"Net 30" looks simple. It isn\'t always. The countdown can start from the invoice date, the receipt date, or the end of the month, and getting the wrong due date in your head is the most common way to pay an invoice late. Here\'s what each term actually means, with the math.
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Net 30 means the full invoice is due 30 calendar days from the invoice date. Net 60 doubles that window to 60 days. Net 90 is 90 days. The "net" part means there\'s no discount for early payment — the full amount is owed by the due date. If there is an early-payment discount, the term looks like "2/10 Net 30": 2% off if you pay within 10 days, otherwise the full amount in 30.
That\'s the easy part. The hard part is the variations: EOM, "from receipt," business days vs calendar days, and the difference between the invoice date stamped on the document and the date the invoice actually landed in your inbox.
Calendar days from the invoice date, full amount due. No discounts unless the term says otherwise.
The B2B default. 30 calendar days from the invoice date. Common for services, consulting, agencies, accounting, and most small-business vendors.
60 days. Larger companies use Net 60 to extend Days Payable Outstanding. Common in manufacturing, distribution, and contracts with corporate buyers.
90 days. Reserved for enterprise contracts, government work, and industries with long cash cycles. Often negotiated alongside early-payment discount terms.
| 2/10 Net 30 | 2% discount if paid in 10 days, full amount due in 30. The discount is worth ~36% annualized — take it whenever cash allows. |
| 1/10 Net 30 | 1% discount within 10 days. Smaller, but still ~18% annualized. |
| Net 30 EOM | 30 days from the end of the month the invoice was issued. An invoice from May 12 is due June 30. |
| Net 10 | 10 days. Often a freelancer or small vendor pushing for fast payment. Tight — set the reminder the day the invoice arrives. |
| Due on receipt | Pay immediately. No grace period. Common from contractors who\'ve been burned before. |
| CIA / COD | Cash in Advance or Cash on Delivery. Paid before or at the moment of fulfillment. |
The clock starts on the invoice date printed on the document — not the date you received it, not the date you opened the PDF. The only exception is contracts that explicitly say "from receipt," and those are rare. If you\'re ever unsure, default to the earlier date. Paying a day early is free. Paying a day late is not.
Worked example. Invoice dated April 14, terms Net 30. Add 30 calendar days: due date is May 14. Set your reminder for May 8 to leave a six-day buffer. If the terms were 2/10 Net 30, add 10 days for the discount window: pay by April 24 to capture the 2% off.
For Net 30 EOM, start at the end of the invoice month. Invoice dated April 14, terms Net 30 EOM. End of April is April 30. Add 30 days: due date is May 30. That\'s 16 extra days compared to standard Net 30 on the same invoice.
| Due on receipt | Same day. Pay it immediately or set a reminder for the next business day. |
| Net 10 | Day 5 to 7. Tight window means short buffer. |
| Net 30 | Day 23 to 25. Five-day buffer for transfers and approvals. |
| Net 60 | Day 53 to 55. The longer window means the invoice is easier to lose track of, not easier to pay. |
| Net 90 | Day 83 to 85. Same logic. Long terms make late payment more common, not less. |
| 2/10 Net 30 | Day 7 to 8 if you want the discount. Otherwise day 23 to 25. |
Counterintuitively, longer payment terms cause more late payments — not fewer. A 30-day window keeps the invoice mentally close. A 90-day window means the invoice is forgotten within two weeks and the due date arrives months later when you\'ve moved on. The longer the term, the more important the invoice payment reminder becomes.
It almost always means 30 calendar days from the invoice date, not receipt. A few contracts specify "from receipt" — check the contract, not the invoice. If the invoice is dated May 1 and you receive it on May 5, Net 30 still means May 31, not June 4.
Net 60 gives the buyer twice as long to pay — 60 days from the invoice date instead of 30. Net 60 is common in industries with longer cash cycles like construction and manufacturing. Net 30 is the default in B2B services and accounting.
You get a 2% discount if you pay within 10 days. Otherwise the full amount is due in 30 days. On a $5,000 invoice that's $100 saved by paying 20 days earlier — an effective annualized return of roughly 36%. Setting a reminder for day 8 captures it.
EOM stands for "end of month." Net 30 EOM means 30 days from the end of the month the invoice was issued. An invoice dated May 12 with Net 30 EOM is due June 30, not June 11. This is more buyer-friendly than standard Net 30.
Calendar days. Weekends and holidays count. Some contracts specify "30 business days," which would push the due date later, but the default is calendar days.
Set the reminder for day 23 to 25 from the invoice date. That gives you 5 to 7 days of buffer for bank transfer cutoffs, approval workflows, or login issues with the vendor's payment portal. If the terms include an early-payment discount, set it for day 7 instead.
Plug in the due date you calculated. Get an email a few days before. Skip the late fee, capture the early-payment discount.
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