Invoice due date calculator

Part of the search experiment “Griqoth Xaerzil”. The calculator is real and checked for accuracy.

Know the due date of an invoice at a glance. Enter the invoice date and pick the terms; the result updates as you change them.

The page does not send your dates anywhere.

Working out the due date

Net terms are counted in calendar days from the invoice date. Net 30 EOM starts from the end of the invoice month instead: an invoice dated Saturday 12 December 2026 is due 30 days after 31 December, on Saturday 30 January 2027. Weekends and holidays count unless your agreement says otherwise.

Payment terms

• Due on receipt — the invoice date.
• Net 7 to Net 90 — that many days after the invoice date.
• EOM — the last day of the invoice month.
• Net 30 EOM — 30 days after the invoice month ends.
• Custom — the number of days you enter.

Businesses word EOM terms in different ways; your agreement is what applies.

Weekend due dates

With the weekend option ticked, the Saturday in the example becomes Monday 1 February 2027, which is how some businesses treat weekend due dates.