How Business Loan Rates Are Set
Your rate starts with the Bank of England base rate — 3.75% in mid-2026 — and adds a lender margin for risk and profit. A variable loan is quoted as base rate plus that margin, so it moves when the base rate does.
A 5% margin on top of the base rate means an 8.75% variable rate. If the base rate is cut to 3.50% your repayment falls; if it rises, your cash flow takes the hit.
We treat the margin as the part you can actually influence. The base rate is the same for everyone; your risk profile sets the margin, and that’s where a stronger application pays off.
What the Rates Look Like in 2026
You’ll see secured loans at 6-10% APR, unsecured high-street loans at 8-15%, and alternative lenders from 15% to over 50%. Where you land depends on security, your credit file, and how long you’ve traded.
You’ll find high-street banks tier the rate by loan size. Barclays runs 14.9% on a £1,000-£5,000 loan but 8.5% from £15,000, and HSBC charges 11.3% up to £10,000 and 8.6% above it — so a bigger loan can carry a lower rate.
Funding Circle starts from 6.9% fixed for strong limited companies; iwoca’s flexible facility carries a representative 49%. We rate both as fair, because they price very different risks.
Your rate sits wherever your risk does.
APR, Flat Rate, and Factor Rate
You should know which metric you’re quoted, because they aren’t comparable. APR is the true annual cost including fees; a flat rate looks cheaper than it is; a factor rate has no time element at all.
A 5% flat rate sounds like 5%, but because you repay as you go it works out near 9-10% APR. We steer clear of flat-rate quotes — they flatter the lender, not your cash flow.
A factor rate multiplies the advance: borrow £50,000 at 1.3 and you repay £65,000, fixed, whatever the timetable. Cleared in six months that’s an effective APR near 96%; over a year, nearer 48%.
Compare the total you’ll repay, not the badge on the rate.
What “Representative APR” Really Means
You won’t necessarily get the advertised rate. A representative APR only has to be offered to 51% of accepted applicants, so up to 49% — usually the thinner files — pay more.
That gap is risk-based pricing, and your file decides which side you land on. A clean credit file and two years of trading put you in the 51%; a CCJ or a short history pushes your quote above the headline.
You should treat a representative APR as a starting point, not a promise; we do too. Your real offer only appears after a soft check on your credit file.
Fixed vs Variable
You choose certainty or flexibility here. A fixed rate locks your monthly payment for the term; a variable rate tracks the 3.75% base rate plus a margin and moves with it.
You’re safer fixed when cash flow is tight, because a base-rate rise can’t reach your repayment. Funding Circle and most sub-£25,000 bank loans are fixed; larger commercial loans tend to be variable.
Fixed costs a little more upfront; a rate shock costs you more later.
What Determines the Rate You’re Offered
Your rate is priced from five things: security, your credit, trading history, turnover, and the loan size and term. Each one nudges the margin up or down.
Security is your biggest lever. Pledging an asset can roughly halve your rate — from about 12% unsecured to 6% secured — because it cuts the lender’s loss if you default.
Your personal credit file matters even behind a limited company, because the directors sign a personal guarantee. A CCJ or a thin file lifts the quote; clean credit and steady turnover pull it down.
Picture applying the week after a default lands — the algorithm prices it before a human reads your file.
How Loan Size and Term Change the Cost
You can sometimes cut your rate by borrowing slightly more. Lenders tier pricing, so crossing from £14,000 to £15,000 at Barclays drops you from 11.2% to 8.5% — the larger loan is cheaper per pound.
Your term length works the other way. A longer term eases the monthly payment but inflates the total interest, because the balance you pay interest on lingers for years.
Run the numbers before you sign: £10,000 at 10% APR costs £550 in interest over a year, but roughly £2,700 over five. Same rate, far more interest, for lower monthly strain on your cash flow.
How to Get a Lower Rate
You can move your own rate more than you would think. Offer security, shorten the term, tidy your credit file, and compare lenders on soft checks before you apply.
Fix your credit file first. Clear an outstanding CCJ, drop your card utilisation, and pay suppliers on time for a few months before you apply — each lifts the risk score your rate is priced from.
If you’ve traded under five years, a Start Up Loan at a fixed 7.5% bypasses risk-based pricing entirely. We send thin-file founders there before the commercial market.
Fees and Early Repayment Beyond the Rate
You should price the fees and exit terms beside the headline rate. An arrangement or completion fee, plus any early-repayment charge, can cost you more than a point of APR.
High-street banks mostly skip arrangement fees — Barclays, NatWest, and HSBC charge none on their small loans. Alternative lenders like Funding Circle fold a completion fee into the rate instead.
Check the early-repayment clause before you sign. iwoca, Funding Circle, Barclays, and NatWest let you settle early for free; HSBC charges a month plus 28 days’ interest. Settling early should save you money, not cost it — we always read that clause.
Business Loan Interest Rate FAQs
What is the average business loan interest rate in 2026?
It depends on security and your profile. Secured loans run at 6-10% APR; unsecured high-street loans sit in an 8-15% band, tiered by loan size (Barclays 8.5-14.9%, HSBC 8.6-11.3%, NatWest 12.24% for £10,000-£19,999); and alternative lenders price unsecured borrowing from 15% to over 50%. Funding Circle starts from 6.9% APR fixed, and iwoca’s flexible facility carries a representative 49%. All variable rates sit on top of the 3.75% Bank of England base rate.
What is the difference between APR and a factor rate?
APR is the standardised annual cost of borrowing, including compulsory fees, and it accounts for you paying the balance down over time. A factor rate, used on merchant cash advances, is a simple multiplier with no time element: borrow £50,000 at a factor of 1.3 and you repay £65,000, fixed, however fast you clear it. That makes the effective APR balloon if you repay quickly — near 96% over six months versus about 48% over a year — so compare the total repayable, not the headline.
Does a “representative APR” mean I will get that rate?
No. Under the FCA rule, a representative APR only has to be offered to at least 51% of accepted applicants, so up to 49% are charged more based on their risk. A clean credit file and a couple of years of trading put you in the cheaper half; a CCJ, a thin file, or a short history pushes your quote above the headline figure. Your real rate only appears after a soft eligibility check.
Should I choose a fixed or variable rate?
A fixed rate locks your monthly payment for the whole term, which matters when cash flow is tight or rates look uncertain. A variable rate tracks the Bank of England base rate (3.75% in mid-2026) plus a lender margin, so your repayment rises if the base rate does and falls if it drops. Most bank loans under £25,000 and all Funding Circle loans are fixed; larger commercial facilities are often variable.
How can I get a lower interest rate?
Offer security if you can — it is the single biggest lever and can roughly halve the rate. Shorten the term, clear any CCJ and lower your card utilisation before you apply, and compare lenders on soft checks so a string of hard searches does not dent your file. If you have traded for under five years, a government Start Up Loan at a fixed 7.5% sidesteps risk-based pricing altogether.
How we put this guide together
What we covered. This guide explains how UK business loan interest rates are set and priced in 2026, drawing on lender rate pages, FCA rules on representative APR, British Business Bank scheme terms, and Bank of England data. We do not rely on comparison-site summaries or aggregator data.
Data sources. Rates were checked against primary sources in June 2026 — the Bank of England base rate, Barclays and HSBC business-loan pages, NatWest, Funding Circle, iwoca, and the British Business Bank.
How we handle the maths. The factor-rate and term-length examples are worked from first principles; the effective-APR figures illustrate how repayment speed changes the real cost rather than quoting a single product rate.
Update cadence. We re-verify this page at least monthly, and whenever the base rate moves or a lender changes pricing. The verification date reflects the most recent full review. Some links on this page are affiliate links, see our editorial policy.
Regulatory note. This page is editorial content, not regulated financial advice. Credit products are subject to status and approval, and most business lending sits outside the FCA consumer-credit perimeter. Compare offers directly with providers before you apply.