Payment Terms Calculator
Turn invoice dates and Net 7–90 or custom terms into a due date with an explicit day-one convention. Inputs stay in your browser.
Net 30 calendar-day planning from Aug 23, 2026.
Context matters.
- The contract, invoice, weekend adjustment, receipt date and jurisdiction can override this arithmetic date.
Sources & scope
The calculation guide and this source trail show what the result means, where the rule came from and when it was last reviewed. This is source-and-calculation QA, not a claim of medical, legal, tax or other professional review; time-sensitive decisions still belong with the linked authority.
A visible path from input to answer.
Turn invoice dates and Net 7–90 or custom terms into a due date with an explicit day-one convention. The page keeps the calculation scope and its limits beside the result so the output can be checked, copied or revisited.
- Read the record. The calculator uses Invoice date, Payment terms and Custom number of days and 1 additional field supplied in the form.
- Apply the scope. It applies the Global or user-supplied calendar arithmetic — assumptions shown beside the result reference and the explicit date, unit and counting conventions shown in the result.
- Expose the checkpoints. Intermediate rows, warnings and timeline events stay visible; the emphasized row identifies the primary checkpoint when one exists.
Net 30 calendar-day planning from Aug 23, 2026.
- Due dateSep 22, 2026
Calculation purpose: Turn invoice dates and Net 7–90 or custom terms into a due date with an explicit day-one convention. This is a high-sensitivity reference output; the linked authority or qualified professional controls the final decision.
Calendar inputs use plain year-month-day semantics. Leap days, month ends, date-pair order and unsupported dates are checked before the result is shown.
Rule set 1.1.0 · Last reviewed 2026-08-20 · Next review due 2027-02-20. The source panel below contains the linked evidence.
What to know before using the result.
What does Net 30 mean in this calculator?
It means 30 calendar days after the entered invoice or other confirmed anchor date unless the contract states a different convention.
Are weekends and holidays automatically moved?
Only when you select the business-day adjustment requested by the controlling terms.
Can end-of-month terms differ from a simple day count?
Yes. Contracts can define EOM, receipt dates, approval dates or custom calendars, so enter the exact written basis.