Net 30 is a polite fiction for most small suppliers selling into large customers, and pretending otherwise is what turns a profitable quarter into a payroll scare. Big buyers have spent the last few years stretching what they call standard terms, and the email from procurement rarely mentions it. The PO shows up with Net 60 or Net 75, and the AP portal enforces it. If your pricing, your covenants, and your supplier payments were built around a 30-day cycle, you're financing a company much larger than yours.
The instinct is to complain about the buyer or to chase invoices harder. Neither fixes the arithmetic. What helps is dismantling the assumptions small suppliers keep repeating to themselves about how big-customer payment works, then rebuilding terms around what the calendar actually looks like. A practical primer on keeping a business running through a cash flow squeeze is a good place to start before you rework anything.
Myth: Your Written Terms Are What Actually Gets Paid
The number on your invoice is a request. The number your buyer's AP system honors is the answer. Those two are drifting further apart every year, and the drift is where small suppliers lose money without ever seeing a line item for it.
If you're building a cash forecast off your stated Net 30, you're forecasting a company that doesn't exist.
Rebuild the forecast around actual days-to-pay by customer, not the terms line on the PO. That single change reframes everything downstream, from hiring to inventory to how much runway you think you have.
Myth: Big Customers Will Renegotiate If You Just Ask Nicely
Procurement is not staffed to give you shorter terms because you asked. The buyer on the other end has an incentive plan tied to days payable outstanding, and shaving your terms costs them a metric. A polite request with nothing behind it almost always ends with a polite no.
Harvard Business Review's classic framework on negotiating from the weaker side flips the script: change what you're selling, bundle in something the buyer values, or create a credible alternative before you sit down. In practice, that looks like offering a small early-payment discount tied to Net 20, adding a service the buyer would otherwise pay a third party for, or being ready to name a competing customer who takes the same volume at faster terms. The ask lands differently when there's something on the table besides your discomfort.
Myth: Reminders and Late Fees Fix a 60-Day Buyer
Automated reminders work on distracted buyers. They do nothing to a Fortune 500 AP department that pays on a fixed cycle regardless of what your dunning software says. Late fees are worse: most enterprise contracts silently strike them during onboarding, and enforcing one against a large customer is a good way to lose the account. The fixes that move a big-buyer invoice are unglamorous:
- Invoice hygiene. Match the PO number, cost center, and line-item wording exactly. One mismatched field kicks the invoice back into a queue and resets the clock.
- Portal discipline. Submit through the buyer's AP portal on the day of shipment, not the end of the month. Batching costs you 15 to 20 days on average.
- A named human. Get the direct contact for the AP analyst on your account. Escalating through generic inboxes is where invoices go to age.
Myth: There's Nothing You Can Do at the Contract Stage
By the time an invoice is 45 days out, your options are narrow. At the contract stage, they're wide, and small suppliers routinely leave the best ones on the table because nobody wants to slow down the deal. A few clauses that pay for themselves:
- Milestone billing. Split large deliverables into three or four invoiced milestones instead of one end-of-project bill. You get paid on the same terms, but the clock starts sooner.
- Early-pay discounts. A small discount for payment inside 10 days is often cheaper than financing the receivable, and many large buyers have a program set up to accept it.
- Interest on late payment. Even if it's rarely enforced, having it in the contract gives your collections team something to point at during escalation.
- Terms defined by receipt of invoice, not receipt of goods. The difference is often two to three weeks of float you're currently giving away.
For a plain-language walk-through of what different net terms commit you to before you sign, the US Chamber's explainer is worth a read. Net 60 and Net 90 are not neutral defaults. They're working-capital decisions, and the supplier who understands that walks into the negotiation with a much better hand.
