Net 28 Calculator: Due Date for 28-Day Payment Terms

Paid late? Amount and yearly interest rate (optional)

Example: an invoice dated 14 October 2026 on Net 28

Due date Wednesday, 11 November 2026

Counting
14 October 2026 + 28 calendar days

Wording with this date: Payment terms: Net 28. Payment is due within 28 days of the invoice date, by 11 November 2026.

Every common term for this invoice date

Due dates under each payment term for the invoice date in the calculator
TermDue dateDayFrom 14 Oct 2026
Net 7 Wed Wed in 7 days
Net 10 Sat Sat in 10 days
Net 15 Thu Thu in 15 days
Net 21 Wed Wed in 21 days
Net 30 Fri Fri in 30 days
Net 45 Sat Sat in 45 days
Net 60 Sun Sun in 60 days
Net 90 Tue Tue in 90 days
Net 120 Thu Thu in 120 days
30 days EOM Mon Mon in 47 days
45 days EOM Tue Tue in 62 days
60 days EOM Wed Wed in 77 days
90 days EOM Fri Fri in 107 days

Net 28 due dates for 2026

Invoice dateNet 28 due dateWeekday
15 January 2026 12 February 2026 Thursday
15 February 2026 15 March 2026 Sunday (weekend)
15 March 2026 12 April 2026 Sunday (weekend)
15 April 2026 13 May 2026 Wednesday
15 May 2026 12 June 2026 Friday
15 June 2026 13 July 2026 Monday
15 July 2026 12 August 2026 Wednesday
15 August 2026 12 September 2026 Saturday (weekend)
15 September 2026 13 October 2026 Tuesday
15 October 2026 12 November 2026 Thursday
15 November 2026 13 December 2026 Sunday (weekend)
15 December 2026 12 January 2027 Tuesday

Net 28 wording to copy

  • Payment terms: Net 28. Payment is due within 28 days of the invoice date, by [due date].
  • Please pay the full amount within 28 days of the invoice date (due [due date]).
  • Terms: 28 days net. Due date: [due date].
About these dates

Also written as: 28 days · 28 days net · payment within 28 days · Net 28 days

EOM rows start counting when the invoice month ends (method 1); the EOM guide shows the second reading. Dates are calendar arithmetic: weekends and holidays are not skipped.

Replace [due date] with the date from the calculator.

Not legal advice. Legal texts are quoted as of the date shown; confirm the rules for your contract at the official source.

due date = invoice date + 28 calendar days. The day after the invoice date is day 1, and day 28 is the due date: the last day to pay on time, unless the contract says otherwise. 28 days is exactly 4 weeks, so the due date always falls on the same weekday as the invoice date.

This is date arithmetic only. Where a law sets its own payment period, it can count from a different event; the rules we have verified are quoted in the payment terms guide.

Late interest in the calculator is simple interest: amount × yearly rate × days late ÷ 365, where the days late are the days after the due date up to and including today. It is arithmetic on the rate you enter, not a statement that the rate is allowed.