Net terms are net terms, not “net whenever” a customer decides they want to pay. Terms are not expandable to suit customers’ needs because, remember, these are people who promised to pay within net terms. Most companies offer 30-day terms because that typically aligns with their customers’ payment cycles so 30 days is fine; however, things happen, invoices get misplaced and provided that the customer is still communicating even 60 days is OK. But when an account reaches 90 days, which is 3 times the terms that the customer agreed to when they signed off on the invoices, there is a reason they haven’t paid and they’re just not telling you.