Low interest business loans in the UK are offered by high-street banks at representative APRs of 7.1–12.24%, with the government-backed Growth Guarantee Scheme enabling some lenders to provide below-market rates for eligible businesses. Here is how to find the cheapest business finance in 2026 and what genuinely qualifies as “low interest”.
- Representative APRs start from 7.1% - High-street banks offer the lowest rates, with top lenders capping at 12.24% for qualified businesses
- Government-backed loans save up to 40% - Growth Guarantee schemes reduce interest costs significantly compared to standard commercial lending rates
- 9 lenders compared for best rates - Comprehensive analysis reveals which providers offer genuinely competitive APRs for different business profiles
- Credit scores below 650 face 15%+ rates - Poor credit history dramatically increases borrowing costs, making rate shopping essential
- Secured loans beat unsecured by 3-5% - Providing collateral can substantially reduce APR compared to unsecured business lending options
What Counts as a Low Interest Business Loan?
In 2026, a “low interest” business loan is broadly anything below 10% APR for unsecured borrowing. The cheapest options currently are: Funding Circle (from 6.9% for strong applicants), HSBC (7.1% representative APR), and Santander (7.9% representative APR plus 12 months interest-free). For secured lending or government-backed facilities, rates can fall further – sometimes to 5–7% for the strongest credits.
What constitutes “low interest” is relative to the Bank of England base rate (4.75% as of March 2026) and the risk profile of the borrower. A 7% APR for an SME business loan represents a spread of approximately 2.25 percentage points above base – competitive by historical standards for unsecured commercial lending. Rates below 5% for unsecured business loans are effectively only available through government-subsidised or charity-backed schemes.
Lowest APR Business Loans: UK 2026 Comparison
The lowest available representative APRs from mainstream UK lenders are: Funding Circle (6.9%), HSBC (7.1%), Santander (7.9%), TSB (9.9%), Barclays (11.2%), and NatWest/RBS (12.24%). For businesses that cannot access bank finance, Funding Circle offers the most competitive alternative – though its undisclosed completion fee adds to the total cost.
| Lender | Rep. APR | Loan Range | Notable Cost Feature | Key Catch |
|---|---|---|---|---|
| Funding Circle | From 6.9% | £10K–£750K | No early repayment fee | Undisclosed completion fee; min £10K |
| HSBC | 7.1% | £1K–£25K | No arrangement fee | Early repayment penalty applies |
| Santander | 7.9% + 12 months interest-free | £2K–£25K | No arrangement fee; interest-free year | Santander business account required |
| TSB | 9.9% | £1K–£1M | Highest loan ceiling for fixed rate | £250 arrangement fee |
| Barclays | 11.2% (8.5% for £15K–£25K) | £1K–£100K | No early repayment fee; startups accepted | Higher rate for loans under £10K |
| NatWest / RBS | 12.24% | £1K–£100K | No arrangement or early repayment fees | Highest bank APR in table |
Source: ExpertSure research, verified March 2026. Representative APR applies to at least 51% of approved applicants. Your rate may differ based on creditworthiness, loan amount, and trading history.
Government-Backed Low Interest Business Loans
The Growth Guarantee Scheme (GGS), launched July 2024, allows accredited lenders to offer below-market rates to businesses that may not qualify for standard commercial terms. Lenders including Santander, NatWest, Lloyds, and Barclays participate. Loans from £25,001 to £2,000,000 are available on 3-month to 6-year terms. The government guarantee covers 70% of the lender’s risk, enabling more competitive pricing.
Government-backed business loan schemes in the UK have evolved through CBILS, RLS, and now the Growth Guarantee Scheme. The current GGS is less generous than COVID-era schemes (CBILS, BBLS) but remains relevant for businesses that cannot access standard bank finance:
- Eligibility: UK-based businesses with annual turnover under £45 million
- Loan sizes: £25,001 to £2,000,000
- Terms: 3 months to 6 years (term loans); up to 3 years (overdrafts and revolving facilities)
- Government guarantee: 70% of the loan – lenders absorb 30% risk
- Accredited lenders: Santander, NatWest, Lloyds, Barclays, TSB, Funding Circle, iwoca, and others
GGS does not set a maximum interest rate – the accredited lender sets its own rate. The practical benefit is access to finance for businesses that would otherwise be declined, not necessarily a significant rate reduction versus standard commercial lending.
Cheap Business Loans: What Actually Reduces Your Rate
The most effective ways to secure a lower rate are: borrow from your existing bank (which already holds your transactional data and has lower risk on you), provide security (secured lending rates are typically 2–4% lower than equivalent unsecured products), borrow larger amounts (many banks apply tiered rates where larger loans carry lower APRs), and use a whole-of-market broker for amounts above £100,000.
Several structural factors reliably reduce the interest rate you are offered on a business loan:
Existing banking relationship. Barclays, NatWest, Santander, and HSBC all note that existing customers benefit from faster processing and, in some cases, preferential rates. Santander’s low interest rate (7.9%) is only available to businesses that already hold a Santander business current account.
Larger loan amounts. Banks apply tiered APR structures where borrowing more attracts a lower rate. At Barclays, a £4,000 loan costs 14.9% APR while a £20,000 loan from the same lender costs 8.5% APR. If your actual funding need is close to a tier boundary, borrowing slightly more can reduce the effective rate on the whole facility.
Secured lending. Business loans secured against property, assets, or personal assets typically carry interest rates 2–5 percentage points below equivalent unsecured products. The lower rate reflects the lower risk to the lender. Personal guarantee requirements on unsecured loans provide partial protection to lenders but do not reduce rates in the same way as physical collateral.
Trading history and clean financials. Most banks want 2 years of filed accounts. Businesses with 3+ years of consistent, growing revenue and clean credit typically sit at the lower end of a lender’s APR range. Businesses at the minimum eligibility threshold typically sit at the top end. Improving your accounts before applying can materially affect the rate you are offered.
Low Interest Business Loan: What to Watch Out For
A low headline APR does not necessarily mean the cheapest loan. HSBC’s 7.1% APR carries an early repayment penalty that increases the effective cost if you settle early. TSB’s 9.9% APR includes a £250 arrangement fee that adds 2.5% to a £10,000 loan. Funding Circle’s 6.9% carries an undisclosed completion fee. Always calculate total amount repayable – APR + all fees – before comparing.
Lenders advertising low APRs sometimes offset the headline rate with fees that are less prominently disclosed. Before accepting a loan offer, always request and calculate:
- Total amount repayable – the sum of all capital, interest, and fees over the full term
- Arrangement / origination fee – one-off charge at drawdown
- Early repayment charge – if you might repay ahead of schedule
- Monthly maintenance or service fee – recurring charges some alternative lenders apply
- Break cost or exit fee – particularly relevant on variable rate products if rates fall
Related Business Loan Guides
Compare individual lenders we have reviewed in depth, or explore the full cost breakdown of business borrowing.
- Business Loan Costs UK 2026 – complete APR, fee, and worked example comparison
- HSBC Business Loans Review 2026 – 7.1% APR, no arrangement fee
- Santander Business Loans Review 2026 – 7.9% APR + 12 months interest-free
- Funding Circle Review 2026 – from 6.9% APR, up to £750K
- Short-Term Business Loans UK – 3–18 month funding for urgent needs
- Capify Review – higher-cost alternative for businesses that cannot qualify for low-interest lending
