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Free Invoice Due Date Calculator
Enter the invoice date and payment terms to calculate the exact deadline. Handle Net 30, Net 60, end-of-month, custom terms, and weekend adjustments without sending any data to a server.
Calculated due date
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Choose an invoice date and payment terms.
Your agreement, purchase order, and local rules control the actual deadline. This calculator performs date arithmetic; it is not legal or accounting advice.
Quick reference
Common invoice payment terms explained
A payment term should tell the customer both when payment is due and which date starts the clock. Put the exact due date on the invoice even when you also use shorthand such as Net 30.
| Term | Calculation | Clear invoice wording |
|---|---|---|
| Due on receipt | Due on the issue date | Payment due upon receipt — [date] |
| Net 7 / 15 / 30 / 60 | Add the stated calendar days | Net 30 — payment due [date] |
| EOM | Final day of the invoice month | Payment due at end of month — [date] |
| 2/10 Net 30 | 2% discount within 10 days; otherwise full balance in 30 | 2% discount if received by [date]; full amount due [date] |
How invoice due dates are calculated
1. Start with the invoice issue date
Use the date the invoice is issued unless the customer agreement clearly starts the term from receipt, approval, delivery, or another event.
2. Apply the agreed term
Net 30 adds 30 days. EOM moves to the last calendar day of that month. Custom terms add the number you enter.
3. Apply the weekend rule last
Only move a Saturday or Sunday deadline when the agreement or normal customer process calls for that adjustment.
Make the payment term unambiguous
- Show the issue date and exact due date.
- Write the shorthand term as well as the date.
- State whether days are calendar or business days when it matters.
- Agree any early-payment discount before invoicing.
- Put late-fee wording in the contract and check local limits.
- Keep the invoice number and customer reference visible in reminders.
Need the whole invoice?
Create a private PDF invoice with the calculated dates, line items, tax, discounts, and your reusable business details.
Open the free invoice generatorInvoice due date FAQs
What does Net 30 mean on an invoice?
Net 30 means the invoice balance is due 30 calendar days after the invoice date unless your agreement defines a different starting point or counting method.
Are Net 30 terms calendar days or business days?
Net terms normally refer to calendar days, but the contract or purchase order controls. If a customer uses business days, write that rule explicitly rather than relying on the words Net 30 alone.
What if an invoice due date falls on a weekend?
The parties should agree whether the deadline remains on that date or moves to a working day. This calculator can keep the date, move it to the following Monday, or move it to the preceding Friday.
What does EOM mean in payment terms?
EOM means end of month. In this calculator, EOM sets the due date to the final calendar day of the invoice month.
What does 2/10 Net 30 mean?
It commonly means the customer may deduct 2% when paying within 10 days; otherwise the full balance is due within 30 days. Put the exact discount and deadline on the invoice and agreement.