Quick answer
An AR line draws against a borrowing base of eligible receivables rather than all booked revenue.
Key takeaways
- An AR line draws against a borrowing base of eligible receivables rather than all booked revenue.
- Compare advance rules, concentration limits, reporting and interest or unused-line charges.
- Availability can fall as invoices age or become disputed.

Direct answer
An AR line draws against a borrowing base of eligible receivables rather than all booked revenue.
A current receivables aging, customer contract, actual invoice and proof of accepted goods or services show what the buyer owes. Eligibility is assessed on the actual transaction rather than a general claim that a business has sales.
How to assess this transaction
Compare advance rules, concentration limits, reporting and interest or unused-line charges.
Trace the cash cycle from invoice issue, buyer approval, any advance, collection and release of the remaining balance. Identify which obligation falls due before the buyer pays and whether that stage has supporting records.
Where applications run into trouble
Availability can fall as invoices age or become disputed.
Put this risk in writing when comparing proposals. Ask which part of the order or receivable would be excluded and whether approval depends on a document you have not yet obtained.
Practical next step
Gather the documents for one real transaction and ask National Invoice Factoring which parts can be reviewed. Share the expected payment date and existing lender arrangements so any quote reflects your situation.
For broader context, review accounts receivable financing alongside alternatives; no article can determine approval or pricing for an individual deal.
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Written and reviewed by the National Invoice Factoring funding team — specialists in receivables and trade finance since 2009.
