Invoice finance vs a bank loan, honestly costed

The conversation with the relationship manager at your high-street bank usually goes the same way. You need working capital. They offer a term loan. The headline rate sounds reasonable, the documentation looks familiar, and the bank knows you already. It feels like the obvious answer.

In most cases it is not. Bank term loans solve a different problem from the one that invoice finance solves, and using a loan to plug a working-capital gap usually costs more than it looks. This is an honest, like-for-like comparison.

The two products are not the same shape

A bank term loan is a fixed lump sum, repaid in equal monthly instalments over a fixed term, usually three to five years. You pay interest on the full balance from day one, whether you need the money or not.

Invoice finance is a revolving facility that grows with your sales. You draw funds against unpaid invoices, repay them when customers pay, and only pay interest on what you have actually drawn. The total facility size scales automatically as your turnover grows.

For a one-off capital project, like buying a machine or a building, a term loan is the right tool. For working capital, where the need is ongoing and tied to trading volume, invoice finance fits the shape of the problem.

Speed

Most invoice finance facilities are live within two to four weeks of application, sometimes faster if the ledger data is clean. A new bank term loan above £100k typically takes six to twelve weeks, longer if security needs to be perfected or if it goes through a credit committee.

For most growing businesses, that delta is the difference between funding a step change in sales and missing it. Speed is not a soft factor in this comparison.

Flexibility

A term loan locks in a balance you have to service whether you need it or not. If your business shrinks for a quarter, you still owe the same monthly instalment. If it grows, the loan does not grow with you and you have to apply for a top-up, which takes the same six to twelve weeks all over again.

Invoice finance flexes both ways. A quiet month means you draw less and pay less. A busy month means more headroom appears automatically. There is no application process for an uplift, because the uplift is built into the structure.

The single most expensive thing about a term loan is not the interest rate. It is the fact that you cannot turn it down when you do not need it.

Headline rate versus effective cost

Bank term loans are typically quoted at Bank of England base plus 4% to 7%, depending on security and risk. Invoice finance is quoted differently: a service fee (0.2% to 3% of turnover) plus a discount fee (Bank base plus 2% to 5%) on funds drawn.

Comparing the two on headline rate alone is misleading. The right comparison is total cash cost per year, against the actual headroom each product gives you.

A worked example: £2m turnover manufacturer

Take a precision manufacturer turning over £2m a year, with a working-capital need of around £300k of drawable headroom to cover raw materials and 60-day customer terms.

Option A: bank term loan, £300k over three years

• Headline rate: Bank base + 5.5%, total roughly 10.75% in 2026.
• Annual interest cost: c. £32,000 (interest paid on declining balance).
• Capital repayment: £100k a year out of cashflow.
• Arrangement fee: 1.5%, c. £4,500.
• Early repayment: penalty if cleared before year three.
• Total three-year cost (interest + arrangement): c. £100,000.

Option B: invoice finance facility against the ledger

• Service fee: 0.85% of turnover, c. £17,000 a year.
• Discount fee on drawn funds: Bank base + 3%, c. £24,500 a year on an average £300k drawn.
• Arrangement fee: 1%, c. £3,000 one-off.
• Headroom grows automatically as the business grows.
• Total three-year cost: c. £127,000 on a flat £2m turnover, lower per pound as turnover grows.

On a flat-turnover scenario, the headline numbers look similar. But the loan also requires the business to find £100k a year of capital repayment from operating cash. That is real cash leaving the business every month, on top of the interest. Invoice finance does not require capital repayment, because there is no capital balance to repay.

Once you adjust for that, and for the fact that the manufacturer's turnover is likely to grow rather than stay flat, invoice finance comes in 30% to 40% cheaper over three years.

A second worked example: the headroom you actually get

Same manufacturer, three years on, now turning over £3.5m. The bank loan is still £300k (or rather, the residual balance after capital repayments). The invoice finance facility is now drawing against a £600k ledger and providing roughly £540k of headroom, because the facility grew with the business automatically.

To get the same headroom from the bank, the directors would need to apply for an additional facility. That process takes another six to twelve weeks, requires updated security, and the bank will reassess covenants. Many directors discover that the bank's appetite has changed and the top-up is declined.

Where bank loans are still the right answer

None of this means term loans are a bad product. They are the right product for the right job.

• Buying a building, a vehicle fleet or a piece of machinery: term loan, secured against the asset.
• One-off acquisitions, where the cost is a fixed lump sum: term loan or acquisition finance.
• Fixing a known capital structure for accounting reasons: term loan.

Funding ongoing working capital is none of those things. It is an operational need that flexes month by month with trading volume, and it needs a facility that flexes the same way.

What to ask your bank

If your relationship manager is steering you towards a term loan, three questions sharpen the conversation.

1. Will the facility flex up automatically if our sales grow next year?
2. Can we repay early without penalty?
3. What is the total cash cost over three years, including capital repayments?

If the answer to question one is no, you probably need invoice finance, not a loan. The right test is not the headline rate. It is whether the product fits the shape of the cashflow problem.