What does net 90 mean on an invoice?

Net 90 is a payment term giving the buyer 90 days from the invoice date to pay. It shows up most often in industries where large enterprise buyers dictate terms to smaller suppliers, or in government and healthcare contracting where internal approval chains are genuinely long.

From the seller's side, net 90 is among the most aggressive terms to accept. The business has to carry 90 days of working capital before the invoice is even technically due, and if it slips another 30 days past due, you are looking at nearly a full quarter between work performed and cash received. Many small businesses underestimate how much credit they extend when they accept net 90 without pricing it in.

Because the due date is so far out, net 90 is the term where disciplined early follow-up matters most. A short touch at 30 and 60 days in, just to confirm the invoice is logged in the buyer's AP system and not stuck on someone's desk, dramatically reduces the number of invoices that sail past day 90 into genuine delinquency.