Calculate an exact payment due date from an invoice date and Net terms. Choose calendar or business days, handle weekends, and copy unambiguous wording for your invoice.
An invoice dated January 1 with Net 30 terms is due January 31. Counting starts on the next day. If the agreement says 30 business days, weekends are excluded and the date falls later.
Copy-ready wording: “Payment is due 30 calendar days from the invoice date, on January 31.”
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For standard Net terms, add the agreed number of calendar days to the invoice issue date. Business-day terms skip Saturdays and Sundays; public holidays vary by location and must be checked separately.
Net 7 and Net 15 suit short projects and faster cash flow. Net 30 is common business-to-business wording, while Net 60 and Net 90 are more often requested by larger buyers. The clearest invoice includes both the terms and a specific due date.
Net 30 means payment is due 30 calendar days after the invoice date unless the contract says otherwise. It does not normally mean the end of the following month.
Usually yes: standard Net terms use calendar days. If your agreement specifies business days, select business days in the calculator.
This calculator starts counting on the day after the invoice date, the common interpretation of Net payment terms. State the exact due date on the invoice to remove ambiguity.
The date may remain the weekend date unless your contract says otherwise. The calculator can move it to the following Monday for practical scheduling.
Yes. Choose Net 7, 15, 30, 45, 60, or 90, or enter any custom number of days.
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General information only; reviewed August 2026.