What you are actually negotiating
When you ask a supplier for net 60 instead of net 30, you are asking them to fund an extra thirty days of your operations out of their own working capital. From their side of the table that is an unsecured, uncollateralised loan to a customer whose books they have never seen. It is priced accordingly — either explicitly through the unit price, or implicitly through how quickly they return your calls when capacity gets tight.
This framing matters because it tells you what to offer in return. A buyer who says “we need 60 days” and stops talking has made a demand. A buyer who says “we need 60 days, and in exchange you get a rolling twelve-week forecast, a single consolidated payment run on the 15th, and a two-year commitment on the base SKUs” has made a trade. The second buyer usually gets the terms and keeps the relationship.
The vocabulary, briefly
Terms are written in a shorthand that hides real money inside four or five characters.
| Notation | What it means in practice |
|---|---|
| Net 30 | Full invoice due thirty days from the invoice date. Check whether the clock starts at invoice date, delivery date or receipt date — the three can differ by a fortnight. |
| 2/10 net 30 | Take 2% off if you pay within ten days; otherwise the full amount at thirty. The discount is the interesting part, and it is rarely small. |
| Net 30 EOM | Due thirty days after the end of the month of invoice. An invoice dated the 2nd gets nearly sixty days; one dated the 30th gets thirty. |
| 50/50 | Half on order, half on delivery. Standard for custom manufacturing and for any supplier who has been burned before. |
| CIA / PIA | Cash or payment in advance. Usually a statement about your credit rather than about their policy. |
| Consignment | You hold their stock and pay only on consumption. Excellent for your cash, expensive for theirs, and normally reserved for large committed volumes. |
The early-payment discount is a rate, not a rebate
The most commonly misread term on the list is 2/10 net 30. Two percent sounds like a rounding error. It is not. By paying twenty days early you earn 2% on the money for those twenty days, which annualises to roughly 37%. There are very few places a business can put cash and earn that. If you have the liquidity and your own cost of capital is anywhere near normal, taking that discount is one of the highest-return decisions available to a finance function — and one of the most consistently ignored.
The arithmetic is worth doing yourself rather than trusting a rule of thumb, because the answer swings hard on the gap between the discount date and the net date. The same 2% over a ten-day gap is a very different proposition from 2% over a fifty-day gap.
Work it out
Annualised cost of declining an early-payment discount.
- Cash saved on this invoice
- —
- Annualised cost of skipping it
- —
—
An illustration using the figures you enter, not a quotation or an offer of credit.
Four asks, in order of how easily they are granted
- Move the start of the clock. Shifting from invoice date to receipt-of-goods date often adds a week or more and costs the supplier almost nothing in perception. It is the cheapest ask on the list and the one buyers skip.
- Consolidate the billing cycle. One monthly statement instead of forty invoices reduces their administrative load and your payment-run chaos. Ask for statement terms and you frequently get extra days thrown in.
- Extend the net date. The headline ask. Expect it to be granted in stages — thirty to forty-five before forty-five to sixty — and expect a credit check.
- Remove the deposit. The hardest, because a deposit is the supplier's protection against a cancelled custom order. Offer a cancellation fee in its place and you may get somewhere.
What you should offer back
Suppliers are not primarily motivated by being liked. They are motivated by predictability, because predictability is what lets them buy raw material efficiently, schedule labour, and avoid holding inventory that may never move. Almost everything you can give them is a form of certainty:
- A rolling forecast, honestly maintained, with a stated accuracy expectation.
- A committed minimum over a defined period, even if it is well below your expected volume.
- Fixed payment dates you never miss — reliability at net 45 beats erratic net 30.
- Longer lead times on non-urgent orders, letting them fill production gaps with your work.
- A named contact on your side with authority, so their questions do not sit unanswered.
Reliability at net 45 beats erratic net 30.
Paying late is not a terms strategy
Some buyers negotiate net 30 and then pay at 55, treating the gap as free financing. It is not free. It is borrowed against the relationship, and the interest is charged in ways that never appear on an invoice: you fall down the allocation list when material is short, your change requests get quoted at a premium, your account gets moved to a junior representative, and eventually your terms are pulled back to prepayment at the worst possible moment.
If you cannot pay on the agreed date, say so before the date rather than after. A supplier who is told on day 25 that payment will land on day 40 can plan around it. A supplier who discovers it on day 40 has already had a difficult conversation with their own bank.
Before you sign
Confirm three things in writing: when the payment clock starts, what happens to the terms if you miss a date, and whether the price quoted assumes a particular payment behaviour. The third is the one that surprises people at renewal.
Where terms fit in the wider picture
Payment terms are one input into supplier performance, not the whole of it. A supplier who gives you sixty days and misses one delivery in four is worse than one who gives you thirty and never misses. That trade-off is exactly what a vendor scorecard exists to make visible, and the terms you agree should be written into the supply agreement rather than living in an email thread. Where a single supplier holds unusual leverage over your terms, that is usually a symptom of single-source concentration rather than a negotiating failure.