Net 21 payment terms calculator
Net 21 means payment is due 21 days after the invoice date. Enter your invoice date to get the exact due date.
What does Net 21 mean?
Net 21 is a payment term stating that the full ("net") invoice amount is due 21 calendar days after the invoice date. It's one of the most common ways businesses agree on when an invoice gets paid. Net 21 (three weeks) gives clients a little more room than Net 14 without a full month wait. Counting starts from the invoice date unless your contract says "from receipt" or "from delivery", so spell out which one you mean on the invoice.
Early-payment discounts & late fees
You can pair Net 21 with an early-payment discount written as "2/10 Net 21" — 2% off if the client pays within 10 days, otherwise the full amount is due in 21 days. To discourage late payment, many businesses add a late fee of roughly 1.5% per month on overdue balances. State both the due date and any late-fee policy clearly on every invoice so there's no ambiguity.
Common net payment terms
| Term | Payment due |
|---|---|
| Net 7 | 7 days after the invoice date |
| Net 10 | 10 days after the invoice date |
| Net 14 | 14 days after the invoice date |
| Net 15 | 15 days after the invoice date |
| Net 21 | 21 days after the invoice date |
| Net 30 | 30 days after the invoice date |
| Net 45 | 45 days after the invoice date |
| Net 60 | 60 days after the invoice date |
| Net 90 | 90 days after the invoice date |
| Net 120 | 120 days after the invoice date |
Send a Net 21 invoice
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Create a free invoiceFrequently asked questions
What does Net 21 mean?
Net 21 means the full invoice amount is due 21 calendar days after the invoice date. For example, an invoice issued on the 1st with Net 21 terms is due on day 21.
How do I calculate a Net 21 due date?
Add 21 days to the invoice date. The calculator above does it for you — pick your invoice date and it shows the exact due date.
What is "2/10 Net 21"?
It's an early-payment discount: the client can take 2% off if they pay within 10 days, otherwise the full amount is due in 21 days. Adjust the numbers to set your own discount.
Can I charge a late fee on Net 21 invoices?
Yes. Many businesses add a late fee (often around 1.5% per month) on balances past the due date. State it clearly on the invoice and in your contract.