Choose the date your agreed payment period starts and the payment terms. For many invoices that is the invoice date, but a contract or local rule may count from receipt, delivery or acceptance instead. The calculator returns the due date and the number of calendar days from the date you enter.
How payment terms set the due date
- Net terms (Net 7, Net 30, …)
- The calculator adds the stated number of calendar days to the date you enter. With 1 June as day zero, Net 30 returns 1 July. Confirm whether your agreement counts from the invoice, receipt, delivery or acceptance date.
- Due on receipt
- The calculator assumes the buyer receives the invoice on the date you enter and returns that same date. Use the actual receipt date if it differs.
- End of month
- Payment is due at the end of the invoice month, or the end of the following month for end-of-next-month terms. Common in many European markets.
Due date FAQ
What does Net 30 mean?
Net 30 usually gives the buyer 30 calendar days from the agreed starting event. This calculator uses the date you enter as day zero. Your agreement or local rule may count from the invoice, receipt, delivery or acceptance date.
How do I calculate an invoice due date?
Identify when the agreed payment period starts, then add the stated number of days. For end-of-month terms, use the last day of the relevant month. This calculator uses the date you enter as the start.
What payment terms should a small business use?
Use the term agreed with the client and allowed by the contract and governing rules. Net 7, Net 14, and Net 30 are examples, not universal defaults. State the exact due date on the invoice.
Do weekends and holidays count?
This calculator counts calendar days. Some contracts shift a due date that lands on a weekend or public holiday to the next working day; check what you agreed.