Invoice Finance APR Equivalent Calculator UK

Translates a quoted invoice finance facility (service charge % + discount charge) into a true APR equivalent so you can compare to a business loan or credit line on the same basis.

Calculator

True APR equivalent

11.1%

Effective annualised cost11.1%
Comparable toMid-tier business loan

Invoice finance at this cost is comparable to a mid-tier UK business loan. Worth considering when the cash flow benefit (faster growth, lower bad debt) is genuine.

Worked example: 0.7% service charge, 60 debtor days (default calculator scenario)
ItemValue
Service charge0.7% of turnover
Discount margin2.0% above BoE base (3.75%)
Average debtor days60
Advance rate80%
Service charge annualised on cash advanced5.3%
Total discount charge5.75%
True APR equivalent11.1%
Comparable toMid-tier business loan

Source: Market Invoice APR equivalent calculator, base rate 3.75%

Illustrative default scenario. APR equivalent = service charge annualised over debtor days on the cash actually advanced, plus the full discount charge.

View as plain-text Markdown
### Worked example: 0.7% service charge, 60 debtor days (default calculator scenario)

| Item | Value |
| --- | --- |
| Service charge | 0.7% of turnover |
| Discount margin | 2.0% above BoE base (3.75%) |
| Average debtor days | 60 |
| Advance rate | 80% |
| Service charge annualised on cash advanced | 5.3% |
| Total discount charge | 5.75% |
| True APR equivalent | 11.1% |
| Comparable to | Mid-tier business loan |

Source: Market Invoice APR equivalent calculator, base rate 3.75%

Illustrative default scenario. APR equivalent = service charge annualised over debtor days on the cash actually advanced, plus the full discount charge.
Where an APR equivalent can mislead
“An APR equivalent leaves out the fees that often decide the real cost: minimum monthly service charges, setup and renewal fees, and CHAPS or same-day payment charges. On a small ledger the minimum fee can dominate, so a facility with a lower APR equivalent can cost more in pounds than one with a higher rate. Compare total pounds paid per year for your actual volume, not just the percentage.”
OM

Oliver Mackman

Director, Best Business Loans Ltd, Market Invoice

Reviewed 11 June 2026

What this tool tells you

Translates a quoted invoice finance facility (service charge % + discount charge) into a true APR equivalent so you can compare to a business loan or credit line on the same basis.

All UK invoice finance providers serve businesses across the full UK. The numbers above are typical UK market rates for invoice finance APR calculator UK. For real quotes matched to your specific business, use our 60-second comparison tool.

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