What Does Net 30 Mean on an Invoice?

Net 30 means the full amount of the invoice is due within 30 days of the invoice date. "Net" refers to the net (total) amount, with no discount taken.

An invoice dated 1 September with Net 30 terms is due on 1 October.

How to count it

Count 30 calendar days from the invoice date. Weekends and holidays count. Most people treat the invoice date as day zero, so:

Invoice date	Net 30 due date
1 September	1 October
15 September	15 October
31 January	2 March (1 March in a leap year)
20 December	19 January

If the due date falls on a weekend, many businesses pay the next business day. If that matters to you, say so on the invoice, or better, just print the due date.

Net 30 vs its cousins

Term	Due
Net 30	30 days after the invoice date
Net 30 EOM	30 days after the end of the month the invoice is dated
Net 30 from delivery	30 days after the goods or service were delivered
2/10 Net 30	2% discount if paid in 10 days, full amount in 30
Net 15 / Net 45 / Net 60	Same idea, different number of days

The EOM version surprises people. An invoice dated 3 September with "Net 30 EOM" isn't due until 30 October: the end of September plus 30 days. Large companies like it because it batches payments. Small suppliers sometimes don't realize they've agreed to it.

Why Net 30 is so common

It fits the way most businesses run: a monthly accounting cycle, invoices approved in batches, and payment runs once or twice a month. Thirty days gives the customer time to check the invoice, get approval and schedule the payment without chasing.

It's also, historically, how trade credit worked between suppliers and retailers: the customer sells the goods before they have to pay for them.

The downside for small businesses

Net 30 is effectively a 30-day interest-free loan to your customer. For a freelancer or small business with thin cash reserves, that's significant, and "30 days" often turns into 40 or 50 in practice.

Things that help:

• Use shorter terms where you can. Net 14 is widely accepted by small businesses. Consumers can reasonably be asked to pay on receipt.
• Invoice immediately. Net 30 from a late invoice is really Net 45.
• Take deposits on larger or longer projects. See deposit invoices.
• Offer an early payment discount only if cash flow really needs it; see 2/10 Net 30.
• State late payment terms so day 31 has a consequence. See late fees on invoices.

"Net 30" on a business credit account

You'll also see "Net 30 accounts" in the context of business credit: suppliers that let you buy now and pay in 30 days, and report your payment history to business credit bureaus. It's the same term applied from the buyer's side. If you're the one being offered Net 30 by a supplier, paying on time helps build your business's credit profile.

How to write it on your invoice

Put both the term and the date:

Terms: Net 30. Payment due by 15 October 2026.

In the generator, choose Net 30 in the payment terms and the due date is filled in from your invoice date automatically.

Quick answers

Does Net 30 include weekends? Yes, it's calendar days.

Is Net 30 legally required? No. It's a commercial agreement. Some laws set defaults when nothing is agreed; in the UK and EU, 30 days is the default for B2B payments without agreed terms.

Can I charge interest after 30 days? If your agreement allows it, or your local law provides for it. In the UK, statutory interest is available on late B2B payments. Elsewhere, put it in your terms first.

Is Net 30 the same as "30 days"? In practice, yes. "Payment within 30 days" is clearer to people outside accounting, so some businesses prefer it.