Invoice Due Date Calculator
Net 30, Net 45, EOM & payment terms calculator
Due dates from Net 15-90, EOM, or 2/10 Net 30. See the calendar date, days left, and an overdue flag. No login.
How it works
- 1
Enter the invoice date
Pick the issue date from the vendor bill or the invoice you sent.
- 2
Choose payment terms
Select Net 15-90, EOM, Net 30 EOM, 2/10 Net 30, or type a custom day count.
- 3
Read the due date
See the exact calendar date, days remaining, and an overdue flag if the deadline has passed.
Worked example
An example of the result Invoice Due Date Calculator produces.
Example due dates from a 1 April 2026 invoice (EOM example uses 15 September 2026).
| Terms | Invoice date | Due date | Notes |
|---|---|---|---|
| Net 30 | 1 Apr 2026 | 1 May 2026 | 21 days remaining on 10 Apr |
| Net 45 | 1 Apr 2026 | 16 May 2026 | 36 days remaining on 10 Apr |
| EOM | 15 Sep 2026 | 30 Sep 2026 | Last day of invoice month |
| Net 30 EOM | 15 Sep 2026 | 30 Oct 2026 | Month-end + 30 days |
| 2/10 Net 30 | 1 Apr 2026 | 1 May 2026 | 2% off if paid by 11 Apr |
What is Invoice Due Date Calculator?
An invoice due date calculator adds your payment terms to the invoice date so Accounts Payable (AP) and finance teams know the exact calendar deadline. Net 15, Net 30, Net 45, Net 60, and Net 90 count calendar days from the invoice date. EOM uses the last day of the invoice month; Net 30 EOM adds 30 days after that. 2/10 Net 30 also shows the 10-day discount deadline — and the 2% off amount if you enter a total. The calculator accounts for month lengths and leap years, and flags days remaining or overdue.
Frequently Asked Questions
Everything you need to know about the Invoice Due Date Calculator.
What is a Net 30 calculator?
A Net 30 calculator adds 30 calendar days — not business days — to an invoice date so you know the exact payment deadline. Weekends and holidays count. Enter the invoice date, choose Net 30, and the tool returns the due date plus days remaining or days overdue. The same calculator also handles Net 15, Net 45, Net 60, Net 90, EOM, and 2/10 Net 30.
What does Net 30 mean on a vendor invoice?
Net 30 payment terms mean the total invoice amount is due 30 calendar days from the invoice date (including weekends and holidays). For example, if an invoice is dated April 1st, a Net 30 calculation makes the payment due on May 1st.
How do I calculate a Net 45 invoice due date?
To calculate a Net 45 due date, add exactly 45 calendar days to the invoice issue date. Our free Net terms calculator performs this date calculation instantly, accounting for varying month lengths and leap years so you don't have to count days manually on a calendar.
How do I calculate a Net 60 or Net 90 due date?
Add 60 or 90 calendar days to the invoice date. A 1 April invoice on Net 60 is due 31 May; the same invoice on Net 90 is due 30 June (watch month lengths and leap years). Select Net 60 or Net 90 in this calculator instead of counting days by hand.
What is Net 30 EOM?
EOM means end of month. A Net 30 EOM due date is 30 calendar days after the last day of the invoice month — not 30 days after the invoice date. An invoice dated 15 September 2026 is due 30 October 2026 on Net 30 EOM (30 September + 30 days). Plain EOM (no extra days) is due on the last day of the invoice month: 30 September 2026. Select EOM or Net 30 EOM in this calculator instead of counting month-end dates by hand.
What does 2/10 Net 30 mean?
2/10 Net 30 means the buyer may take 2% off if they pay within 10 calendar days; otherwise the full amount is due in 30 days. On a 1 April invoice, the discount deadline is 11 April and the full due date is 1 May. Select 2/10 Net 30 and optionally enter the invoice amount to see the discounted total.
Is this a billing cycle calculator?
A billing cycle is the gap between one invoice date and the next (often 28 days, 30 days, or one calendar month). To find the next bill date, enter the last invoice date and choose Custom with 28 or 30 days — or EOM for a month-end cycle. Then run the calculator again with your Net terms on that new date to get the payment due date. This page is a due-date and payment-terms calculator; the custom and EOM options cover typical billing-cycle math without a second tool.
Is this an invoice calculator?
This is an invoice due date calculator — it returns the payment deadline from Net terms, EOM, or 2/10 Net 30. It does not add line items or calculate tax on an invoice total. For VAT on a net or gross amount, use the free VAT calculator.
What is the difference between an invoice due date and a bill due date?
While technically representing the same deadline, an 'invoice due date' is the term used by the seller tracking outgoing receivables, whereas a 'bill due date' is used by the buyer tracking accounts payable liabilities. This due date calculator serves both purposes, calculating payment deadlines for both billing records.
What are common payment terms like Net 15, Net 60, and Net 90?
Net terms indicate the number of days a buyer has to pay an outstanding bill. Net 15 requires payment in 15 days, Net 60 in 60 days, and Net 90 in 90 days. Businesses use these terms to manage vendor relationships, optimize working capital, and maintain predictable cash flow.
Can I extract due dates and payment terms from PDF bills automatically?
Yes. While this manual calculator is excellent for single bills, PerfectParser's AI extraction tools automatically parse PDF invoices, extract critical dates (invoice date, terms, and calculated due dates), and sync them directly with your accounting software to eliminate manual data entry.
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