Plan
Invoice Due Date Calculator
Calculate invoice due dates from common payment terms and optionally move weekend dates to Monday.
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Result
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Complete the fields on the left. The result becomes the focus of the workspace when it is ready.
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How invoice terms set a due date
The calculator adds the selected number of calendar days to the invoice date. For example, Net 30 adds 30 days; it does not count only business days.
If you select the weekend adjustment, a due date falling on Saturday or Sunday moves to the following Monday. This adjustment does not check public holidays.
Check the agreement
Payment terms can define a different start date, business-day rule, holiday treatment or cutoff. The calculator does not interpret contract language or apply jurisdiction-specific rules, so confirm the invoice and customer agreement before relying on a date.
Use Invoice Payment Timing to compare an actual or planned payment date with the due date.
Related calculations: Invoice Payment Timing Calculator · Accounts Payable Aging Calculator
Need help?
Only the details you need.
The tool is intentionally simple. Open an answer only when you need it.
How does this tool work?
- Choose the invoice date.
- Select common payment terms or enter a custom number of days.
- See the due date and optionally move a weekend due date to Monday.
What does Net 30 mean?
Net 30 generally means payment is due 30 calendar days after the invoice date, unless your agreement says otherwise.
Does this account for public holidays?
No. The optional adjustment only moves Saturday or Sunday dates to Monday.
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