What it is, how it works
Invoice factoring lets you raise cash against unpaid invoices by selling or assigning them to a funding partner, who advances most of the value soon after you raise each invoice. Because this is factoring rather than discounting, the funder also takes over collections and credit control, chasing your customers for payment directly. Your customers are told their invoices have been assigned, so the arrangement is disclosed rather than confidential. When each invoice is settled, you receive the remaining balance less the funder's charges.
In practice you enter a facility that funds your sales ledger on a rolling basis, so as older invoices are paid and new ones are raised, your available funding refreshes automatically. Most facilities advance a large proportion of each invoice up front, releasing the remainder once your customer pays. The funder's credit control team handles statements, reminders and chasing, which lifts the admin of collections off your own team. Some facilities cover your whole sales ledger, while selective options let you factor only chosen customers or individual invoices.
The result is a funding line that moves with your trade rather than a fixed lump sum. It works best when you invoice other businesses on credit terms and the wait for payment is what holds your cash flow back. The exact structure, advance rate and charges all sit with the individual funder and are subject to approval.