Free Invoice Due Date Calculator

This invoice due date calculator turns an invoice date and payment terms into the exact day payment is due. It covers net 30, net 60, net 90 and end of month.

Invoice and Terms

Due Date

Payment is due onMon, 9 Nov 2026
From today30 days left

How to work out an invoice due date

The calculator above counts the calendar days for you, so you never have to count on a wall calendar or remember which months have 30 or 31 days. Use it as a payment due date calculator for any invoice you send or receive.

  1. Enter the date printed on the invoice.
  2. Choose the payment terms you agreed, or pick a custom number of days.
  3. Read the due date and how many days are left. Tick the weekend option if you treat the next working day as the due date.

Common payment terms and what they mean

Here is what each term means, with the due date for an invoice dated Fri, 9 Oct 2026:

Payment terms and example due dates
TermWhat it meansDue date for the example
Due on receiptPay as soon as the invoice arrivesFri, 9 Oct 2026
Net 7Pay within 7 days of the invoice dateFri, 16 Oct 2026
Net 14Pay within 14 daysFri, 23 Oct 2026
Net 30Pay within 30 days, the most common termSun, 8 Nov 2026
Net 60Pay within 60 days, common with larger companiesTue, 8 Dec 2026
Net 90Pay within 90 daysThu, 7 Jan 2027
2/10 net 30Take 2% off by paying within 10 days, or pay the full amount within 30Mon, 19 Oct 2026 for the discount, Sun, 8 Nov 2026 in full
End of month (EOM)Pay by the last day of the month the invoice is dated inSat, 31 Oct 2026
30 days after end of monthPay within 30 days after that month endsMon, 30 Nov 2026

A net 60 due date or a "30 days from invoice date" deadline works the same way: count the days from the date on the invoice. For wording you can put on your own invoices, see our guide to invoice payment terms.

Net 30 explained

Net 30 means the full amount is due 30 calendar days after the invoice date. Weekends and public holidays count as days, and the clock starts on the date printed on the invoice, not the day the client opens it.

For example, an invoice dated Fri, 9 Oct 2026 on net 30 terms is due on Sun, 8 Nov 2026. That is a weekend, so many businesses would accept payment on the next working day. Tick the weekend option above to see that date. Use the tool above as a net 30 calculator for any other invoice date.

Frequently Asked Questions

Is this invoice due date calculator free?

Yes. It is free, there is nothing to sign up for, and it works straight away in your browser.

Is net 30 calendar days or business days?

Calendar days, counted from the invoice date, unless your agreement says something else.

When does the clock start on an invoice?

Normally on the date printed on the invoice, not the day the client opens it. Some terms count from delivery or from the end of the month, so check what you agreed.

What does 2/10 net 30 mean?

The client can take a 2% discount by paying within 10 days. Otherwise the full amount is due within 30 days.

What if the due date falls on a weekend?

Many businesses treat the next working day as the due date. Turn on the weekend option in the calculator to see that date.

What does end of month (EOM) mean?

Payment is due at the end of the month the invoice is dated in. "30 days EOM" means 30 days after that month ends.

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