Net 30 gives the customer 30 calendar days after the invoice date to pay. Enter the issue date above and the calculator returns the exact date and weekday. Put that date directly on the invoice instead of relying on the customer to count.
This calculator uses calendar days. If your contract says 30 business days, end of month, or another convention, the result will be different.
Net 30 example
An invoice dated July 1 is due July 31 under standard calendar-day Net 30 terms. An invoice dated January 31 is due March 2 in a non-leap year because February has 28 days.
Net 30 affects timing, not the invoice amount. Agree it before work begins and include both “Net 30” and the calculated due date on the document.
Turn the result into a real document
The calculator is for the math. Use the free generator to itemize the work, add customer details and download a PDF, Word or Excel file.
Create an invoiceContinue through the invoice workflow
Frequently asked questions
What does Net 30 mean?
Payment is due 30 calendar days after the invoice issue date unless the agreement defines a different convention.
Is Net 30 the same as one month?
No. A calendar month can contain 28 to 31 days; Net 30 is exactly 30 days.
Can I calculate Net 60 instead?
Use the invoice due date calculator to choose Net 7, 15, 30, 45, 60, 90 or a custom number of days.