Invoice Due Date Calculator
Enter the invoice date and the payment terms to get the exact due date. Net 7, Net 30, Net 60, end of month or your own number of days.
Invoice details
Due date
Payment is due on
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The same invoice on other terms
Days are counted as calendar days, weekends included. Public holidays are not adjusted for. If your terms say business days, state that on the invoice.
What the payment terms mean
Payment terms tell the client how long they have to pay. They should be written on the invoice and agreed before the work starts.
- Net 30: payment is due 30 days after the invoice date. Net 7, Net 14 and Net 60 work the same way with a different number of days.
- EOM and 30 EOM: EOM means due at the end of the month the invoice was issued. 30 EOM means 30 days after that month ends, so an invoice dated 10 March is due on 30 April.
- Due on receipt: payment is expected as soon as the client gets the invoice. In practice it gives the client no grace period, so many businesses prefer a short Net term.
When an invoice is paid late
Once the due date passes, you can follow up and, if your terms say so, charge interest or a fee. Work out the amount with our Late Fee Calculator.
Invoice due date calculator FAQ
What does Net 30 mean on an invoice?
Net 30 means the full amount is due 30 days after the invoice date. An invoice dated 1 June with Net 30 terms is due on 1 July.
How do I calculate an invoice due date?
Add the number of days in the payment terms to the invoice date. The invoice date is day zero, so 30 days after 1 June is 1 July. This calculator does it for you and handles the different month lengths.
What is the difference between Net 30 and 30 EOM?
Net 30 counts 30 days from the invoice date. 30 EOM counts 30 days from the end of the month the invoice was issued, which gives the client longer, up to nearly two months depending on the invoice date.
Do weekends and bank holidays count?
Unless your terms say business days, the days are calendar days and weekends are included. This calculator does not adjust for public holidays, and it warns you when the due date lands on a weekend.
What payment terms should I use?
There is no single right answer. Shorter terms bring cash in sooner, while longer terms are sometimes what a larger client expects. Whatever you choose, write it on the invoice and in your contract, and consider a late fee for invoices paid after the due date.
Put the due date on your invoice
Zap Bill invoices carry your payment terms and due date, and you can track which invoices are overdue. Create one free, with no sign-up needed.