Free Invoice Due Date Calculator
Calculate invoice due dates for Due on Receipt, Net 7, 10, 15, 30, 45, 60, 90 or custom terms. Calendar or weekday counting, free and private.
Set the agreed starting point and term
Choose a valid date
Net 30 · calendar days
The dates are calculated in your browser. Nothing is uploaded or stored.
Calculate a Net 30, Net 45 or Net 60 due date instantly
Choose the invoice date—or the different starting event your agreement actually uses—then select a payment term. The calculator shows the exact due date and the calendar span. It can count ordinary calendar days or weekdays only and can apply an explicit weekend rule.
The default is Net 30 using calendar days, which matches DraftFort’s invoice generator. Nothing is uploaded, no account is required and the calculation is not saved.
This is date arithmetic, not legal, tax or accounting advice. The real deadline depends on the agreed starting event, counting convention, holidays and rules that apply to the transaction.
Net terms quick examples
These examples use an invoice date of July 15, 2026 and ordinary calendar days:
| Payment term | Calculated due date |
|---|---|
| Due on Receipt | July 15, 2026 |
| Net 10 | July 25, 2026 |
| Net 15 | July 30, 2026 |
| Net 30 | August 14, 2026 |
| Net 45 | August 29, 2026 |
| Net 60 | September 13, 2026 |
| Net 90 | October 13, 2026 |
The phrase alone does not prove which date starts the count. An agreement may start from the invoice date, delivery, acceptance, receipt or another event. Enter the date that matches the actual wording.
Calendar days versus business days
Calendar-day counting includes every day. Weekdays-only counting skips Saturday and Sunday, which makes the elapsed calendar span longer. It does not know public holidays, bank closures or local observances, so check those separately. For a custom workweek, endpoint rules and your own closure dates, use the business days calculator.
If a calculated date lands on a weekend, the optional adjustment can move it to the next or previous weekday. That is a user-selected scenario—not DraftFort’s conclusion about when payment is legally due.
What this calculator deliberately does not guess
- End-of-month formulas. Expressions such as
Net 30 EOMcan be defined in different ways; use the exact custom date required by the agreement. - Holiday calendars. Holiday rules vary by country and sometimes by region or banking system.
- Receipt or approval timing. The tool cannot know when a customer received, approved or accepted an invoice.
- Late fees or interest. A due date does not determine whether a charge is agreed, lawful or correctly calculated.
For plain-English definitions and early-payment notation, read invoice payment terms explained. When you are ready to bill, the free invoice generator can place the term and exact due date in a selectable-text PDF.
Frequently asked questions
How do I calculate a Net 30 invoice due date?
Choose the invoice or agreed start date and Net 30. With calendar-day counting, the calculator adds 30 days. For example, July 15, 2026 produces August 14, 2026. Confirm the starting event and counting method in your agreement.
Does Net 30 mean 30 calendar days or business days?
Net terms often use calendar days, but a contract or customer process may specify business days or another trigger. This calculator supports both calendar days and weekdays-only so you can model the wording that actually applies. Weekdays-only does not account for public holidays.
Can I calculate Net 45, Net 60 or Net 90?
Yes. Presets cover Due on Receipt, Net 7, Net 10, Net 14, Net 15, Net 30, Net 45, Net 60 and Net 90, plus a custom number of days.
What if the due date falls on a weekend?
You can keep the calculated date, move it to the next weekday or move it to the previous weekday. Select only the rule that matches the agreement or process; the calculator does not infer a legal deadline.
Does this calculator include public holidays?
No. The weekdays-only option skips Saturday and Sunday but does not apply any country, state, provincial or bank-holiday calendar. For an explicit custom workweek and holiday list, use DraftFort's Business Days Calculator, then confirm the rules that apply.
Are my invoice dates uploaded or saved?
No. The calculation runs in your browser. DraftFort does not receive or store the dates you enter.