30 Days EOM (Net 30 EOM): Meaning and Due Dates

30 Days EOM means payment is due 30 days after the end of the month in which the invoice is dated. Counting from the last day of that month, an invoice dated 15 January 2026 is due on 2 March 2026 (Monday). Because a second counting method gives 28 February 2026, print the exact due date on the invoice.

Also written as: Net 30 EOM · 30 days end of month · EOM 30 days · Net 30 after EOM · 30 days after end of month · Net 30 days EOM

What 30 Days EOM means

abbreviation for net 30 days end of month: written on an invoice to show that it must be paid within 30 days of the beginning of the following month
— Cambridge Business English Dictionary, "30 Days EOM". Source · checked .

In date arithmetic: find the last day of the invoice month, then add 30 calendar days. That is method 1 below, and it is the reading our tables and due date calculator show first. The words "30 Days EOM" do not say which method applies, so agree it with your customer and print the resulting date on the invoice.

Two ways to count 30 Days EOM

  1. Method 1: end of the invoice month + 30 days. Invoice dated 15 January 2026 → end of month 31 January 2026 → + 30 days = 2 March 2026 (Monday).
  2. Method 2: invoice date + 30 days, then to the end of that month. 15 January 2026 + 30 days = 14 February 2026 → end of that month = 28 February 2026 (Saturday).

A French ministerial answer describes these two methods for "45 jours fin de mois" (45 days end of month) and says the parties should agree one in advance; it does not deal with other periods. The same two readings exist for 30 Days EOM as a matter of arithmetic. See the quote on the 45 days EOM page.

30 Days EOM due dates for 2026

Method 1 gives the same due date for every invoice dated in the same month. Method 2 depends on the invoice day, so it is shown for invoices dated the 1st and the 15th.

Invoice monthMethod 1 (any invoice date)Method 2, invoice on the 1stMethod 2, invoice on the 15th
January 20262 March 2026 (Mon)31 January 202628 February 2026
February 202630 March 2026 (Mon)31 March 202631 March 2026
March 202630 April 2026 (Thu)31 March 202630 April 2026
April 202630 May 2026 (Sat)31 May 202631 May 2026
May 202630 June 2026 (Tue)31 May 202630 June 2026
June 202630 July 2026 (Thu)31 July 202631 July 2026
July 202630 August 2026 (Sun)31 July 202631 August 2026
August 202630 September 2026 (Wed)31 August 202630 September 2026
September 202630 October 2026 (Fri)31 October 202631 October 2026
October 202630 November 2026 (Mon)31 October 202630 November 2026
November 202630 December 2026 (Wed)31 December 202631 December 2026
December 202630 January 2027 (Sat)31 December 202631 January 2027

Weekdays are shown for method 1. Calendar days are counted; whether a due date on a weekend moves to the next business day is for your contract to say.

How many days 30 Days EOM gives

Between 30 and 60 days after the invoice date, under either method. The shortest case is an invoice dated on the last day of a month: 31 January 2026 → 2 March 2026, exactly 30 days. The longest is an invoice dated on the 1st of a 31-day month: 1 January 2026 → 2 March 2026, 60 days (method 1).

30 Days EOM vs Net 30

Net 30 counts 30 days from the invoice date; 30 Days EOM counts from the end of the invoice month, so it is never earlier. The same invoice dates give:

Invoice dateNet 3030 Days EOM, method 130 Days EOM, method 2
2 January 20261 February 20262 March 202628 February 2026
15 January 202614 February 20262 March 202628 February 2026
25 January 202624 February 20262 March 202628 February 2026
31 January 20262 March 20262 March 202631 March 2026

For any date on Net 30, use the Net 30 calculator.

30 Days EOM in Excel or Google Sheets

With the invoice date in cell A2 (format the result cell as a date):

  • Method 1: =EOMONTH(A2,0)+30
  • Method 2: =EOMONTH(A2+30,0)

Microsoft's Excel help says EOMONTH "Returns the serial number for the last day of the month that is the indicated number of months before or after start_date" (Microsoft Support); Google Sheets uses the same syntax, EOMONTH(start_date, months), and "Returns a date representing the last day of a month which falls a specified number of months before or after another date" (Google Docs Editors Help). Checked 2026-09-25.

How to write 30 Days EOM on an invoice

Replace [due date] with the date you worked out. The date removes any doubt about the counting method.

  • Payment terms: 30 days end of month (30 days EOM). Payment is due by [due date].
  • Please pay within 30 days of the end of the invoice month, by [due date].
  • Terms: Net 30 EOM, counted from the last day of the invoice month. Due date: [due date].

Filled in for an invoice dated 15 January 2026 (method 1): "Payment terms: 30 days end of month (30 days EOM). Payment is due by 2 March 2026."

Put 30 Days EOM on an invoice with our generator

  1. Open the free invoice generator and enter the invoice date in the Date field.
  2. Type the due date into Due Date (the field starts empty). The generator does not work out EOM dates; use the table above or the due date calculator.
  3. The Terms & Conditions box starts with sample text: replace it with one of the 30 Days EOM lines above.
  4. Click Preview & Download to check the PDF, then download it.

The generator is free and unmetered for normal use; an anti-abuse cap of 20 PDFs per device per day (200 per IP) applies, well above ordinary use. A one-line "Created free with myinvoicetemplate.com" credit is switched on by default and one free checkbox in the settings turns it off. Your draft is stored in your own browser on this device, so download and keep the PDF you need.

30 Days EOM FAQ

What does "Net 30 after EOM" mean?

It means the 30 days start after the end of the month (EOM) in which the invoice is dated, not on the invoice date. Counting from the last day of the month, an invoice dated 15 January 2026 is due on 2 March 2026. A second reading counts 30 days from the invoice date and then goes to the end of that month, which gives 28 February 2026.

Is 30 days EOM the same as Net 30?

No. Net 30 counts 30 days from the invoice date; 30 days EOM counts from the end of the invoice month, so it is never earlier than Net 30. The comparison table on this page shows both terms on the same invoice dates.

How many days does 30 days EOM give the customer?

Between 30 and 60 days after the invoice date under either counting method: 30 days when the invoice is dated on the last day of a month, up to 60 days when it is dated on the 1st of a 31-day month (counting from the end of the month).

Not legal advice. The dates on this page are calendar arithmetic. Legal texts are quoted with the date we last checked them; confirm the rules that apply to your contract at the official source.