Is a BTL revolving credit facility a second charge?
22nd May 2026
By Simon Carr
Is a BTL revolving credit facility a second charge?
For UK property investors and landlords looking for flexible ways to fund their portfolios, finding the right financing tool is key. When researching modern funding options, a common question arises: is a btl revolving credit facility a second charge?
The short answer is yes. A Buy-to-Let (BTL) revolving credit facility is a secured financial product that sits behind your existing first-charge mortgage as a second charge. This means you can unlock the equity tied up in your property without having to rewrite or replace your current mortgage agreement.
In this guide, we will break down exactly how this second-charge facility works, how it compares to popular alternatives like bridging loans or remortgaging, and how landlords typically use it to grow their portfolios efficiently.
Understanding Second Charges and Revolving Property Credit
Not quite what you are looking for? Try these:
To understand why this facility is a second charge, it is helpful to look at how property charges work in the UK. When you buy a residential buy-to-let property using a mortgage, the lender registers a “first charge” against the property title. This legal agreement gives the lender first priority to recover their funds if you default on the loan and the property is sold.
A BTL revolving credit facility is secured as a second charge. This means it is a completely separate loan agreement that sits directly behind your existing first mortgage. The provider of the revolving facility accepts a secondary position, meaning they are second in line to recover their funds if the property is liquidated. Because the first mortgage remains completely untouched, you do not have to pay early repayment charges or lose a competitive historical interest rate on your primary loan.
Unlike a traditional lump-sum second charge mortgage, a revolving credit facility functions like a property overdraft. Once the facility is arranged, you are granted a credit limit based on the available equity in your property. You can draw down funds when you need them, repay them when cash flow allows, and draw them down again as your next project arises. You only pay interest on the money you have drawn down, rather than the entire facility limit, which can make it incredibly cost-effective.
Crucially, this is a secured facility. It is not an unsecured business loan, a credit card, or a generic business revolving line of credit. It is tied directly to the value of your residential buy-to-let property or portfolio.
Real-World Scenarios: How Landlords Use a Second-Charge Facility
Because once arranged, funds can typically be drawn in 24-48 hours, a BTL revolving credit facility offers unmatched speed and flexibility. Here are some of the most common ways UK landlords utilise this facility to manage their property businesses:
- Winning at Property Auctions: When buying at auction, you typically need to pay a 10% deposit immediately upon the fall of the hammer, with the remaining 90% balance due within 28 days. A revolving facility allows you to draw down the deposit and completion funds rapidly, securing the deal while you arrange long-term mortgage finance.
- Refurbishment and EPC Upgrades: Improving energy performance certificates (EPC) is a high priority for UK landlords aiming to meet modern standards. Whether it is installing double glazing, updating insulation, or modernising a kitchen to boost rental yield, a revolving facility lets you pay contractors on a flexible schedule.
- Covering Void Periods: If a tenant moves out unexpectedly, your mortgage payments and property maintenance bills are still due. You can draw from the facility to cover these monthly costs and keep your business running smoothly, repaying it once a new tenant is secured.
- Securing Portfolio Expansion Deposits: When an outstanding investment opportunity arises, you can use the revolving line to quickly draw down a deposit for a new property purchase without waiting weeks for a remortgage to go through.
How It Compares to Bridging Finance and Remortgaging
Landlords historically rely on bridging loans or remortgaging to release equity from their properties. However, a second-charge revolving credit facility offers unique advantages over both.
Bridging Loans
Bridging loans are short-term, lump-sum secured loans. They can be structured as either open or closed bridging loans. An open bridging loan has no fixed repayment date but usually must be repaid within 12 to 24 months. A closed bridging loan has a specific, agreed-upon date for repayment, often linked to a guaranteed exit strategy like an impending property sale.
Most bridging loans roll up interest, meaning monthly payments are not typical. Instead, the interest accumulates and is paid in full at the end of the term. While useful, bridging finance is designed for one-off transactions and requires a brand-new application each time you need funds. Furthermore, bridging loans can carry high set-up fees and exit charges.
Your property may be at risk if repayments are not made. If you default on a bridging loan or any secured finance, the consequences can be severe. It could lead to legal action, repossession of the property, increased interest rates, and additional charges.
Remortgaging to Release Equity
Remortgaging involves replacing your existing first mortgage with a larger one to release cash. While this can provide a lump sum, it can be highly inefficient. If you have a low, fixed interest rate on your current mortgage, remortgaging could force you to move your entire balance to a much higher interest rate. Additionally, early repayment charges (ERCs) can make remortgaging prohibitively expensive.
By contrast, a second-charge revolving credit facility leaves your low-rate first mortgage completely untouched. You only pay interest on the exact amount you draw down, offering far greater flexibility and lower long-term costs.
Credit Searches and Application Risks
When applying for a secured second-charge facility, lenders will assess your creditworthiness alongside the equity available in your property. Understanding your credit history is a crucial first step in the planning process.
Get your free credit search here. It’s free for 30 days and costs £14.99 per month thereafter if you don’t cancel it. You can cancel at anytime. (Ad)
While a single missed payment on a credit card does not guarantee automatic rejection, it is important to remember that defaulting on secured loans can have severe consequences, including default marks on your credit file, additional penalty fees, and eventual repossession. You can read more about second charges and how they are regulated through the MoneyHelper advice on second charge mortgages.
People also asked
Is a BTL revolving credit facility an unsecured loan?
No, it is a secured financial product. It is registered as a second charge against your residential buy-to-let property, meaning the lender uses your property as security for the facility.
Do I pay interest on the entire facility limit?
No, interest is only charged on the money you actually draw down. If you have a £100,000 limit but only draw down £15,000 for a refurbishment, you only pay interest on that £15,000.
Can I use a revolving credit facility for auction property purchases?
Yes, this is a very common use. Once the facility is arranged, funds can typically be drawn in 24 to 48 hours, making it ideal for meeting tight auction payment deadlines.
How does a second charge affect my existing first mortgage?
It does not affect your first mortgage at all. Because the facility sits behind your existing loan as a second charge, your original mortgage terms, rates, and early repayment charges remain completely unchanged.
What is the risk if I cannot make repayments on a secured revolving credit facility?
Your property (your home or investment property) may be at risk if you do not keep up repayments. Defaulting can result in legal action, additional penalty charges, damage to your credit score, and potentially the repossession of your property.
Why Partner with Promise Money?
Navigating the complex world of specialist property finance can be challenging. Promise Money is an FCA-authorised broker (Ref: 681423)—not a lender. We work with a comprehensive panel of lenders to help you find the right secured BTL revolving credit facility for your portfolio.
We help you compare the costs against bridging finance and remortgaging to ensure you make the most financially sound decision for your property business. If you would like to discuss your options with an expert advisor, contact our experienced team today on 01902 585020 or visit our main hub at promisemoney.co.uk/landlord-revolving-credit-100.


