A clearer view of your numbers
Payment Terms & Due Date Calculator
Find a due date from an invoice date and common Net terms or a custom number of calendar days.
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01 / EnterThese are editable examples, not recommended rates. Enter your own numbers.
Your result
02 / UnderstandLoading the example calculation…
Show the math
ISO dates use calendar days. Weekends and holidays are included; no business-day adjustment is made.
What this means
Net terms add a specified number of calendar days to the invoice/start date. The date is computed without time-of-day or timezone changes.
Worked example
An invoice dated 2026-10-06 with Net 30 is due 2026-11-05. Net 0 uses 2026-10-06. Weekends and holidays are not skipped.
How the math works
Due date = start date + selected calendar days. Start date is day zero; Due on receipt adds zero days.
About this estimate
Gregorian calendar, calendar days only, no grace period or business-day adjustment. The selected contract may define receipt timing or a different counting convention. The example date is not automatically today.
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Formula v1.0.0 · Reviewed · Tool ID: payment-terms-due-date