Understanding invoice finance fees: a UK SME breakdown

Invoice finance is one of the most useful working-capital products in the UK SME toolkit, but it is also one of the hardest to price-compare. A quote that looks cheap on a headline service fee can be expensive in practice once you add in the discount charge, the minimum monthly fee and the ancillary costs. This guide walks through every layer of the typical UK invoice finance fee stack so you can read a facility offer the way an experienced finance director would.

The five layers of an invoice finance quote

Most UK invoice finance providers — Bibby, Skipton Business Finance, Time Finance, Kriya, Novuna Business Cash Flow — quote against the same five-layer structure, though the labels and bundling differ.

1. Service fee

The service fee is a percentage of annual turnover or financed turnover, typically 0.3% to 3.0%. It covers the running cost of the facility — credit control on factoring, ledger management, statementing, debtor reporting. Smaller businesses and higher-risk sectors sit at the top of the range; larger ledgers and clean sectors sit at the bottom. Whole-turnover facilities (you submit the entire sales ledger) are usually cheaper on service fee than selective or single-invoice facilities, because the lender amortises its fixed cost across more invoices.

2. Discount charge

The discount charge is interest on the funds actually drawn down. It is usually expressed as Bank of England base rate plus a margin of 1.5% to 4.5% per year, charged daily on the outstanding drawn balance. This is the layer most directly comparable to a normal borrowing cost — and the one most owners under-weight when comparing quotes. A facility with a low service fee and a wide discount-charge margin can easily be more expensive overall than one priced the other way around.

3. Minimum monthly fee

Almost every UK invoice finance facility carries a minimum monthly fee — sometimes called a minimum service fee. It is the floor the lender wants to earn regardless of how little of the facility you use. If your turnover dips and your service fee falls below the floor, you pay the floor. This is the most common reason businesses end up paying for invoice finance they did not actually use, and it is the layer most likely to make a facility uneconomic during slow trading periods.

4. One-off and per-transaction charges

• CHAPS transfer fees — typically £20 to £30 per same-day payment.
• BACS fees on next-day payments — usually £5 to £10.
• Annual audit fees — often £750 to £2,500 for the lender's ledger review.
• Take-on or set-up fees — £500 to £2,500 typically.
• Refactoring fees — charged when an invoice is reassigned, disputed or aged out and refunded against the ledger.
• Concentration surcharges — applied where a single debtor exceeds an agreed share of the ledger.

5. Termination terms

UK invoice finance facilities typically run on rolling 12 or 24-month terms with 90-day notice periods. Terminating mid-term usually triggers an early-exit fee equivalent to 3 to 12 months of the minimum monthly fee, depending on the contract. Some lenders waive the exit fee where the facility has been in place for over 2 years and the leaving business has paid above a certain volume in service fees. Read the termination clause before signing — it is the single most expensive surprise in invoice finance.

How advance rate affects the maths

The advance rate is the percentage of each eligible invoice the lender will release upfront — typically 80% to 90%. The remainder, less fees, is paid when the customer settles. A higher advance rate releases more cash but does not change the service fee or discount charge. Lower advance rates appear in sectors with disputed invoice risk, retentions or pay-when-paid clauses (construction is the most common).

Comparing factoring vs invoice discounting on cost

Factoring is usually 0.2% to 0.8% more expensive on service fee than invoice discounting because the lender does the credit control. Invoice discounting (confidential, you manage collections) is typically only available to more established businesses with proven credit control processes. For early-stage SMEs the additional cost of factoring is often offset by the operational saving of outsourced credit control.

Selective and spot invoice finance

Providers like Kriya and Skipton Business Finance offer selective finance, where you fund one invoice or a chosen subset rather than the whole ledger. Pricing is usually expressed as a flat percentage per invoice (often 1% to 4% of invoice value) for the days the funds are outstanding. There is rarely a minimum monthly fee because there is no obligation to use the facility. Selective is more expensive per invoice than a whole-turnover facility, but it suits businesses with occasional large invoices to a strong debtor.

Calculating your real all-in cost

1. Estimate annual financed turnover (the ledger you will assign).
2. Apply the service fee percentage to get an annual service fee.
3. Estimate average drawn balance through the year and apply the discount-charge margin plus base rate to get annual interest.
4. Add 12 times the minimum monthly fee — if your service fee comes out below this, swap it in.
5. Add expected ancillary charges (audit, set-up, transfers).
6. Divide total annual cost by average drawn balance to get an effective annual cost percentage. That is the figure to compare across quotes.