Payment terms define when and how a buyer must pay a supplier, using the trigger agreed in the contract — and they are often a low-cost form of working-capital financing for a team with recurring supplier purchases.
Net 30 often means payment is due 30 days from invoice date, but the agreed trigger may differ. Confirm when the clock starts, whether a valid invoice or acceptance is required, and how disputes affect payment. Longer terms can reduce working-capital pressure, although prices, fees and discount opportunities also matter.
Quick answers
What are the most common payment terms? COD (Cash on Delivery), Net 15, Net 30, Net 60, 2/10 Net 30 (2% discount if paid within 10 days, full amount due in 30), EOM (End of Month), and CIA (Cash in Advance). The agreed terms should appear in the purchasing record.
What does 2/10 Net 30 mean? The supplier offers a 2% discount if you pay within 10 days of the invoice date. If you do not take the discount, the full amount is due in 30 days. The implicit cost of skipping the discount is 37.2% annualized — often worth taking if you have the cash or a credit line below that rate.
How do payment terms affect cash flow? Longer terms give you more time to sell inventory and collect revenue before the supplier invoice is due. Net 60 instead of Net 30 means 30 extra days of float on every order — provided the price and other conditions are comparable.
Can I negotiate better payment terms? You can ask, using payment history, expected purchases and a proposed schedule. Approval depends on the supplier’s credit policy and cash needs. Compare any price or volume concession with the value of the extension.
What does CIA mean in payment terms? CIA means cash in advance: the buyer pays before the supplier ships. It reduces the supplier’s collection exposure while requiring the buyer to fund goods before delivery. Moving to later payment can reduce that funding period if price and other conditions remain comparable.
CIA payment terms, COD, Net 30, and 2/10 Net 30
The table assumes invoice-date terms unless another trigger is stated. “When cash leaves” shows the contractual timing, not an instruction to pay before validating the bill. Confirm ambiguous EOM wording with the supplier.
| Term | What it means | When cash leaves |
|---|---|---|
| CIA (Cash in Advance) | Buyer pays before goods ship | Before delivery |
| COD (Cash on Delivery) | Buyer pays when goods arrive | Day 0 |
| Net 15 | Full payment due 15 days after invoice | Day 15 |
| Net 30 | Full payment due 30 days after invoice | Day 30 |
| Net 60 | Full payment due 60 days after invoice | Day 60 |
| 2/10 Net 30 | 2% discount if paid by day 10; otherwise full by day 30 | Day 10 or Day 30 |
| EOM | Payment due at end of the month of invoice | End of invoice month |
| EOM Net 30 | Payment due 30 days after end of invoice month | 30 days after month-end |
The formula: annualized cost of skipping an early-payment discount
Annualized Cost = (Discount % / (100% − Discount %)) × (365 / (Full Days − Discount Days))
For 2/10 Net 30:
Annualized Cost = (2 / 98) × (365 / 20)
= 0.0204 × 18.25
= 37.2%
Forgoing the discount pays $100 later instead of $98 earlier: a 2.04% cost on the $98 retained for 20 days. The formula is a simple annualized comparison, not a compounded effective annual rate or a loan APR quote. Compare the dollar discount with financing fees, liquidity needs and the ability to meet other obligations.
| Discount term | Annualized cost of skipping |
|---|---|
| 1/10 Net 30 | 18.4% |
| 2/10 Net 30 | 37.2% |
| 2/10 Net 60 | 14.9% |
| 3/10 Net 30 | 56.4% |
| 1/10 Net 60 | 7.4% |
A longer gap between the discount and full-payment dates lowers this simple annualized rate. The decision still depends on actual financing costs and available cash; no term makes early payment automatically optimal.
Worked example
In an illustrative comparison with no fees or taxes, a business orders $15,000/month from a supplier offering 2/10 Net 30.
Option A: Always take the discount (pay on day 10)
- Monthly discount: $15,000 × 2% = $300
- Annual savings: $300 × 12 = $3,600
- Cash required: $14,700 available on day 10 of each cycle
Option B: Always pay on day 30 (skip the discount)
- No discount captured
- Cash available 20 days longer per cycle
- Value of that float at 8% cost of capital: $14,700 × (20/365) × 8% ≈ $64.44 per cycle, or $773.26 across 12 cycles
Net comparison: Taking the discount saves $3,600/year. Skipping it saves $773.26/year in float value. The discount wins by $2,826.74 annually — and that gap widens with order volume.
The math scales linearly: at $30K/month, the gap is $5,653.48/year.
Payment-term decisions to check
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Confirm the payment trigger. Invoice date, receipt and acceptance can be different dates. Preserve the agreed trigger, discount deadline, full due date and dispute process so buying and AP use the same terms.
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Compare discount dollars with liquidity. The annualized rate is a comparison aid. A buyer may still need cash for another obligation; include actual borrowing fees and cash availability before choosing early payment.
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Negotiate the whole purchase. Evaluate price, MOQ, delivery schedule and terms together. A larger commitment can absorb more cash than an extension releases. Suppliers may accept, reject or price a credit request according to their own constraints.
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Check actual performance. Agreed terms do not establish whether invoices were paid on time. Compare due dates with settlement dates, and resolve receipt or price disputes before the deadline where possible.
Keep the terms with the purchasing evidence
When payment questions require searching supplier emails, inspect LineNow’s procurement workflow. Follow one order’s terms, supplier confirmation, partial receipt and invoice exception through the living purchase order and accounting handoff. Agree which system calculates due dates and schedules payment.
A connected purchasing record gives finance the agreed commercial context. It does not replace cash planning or authorize payment by itself.
For the conventional discount notation, see OpenStax’s explanation of trade credit.
Related
- Procurement Software
- Purchase Order Software
- Supplier Management Software
- Days Payable Outstanding — calculate the ratio and compare it with actual invoice timing
- Cash Conversion Cycle — combine inventory, collection and payment timing
- Minimum Order Quantity — MOQ and payment terms are often negotiated together as a package
- Landed Cost — compare acquisition costs alongside discount conditions
- Closed-Loop Procurement — payment terms tracking is one link in the full procurement loop