Financial Services Register.
The cost of a second charge beyond the headline rate
The headline interest rate is only one element of the total cost. Second charge mortgages can carry arrangement fees, valuation fees, broker fees and legal costs that need to be added to the total expense. Some of these can be added to the loan; some are payable upfront.
The APRC (annual percentage rate of charge) is the headline measure that includes the interest rate plus most fees. It is required by FCA rules to be quoted in the Key Facts Illustration provided to the borrower. APRC allows direct comparison between products on a like-for-like basis.
Early repayment charges can apply if the second charge is repaid in full before the end of an initial period. The terms vary by product. Borrowers should note the early repayment terms when comparing offers, particularly where they may want to remortgage or move within the early repayment period.
The application and underwriting process
The application process for a second charge mortgage typically involves the borrower providing income evidence (payslips, tax returns or accounts), bank statements, ID verification and details of the existing first charge mortgage. The lender obtains a valuation of the property, which can be a desktop or AVM valuation for some loans or a physical valuation for others.
The first charge lender's consent to the second charge is normally required, although in many cases it is given as a matter of course unless the borrower's overall affordability would be compromised. The first charge lender may also require its own checks on the borrower's continuing ability to meet the first charge mortgage payments.
Completion times vary. A simple second charge with a clean credit profile and a desktop valuation can complete within a few weeks; complex cases with a physical valuation, adverse credit, or first charge consent issues can take longer. Independent regulated mortgage advice is normally appropriate for any material second charge.
Disclaimer: This article is general information about second charge mortgages and the factors that affect the rate offered. It is not personal mortgage, financial or legal advice. Rates and terms vary by lender, by borrower circumstances and by current market conditions. Anyone considering a second charge mortgage should compare the alternatives (including remortgage, further advance and unsecured borrowing), obtain quotes from authorised lenders or brokers, and take regulated mortgage advice. Your home may be repossessed if you do not keep up repayments on a mortgage.
Frequently asked questions
What is a second charge mortgage rate?
A second charge mortgage rate is the interest rate offered on a loan secured by a second priority charge against a property that already has a first charge mortgage. Rates depend on the combined loan-to-value, the borrower's credit profile, the loan term and size, and the lender's product range. Rates are typically higher than first charge mortgage rates and lower than unsecured personal loan rates.
Why are second charge mortgage rates higher than first charge rates?
The second charge lender takes second priority if the property has to be sold to recover debts. The first charge lender is paid back first; the second charge lender receives only what is left after that. The additional risk is reflected in a higher rate compared with a first charge mortgage on the same property.
When does a second charge mortgage make sense?
A second charge typically wins when the existing first charge mortgage is on a favourable rate that would be lost on remortgage, when the existing first charge has a substantial early repayment charge, or when the existing lender will not advance the additional sum needed. It is normally compared with remortgaging, a further advance from the existing lender and unsecured borrowing.
Are second charge mortgages regulated by the FCA?
Yes. Since 21 March 2016, second charge mortgages on residential properties have been regulated by the Financial Conduct Authority under the Mortgage Conduct of Business sourcebook (MCOB). Lenders and brokers must be authorised by the FCA, and the loans are subject to the same affordability framework and Consumer Duty as first charge mortgages.
What happens to the second charge if I move?
The second charge is secured against the specific property. If the property is sold, the second charge must be redeemed at completion (out of the sale proceeds, after the first charge is repaid), unless the lender agrees to "port" the loan to a new property, which is not always possible. The terms of the loan set out the position.
How we verified this
The structure of second charge mortgages, the priority order between first and second charges, and the FCA regulation since March 2016 reflect the FCA Handbook (principally MCOB) and the relevant changes brought in by the Mortgage Credit Directive Order 2015. The Consumer Duty applies under PRIN 2A and was introduced in July 2023. The role of the FCA Financial Services Register and the requirement for the APRC in Key Facts Illustrations reflect current FCA rules. The product range and pricing factors described are descriptive of current second charge market practice as documented by lenders, brokers and trade bodies. Specific rates and terms vary by lender and borrower and should be obtained from authorised firms.
