What Does Net 30 Mean on an Invoice?

The definition

"Net 30" means payment is due 30 calendar days after the invoice date. For example, a $2,500 invoice for a design project, dated April 1st with Net 30 terms, is due in full by May 1st. "Net" refers to the full amount owed, after any discount already shown on the invoice — it doesn't imply a partial payment. The invoice generator calculates the due date automatically once you set Net 30 as your payment term.

How to calculate a Net 30 due date

Count 30 calendar days forward from the invoice date, weekends and public holidays included: the day after the invoice date is day 1, and day 30 is the due date. Because months run from 28 to 31 days, Net 30 only lands on the same date next month when the invoice is dated in a 30-day month:

A due date that falls on a weekend or a public holiday doesn't move by itself. If you'd rather not have a Sunday due date, switch the term to a custom date on a weekday — the generator accepts either, and prints both the term and the exact due date on the PDF.

When the 30 days start

By convention, the count starts from the invoice date printed on the invoice. Two situations can change that:

• Your client's purchasing terms say otherwise. Some larger companies count 30 days from the day they receive your invoice, or from delivery. If that's written into their purchase order or supplier agreement, settle which date applies before you start the work, not once the payment is late.
• No payment date was agreed at all. In the UK, the law then says a business-to-business payment is late 30 days after the customer gets the invoice, or after you deliver the goods or provide the service if that's later (GOV.UK — late commercial payments). US federal agencies work on a similar clock: when a contract doesn't set a payment date, payment is generally due 30 days after the agency receives a proper invoice (5 CFR 1315.4).

Either way, printing the exact due date next to the term removes the question entirely.

Net 30 EOM, 2/10 Net 30 and other variations

Net 30 has a few close relatives that change the due date. Here's how each one plays out for an invoice dated September 10, 2026:

"EOM" isn't used consistently — some businesses mean the end of the month itself — so if you use it, write the due date out too. See invoice payment terms for when an early-payment discount like 2/10 Net 30 is worth the margin.

How to write Net 30 on an invoice

Put the term and the exact due date next to the invoice date, so your client never has to count:

Invoice date: April 1, 2026 · Terms: Net 30 · Due date: May 1, 2026

Then add a line in the notes or terms field. A few wordings that work:

• "Payment due within 30 days of the invoice date (Net 30)."
• "Net 30 — please pay by May 1, 2026 by bank transfer to the account below."
• For UK business clients: "Payment due within 30 days. We reserve the right to claim interest and compensation under the Late Payment of Commercial Debts (Interest) Act 1998."
• For US clients, if you charge a late fee: "Net 30. A late fee of 1.5% per month applies to balances unpaid after the due date." Check that the rate you pick is allowed in your state.

Is Net 30 good for you?

It depends on your cash flow needs. Net 30 is often expected by larger clients and agencies, and offering it can make you easier to work with. But waiting 30 days for payment isn't always realistic for freelancers or small businesses that need cash sooner. Shorter terms like Net 15 or due on receipt are perfectly normal, especially for new clients — the freelance invoice template starts with a 15-day term you can change.

Where Net 30 comes from

It's a holdover from traditional B2B accounting, where companies process payments in batches, often on a monthly cycle. For a business paying dozens of vendors, a standard 30-day window is easier to manage than tracking a different due date for every invoice. It has since become the legal fallback too: as shown above, both UK late-payment law and US federal payment rules land on 30 days when nothing else was agreed.

Net 30 vs Net 15 vs Net 60

The number is simply the number of days. Net 15 is faster (and friendlier to your cash flow), Net 60 is slower and more common with larger enterprise clients or government contracts. See our full breakdown of payment terms for how to choose.

Extending Net 30 to a new client

Offering Net 30 means fronting the cost of the work for a month before you see payment — reasonable for a client with a track record, riskier for one you've never billed before. A middle ground works well for new relationships: ask for a partial deposit upfront, or start with shorter terms (Net 15 or due on receipt) for the first invoice or two, then move to Net 30 once they've paid on time. Larger companies with established accounts-payable processes are usually a safer bet for Net 30 from the start than an individual or a brand-new small business.

What if a client is late on Net 30?

Send a polite reminder shortly after the due date passes — most delays are simple oversight rather than refusal to pay. If it happens repeatedly with the same client, consider shortening their terms on future invoices rather than continuing to offer Net 30.

What the law says about a late Net 30 payment

In the UK, you don't need to write anything special into your terms to be protected: the Late Payment of Commercial Debts (Interest) Act 1998 entitles you to statutory interest of 8% plus the Bank of England base rate on an overdue business-to-business invoice automatically (GOV.UK — statutory interest rate). You can also claim a fixed sum towards recovery costs, once per payment: £40 for a debt up to £999.99, £70 from £1,000 to £9,999.99, and £100 for £10,000 or more (GOV.UK — claim debt recovery costs).

In the US, there's no federal equivalent for private clients — a late fee only applies if you stated one in your terms before the client accepted the invoice, which is why writing "Net 30, 1.5% monthly late fee after due date" explicitly matters more without a legal backstop to fall back on. Federal agencies are the exception: under the Prompt Payment Act, "in most cases, when an agency pays a vendor late, the agency must pay interest" (Bureau of the Fiscal Service — Prompt Payment).

Ready to put Net 30 on your own invoice? How to make an invoice covers the full process, step by step, or see how to invoice as a freelancer if Net 30 isn't the right fit for your situation.