An invoice due date is the date payment is expected under the parties’ agreement. It may be a fixed calendar date or calculated from the invoice date or another agreed event.
The invoice due date is the date by which the customer is expected to pay an invoice under the agreed terms. It gives both parties a clear point for payment planning and follow-up. A due date should reflect the agreement; do not assume that every business uses the same default period.
How due dates are calculated
Start with the event named in the agreement—often the invoice date—then apply the number of days or the stated calendar date. For example, if an invoice is issued on 7 October 2026 and the agreed term is Net 30 counted from issue, adding 30 calendar days gives 6 November 2026. If a contract defines a different starting point or day-count convention, follow that definition.
Common ways to state a due date
- Due on receipt: payment is expected when the customer receives the invoice; state a clear date or explanation if timing needs precision.
- Net 7 / Net 14: payment is due seven or fourteen days after the agreed starting point.
- Net 30 / Net 60: payment is due thirty or sixty days after the agreed starting point.
- Custom date or milestone: specify an actual date or the event that starts the payment period.
Calendar days or business days?
Do not assume a day count excludes weekends. State “calendar days” or “business days” where the distinction matters and make sure that wording matches the agreement. The calculator can skip weekends when you select business-day mode, but it does not include public holidays.
Make the due date easy to understand
Showing both the term and a calendar date can reduce ambiguity—for example, “Net 30; due 6 November 2026.” Check the date when an invoice is reissued, a deposit is paid or the terms are changed. A reminder should refer to the invoice number and the stated due date.
Example
A supplier issues invoice INV-2026-014 on 7 October 2026. Their written agreement says Net 30 from invoice date. The invoice displays “Due 6 November 2026.” The customer can now distinguish the payment deadline from the invoice date and the service period.
Calculate a date with the Invoice Due Date Calculator, then confirm the result against the agreed term.
Frequently asked questions
Does Net 30 always mean 30 days after the invoice date?
Not necessarily. The agreement should say what event starts the count and whether days are calendar or business days. Put the actual due date on the invoice where possible.
Do business-day due dates skip public holidays?
Not in this calculator. Its business-day option skips weekends only; it has no public-holiday calendar. Check local dates and the agreement yourself.
What does due on receipt mean?
It generally asks the customer to pay when the invoice is received. If a specific date or grace period is intended, spell it out rather than relying on an ambiguous phrase.
General information only—not legal, tax or accounting advice. Requirements can vary by jurisdiction, transaction and agreement. Confirm what applies to your situation.