UK Business Loan Interest Rates Explained
Business loan interest rates in the UK depend on your lender type, loan structure, security offered, and your company's credit profile. Rates range from around 6% APR for well-secured bank loans to 40% or more for short-term unsecured facilities. Understanding how rates are set helps you compare offers accurately and negotiate better terms.
How lenders set your interest rate
Lenders price business loans by adding a risk margin on top of their own cost of funds, which is influenced by the Bank of England base rate, currently 4.50% as of 18 March 2026. The margin reflects the perceived risk of lending to your specific business, so two companies applying for the same product on the same day can receive very different rates.
Key inputs to a lender's pricing model include your company's trading history, annual turnover, net profit margin, sector, existing debt obligations, and whether you are offering security. A director with a strong personal credit history will also improve the risk assessment, particularly for smaller loans where a personal guarantee is standard.
Fixed rates versus variable rates
A fixed rate stays the same throughout the loan term, giving you predictable monthly payments and making cash flow forecasting straightforward. A variable rate moves in line with a reference rate, typically the BoE base rate or SONIA, meaning your payments can rise or fall during the term.
Most term loans from challenger banks and alternative lenders quote a fixed annual or monthly rate, expressed as a factor cost or APR. High street bank facilities, particularly revolving credit facilities and overdrafts, more commonly use variable rates tied to base rate plus a margin. If you are borrowing over three or more years, a fixed rate reduces your exposure to future rate increases, though you may pay a small premium for that certainty.
Rate ranges by product type
Different loan products carry materially different rate ranges, so comparing a merchant cash advance to a secured term loan on headline rate alone is misleading. The table below gives indicative ranges as of mid-2026; your actual offer will depend on your specific profile and the lender's current appetite.
Secured term loans from high street banks sit at the lower end of the market because the lender holds a charge over assets and faces less loss if a business fails. Unsecured loans shift that risk onto the lender, so they charge more. Short-term working capital products such as invoice finance and merchant cash advances can carry high effective APRs even when the advertised factor rate looks modest, because the repayment period is short.
What your credit profile does to your rate
Your credit profile is one of the two or three biggest influences on the rate you are offered, and improving it before you apply is one of the most practical ways to reduce borrowing costs. Lenders look at both business credit data from agencies such as Experian Business, Creditsafe, and Dun and Bradstreet, and personal credit data for directors.
Negative markers that push rates up include county court judgements, late filed accounts at Companies House, outstanding HMRC liabilities, and previous defaults or restructures. Positive factors that reduce your risk score include a clean payment history with suppliers, strong retained earnings on your balance sheet, at least two full years of filed accounts, and low existing leverage. If your most recent accounts are more than ten months old, some lenders will ask for management accounts to bridge the gap.
Security and guarantees: their effect on pricing
Offering security, whether a first charge over property, a debenture over business assets, or a personal guarantee, directly reduces the rate a lender will quote because it lowers their expected loss in a default scenario. The reduction is not always stated explicitly in the offer, but it is present in the pricing model.
A personal guarantee on its own, without any asset charge, typically moves a lender from treating the loan as purely unsecured to applying a moderate risk discount. A first legal charge over commercial property can bring rates close to those of a fully secured mortgage product. If you are weighing whether to offer a guarantee to secure a lower rate, consider the exposure carefully. The FCA expects lenders to explain the implications of personal guarantees clearly, and you are entitled to take independent legal advice before signing.
Comparing offers: APR, factor rate, and total cost
When you receive multiple loan offers, comparing them on APR gives the most consistent basis for evaluation because APR accounts for the interest rate, fees, and the timing of repayments. A low headline rate with a high arrangement fee can easily result in a higher total cost than a slightly higher rate with minimal fees.
Some alternative lenders quote a factor rate, typically expressed as a decimal such as 1.25, rather than an APR. To find the total repayable amount, multiply your loan amount by the factor rate: a £50,000 loan at 1.25 means you repay £62,500 regardless of how early you settle. Factor rate products do not reduce their cost if you repay early, which is an important distinction. Always ask for the APR, the total amount repayable, and any prepayment penalty before signing any agreement.
Negotiating a better rate
Negotiation is more feasible than many business owners assume, particularly with challenger banks and brokers who have discretion on margin. Going into a conversation with competing offers from two or more lenders is the most effective lever you have.
Beyond competing quotes, you can improve your position by offering a shorter loan term, which reduces lender risk; providing up-to-date management accounts alongside filed accounts; offering additional security; or demonstrating a strong existing banking relationship. Reducing the loan amount to only what you need also helps, as a lower loan-to-value or lower leverage ratio makes the credit case cleaner. If you are using a broker, ask them explicitly whether they can request a rate reduction from the lender, and ask what commission they receive so you can assess whether their recommendation is independent.
| Product type | Typical APR range (mid-2026) | Secured or unsecured | Rate type |
|---|---|---|---|
| High street bank secured term loan | 6% to 12% | Secured | Fixed or variable |
| Challenger bank unsecured term loan | 10% to 30% | Unsecured (PG often required) | Fixed |
| Asset finance (hire purchase) | 7% to 18% | Asset-secured | Fixed |
| Invoice finance | 15% to 40% effective APR | Debtor book security | Variable |
| Merchant cash advance | 30% to 80% effective APR | Unsecured | Factor rate |
| Commercial mortgage | 5.5% to 9% | Property-secured | Fixed or variable |
Step-by-step
- Check your business and personal credit reports before approaching any lender, and correct any errors with the relevant credit reference agency.
- Establish how much you need and for how long, as a tighter loan request with a clear purpose reduces perceived risk.
- Gather your last two years of filed accounts, three to six months of business bank statements, and recent management accounts if your filed accounts are more than nine months old.
- Approach at least three lenders or use a whole-of-market broker to generate competing offers.
- Compare all offers on APR and total amount repayable, not on headline rate alone.
- Negotiate on margin, fees, or term length using competing quotes as leverage before accepting any offer.
Example
A manufacturing company in the East Midlands with £1.8m turnover applied for a £120,000 unsecured term loan and received an initial offer at 22% APR. The finance director obtained a second offer from a challenger bank at 18% APR and used it to return to the first lender. The first lender reduced their rate to 17.5% APR and waived the arrangement fee, saving approximately £9,400 over the three-year term.
Frequently asked questions
What is a typical interest rate on a UK business loan in 2026?
Rates vary widely depending on the product and your business profile. Secured term loans from high street banks typically start around 6% to 8% APR, while unsecured loans from challenger banks commonly range from 10% to 30% APR. Short-term products such as merchant cash advances can carry effective APRs well above 30%. Always compare on total cost, not just the headline rate.
Does the Bank of England base rate affect my business loan rate?
It depends on whether your loan is fixed or variable. Fixed-rate loans are priced at the point of agreement and do not change when the base rate moves. Variable-rate products, including many overdrafts and revolving credit facilities, are typically priced as base rate plus a margin, so they will move when the BoE adjusts the base rate. The current base rate is 4.50% as of 18 March 2026.
Can I negotiate the interest rate on a business loan?
Yes, particularly with challenger banks and when you have competing offers. Providing a second or third quote from another lender gives you a concrete basis for negotiation. Offering additional security, reducing the loan amount, or shortening the term can also improve your risk profile and support a lower rate. High street banks have less pricing discretion at branch level, though a relationship manager may be able to refer the case for a rate review.
What is a factor rate and how does it compare to APR?
A factor rate is a decimal multiplier applied to your loan amount to calculate the total repayable sum, commonly used by merchant cash advance providers. For example, a factor rate of 1.30 on a £40,000 advance means you repay £52,000 in total. Unlike APR, a factor rate does not account for the time value of money and does not reduce if you settle early. APR is a more useful comparison tool across different products.
Will offering a personal guarantee reduce my interest rate?
In most cases, yes. A personal guarantee reduces the lender's expected loss in a default scenario, which is reflected in their risk pricing. The rate reduction for a guarantee alone, without an asset charge, is typically modest. Offering a charge over property alongside a guarantee can produce a more significant reduction. Before offering a personal guarantee, make sure you understand the full extent of your liability and consider taking independent legal advice.
Does my business credit score affect the rate I am offered?
Yes, it is one of the primary factors lenders use to set pricing. A strong business credit score, reflecting clean payment history, no county court judgements, and well-maintained Companies House filings, will typically result in a lower rate. Lenders also review director credit scores, particularly for smaller loans. Checking and improving both your business and personal credit profiles before applying is one of the most cost-effective ways to reduce borrowing costs.
By Oliver Mackman, Director, Best Business Loans Ltd. Last reviewed 2026-06-22.