How invoice finance works, step by step

Invoice finance turns unpaid customer invoices into working capital. Instead of waiting 30, 60 or 90 days for a customer to settle, you draw most of the value the moment you raise the invoice, then collect the rest when the customer pays. It sounds simple, and once a facility is running it genuinely is. The part most business owners have never seen is the journey: what happens during setup, what the day to day cycle looks like, and how the facility keeps pace as your sales grow.

This article follows that journey in order, from your first conversation with a lender through to a facility that hums along quietly in the background of your accounts.

Stage one: application and ledger review

The starting point is an application. A lender wants to understand your business, your customers and the way you invoice. You will typically share recent accounts, an aged debtors report and a sample of your invoices and contracts. The lender is looking at the shape of your sales ledger: who your customers are, how spread out your income is, and how cleanly your invoices are raised.

Because the facility is secured against money your customers already owe you, the review leans on the strength of your debtor book rather than rigid balance sheet tests. That is why invoice finance often suits growing businesses that would struggle to raise a fixed loan.

Stage two: the survey or pre-lend audit

Before the facility goes live, most lenders carry out a survey, sometimes called a pre-lend audit. This is a short piece of due diligence, often a couple of hours, either on site or remotely. The lender confirms that your invoicing process is sound, that the debts are real and payable, and that your systems reconcile. It protects both sides and sets the ground rules for how invoices will be verified once you are trading.

Stage three: the agreement and notice period

Next comes the agreement. It sets out your advance rate, the fees, the facility limit and the notice period. Notice matters more than people expect. Invoice finance is a rolling arrangement rather than a one off loan, so the contract usually carries a minimum term and a notice period of one to three months to exit. Read that section closely and make sure it suits how you plan to use the facility.

Stage four: your first drawdown

With the agreement signed, the facility is live. You raise an invoice to a customer exactly as you always have, then upload or assign it to the lender, usually through an online portal that connects to your accounting software. The lender verifies the invoice, then advances an agreed percentage of its value, typically 80 to 90 per cent, often within 24 hours. The rest is held back as a reserve until your customer pays.

The facility does not lend against your future hopes. It releases cash against work you have already done and invoiced, which is why it grows naturally alongside your sales.

Stage five: the day to day cycle

Once you are up and running, the same loop repeats with every invoice. It becomes routine within a week or two:

1. You deliver the goods or service and raise the invoice.
2. You upload or assign the invoice to the lender.
3. The lender verifies it, sometimes with a quick check to the customer.
4. You receive the advance, usually 80 to 90 per cent, often within a day.
5. Your customer pays into a trust account on their normal terms.
6. The lender releases the reserve to you, less its fee.
7. The cycle repeats with the next invoice.

The trust account is simply the designated account your customers pay into. It keeps the collected funds ring fenced so the lender can settle each invoice cleanly and pass the balance back to you.

Who does the credit control

There are two broad ways the facility runs day to day. With factoring, the lender manages collections and follows up payment on your behalf, which frees your team from the ledger admin. With invoice discounting, you keep control of your own collections and the customer deals only with you. The choice affects who speaks to your customers about payment, but the underlying advance and reserve mechanics work the same way either way.

How the facility revolves and grows

The reason invoice finance suits expanding businesses is that it is a revolving facility. As you invoice more, more funding becomes available, because there is more value in the ledger to draw against. A fixed loan is a set amount that reduces as you repay. An invoice finance line instead breathes with your turnover. Win a large new contract and deliver against it, and the facility can scale to match, subject to the overall limit and the lender confirming the new customers.

A worked example: one £20,000 invoice

Say you agree an 85 per cent advance rate and a total fee of 3 per cent of the invoice value across the service charge and discount charge. You raise a £20,000 invoice to a customer on 60 day terms. Here is how the cash flows:

• Day one: you raise the £20,000 invoice and assign it to the lender.
• Day two: the lender verifies it and advances 85 per cent, so £17,000 lands in your account. A reserve of £3,000 is held back.
• Days three to sixty: you carry on trading with the £17,000 already working for you, rather than waiting two months for the customer.
• Around day sixty: your customer pays the full £20,000 into the trust account.
• Settlement: the lender takes its fee of 3 per cent, which is £600, and releases the remaining reserve. You receive £2,400.

Across the whole cycle you collected £17,000 up front and £2,400 at the end, a total of £19,400 on a £20,000 invoice, with the £600 difference being the cost of having most of your money two months early. The exact rate you pay depends on your business and your ledger, and we cover pricing in detail in a separate article.

What a typical week looks like

In steady state the facility asks very little of you. Invoices raised that week sync to the lender, advances arrive within a day, and payments received are matched off automatically. Many finance teams spend only a few minutes a week on it once the process settles. The heavy lifting is the setup, and after that it fades into the background while quietly smoothing your cash position.

Speaking to the team

The mechanics are consistent from lender to lender, but the advance rates, fees, notice periods and appetite for particular sectors are not. As a commercial finance broker we sit across the specialist invoice finance lenders, so we can match your ledger and your sector to the facility that fits rather than the first one you happen to find. We are not regulated by the Financial Conduct Authority, which is the correct position for business to business commercial finance. If you would like to see how a facility would work against your own invoices, speak to our invoice finance team and we will walk you through the numbers on your real ledger.