What Is a Funding Line in Invoice Finance?
A funding line is the total amount a provider will advance against your whole ledger at any one time, also called the facility limit. On a £1m funding line you can have up to £1m advanced at any moment. Facility limits are reviewed annually and flexed based on your turnover, customer mix, and ledger quality.
What this means for your business
A funding line, sometimes called a facility limit, is the maximum amount your invoice finance provider will advance against your entire debtor ledger at any one time. For a UK SME, this means that if you hold a £500,000 funding line, you can draw up to £500,000 in total across all your outstanding invoices at once. The funding line is not a fixed, permanent figure. Providers review it regularly, typically on an annual basis, taking into account your business turnover, the quality of your invoices, and the spread of your customers. A growing business can often negotiate a higher facility limit over time, making invoice finance a flexible working capital tool that can scale alongside your revenue.
Key points
- The funding line represents the total facility limit available across your whole debtor ledger, not a per-invoice cap.
- Providers assess your customer mix and ledger quality when setting and reviewing your facility limit.
- Facility limits are typically reviewed annually, though reviews can be triggered by significant changes in your turnover or debtor book.
- Exceeding your funding line means new invoices may not be eligible for advance until existing ones are settled.
- A higher concentration of invoices with a single debtor can reduce the effective funding line available to you.
Common pitfalls
A common mistake is assuming the funding line automatically increases as your business grows. If your turnover rises sharply but your facility limit has not been reviewed, you may find yourself unable to draw sufficient funds. It is also worth checking whether your agreement includes concentration limits, which cap how much can be advanced against any one customer. Businesses sometimes overlook that the funding line reflects the ledger as a whole, so slow-paying debtors or disputed invoices can reduce the amount practically available, even if the headline facility limit appears sufficient.
Related questions
How is a funding line different from the advance rate in invoice finance?
The funding line is the overall ceiling on what can be advanced across your whole ledger at any one time. The advance rate is the percentage of each individual invoice your provider will release upfront, typically between 70 and 90 per cent in the UK. Both figures together determine how much cash you can actually access.
Can I request an increase to my funding line before the annual review?
Yes, most UK invoice finance providers will consider an interim review if your business has grown materially or you have won a significant new contract. You would usually need to provide up-to-date management accounts and an aged debtor report to support the request. It is worth raising this proactively with your provider rather than waiting until you hit the limit.
Does a concentration limit affect how much of my funding line I can use?
Yes, concentration limits restrict how much of the funding line can be advanced against invoices from a single debtor, often capped at a set percentage of the total ledger. If one customer makes up a large proportion of your sales, this can mean your effective available funding is lower than the headline facility limit. Discussing concentration limits with your provider before signing is advisable if your business relies heavily on a small number of customers.
Director, Market Invoice
Oliver leads Market Invoice's editorial and comparison research. With a background in UK commercial finance, he oversees provider analysis, rate verification, and industry reporting across all verticals.
Last reviewed: 28 May 2026