Net 30 Payment Terms: What They Mean and Which Terms to Use

A new client sends over their supplier form, and one line says "Our standard payment terms are net 30." Or you are about to send your first invoice and the template has a blank next to "Terms". Either way, the few words you put there decide when the money reaches your account, and how much room the client has to drift past it.

This explainer covers what net 30 and the other common terms mean, how to count the days, which terms suit freelancers, how to write them on an invoice, and what the law says about charging interest when a client pays late. If you are putting together your first invoice, the step-by-step guide to invoicing as a freelancer covers everything else on the page.

What does net 30 mean?#

Net 30 means the client must pay the full amount of the invoice within 30 days. "Net" is the total after any discounts, and "30" is the number of calendar days the client has. Unless your agreement says otherwise, the days are counted from the invoice date.

Calendar days include weekends and public holidays. Some worked examples:

• Invoice dated Thursday 1 October 2026: due Saturday 31 October 2026.
• Invoice dated 15 October 2026: due 14 November 2026.
• Invoice dated 31 October 2026: due 30 November 2026.

A quick way to count: add 30 to the day of the month, then subtract the number of days in that month. For 15 October, 15 + 30 = 45, and October has 31 days, so the invoice is due on 14 November.

Notice the first example lands on a Saturday. Some clients will pay on the Friday, others on the Monday after, depending on their bank and when they run payments. That is the main reason to write an actual date on the invoice rather than only "Net 30": it removes the arithmetic, and with it the argument.

When does the 30-day clock start?#

The invoice date is the usual starting point, but it is not the only one, and larger clients often use a later one:

• Invoice date. The standard reading of net 30. The clock starts on the date printed on the invoice.
• Date received. Some clients count from the day the invoice reaches their accounts team. An invoice you date 1 October but only send on the 8th is then due on 7 November.
• Date approved. Some companies start counting only once the invoice is approved internally, which can add days you never see.
• End of month. With EOM terms, the clock starts at the end of the month the invoice is dated in (see the table below).

The law has defaults for when nothing was agreed. In the UK, gov.uk says a payment from a business client is late 30 days after the customer gets the invoice, or 30 days after you provide the service if that is later. In the EU, Your Europe says that if the contract fixes no payment period, interest becomes payable 30 calendar days after the client receives your invoice. In New York City, if a freelance contract worth $800 or more has no payment date, the client must pay within 30 days after you complete the work.

Here is how a "net 30" job can quietly stretch to almost seven weeks:

Every step is normal and nobody did anything wrong. The fix is on your side: invoice the day the work ends, send it to the person who pays it, and print the due date.

What are the common payment terms?#

EOM terms are worth a second look before you accept them. An invoice dated 2 October on net 30 EOM is due on 30 November, 59 days later. If a client offers "net 30 EOM", ask for plain net 30, or invoice right at the end of each month so the gap is as short as it can be.

Net 14 and net 15 are used almost interchangeably. Pick one and use it consistently.

How does 2/10 net 30 work?#

The first number is the discount, the second is the discount window in days, and "net 30" is the normal deadline. On a $5,000 invoice dated 1 October 2026:

• Paid by 11 October: the client pays $4,900.
• Paid between 12 and 31 October: the client pays $5,000.

It looks like a small gesture, but it is a very good deal for the client. Giving up $100 to be paid 20 days sooner works out at roughly 37% a year (2 ÷ 98 × 365 ÷ 20). That is why finance teams take these discounts when they can, and why it costs you more than it seems.

For most freelancers, an early payment discount solves one specific problem: a large invoice, a client who usually pays slowly, and a month where cash matters more than margin. The rest of the time, shorter terms or a deposit get you paid sooner without giving anything away.

Which payment terms should a freelancer use?#

Shorter is usually better, and not only for cash flow. A short due date keeps your invoice near the top of someone's list, and it makes a late payment obvious sooner, while the work is still fresh for everyone.

A practical starting point:

• Small one-off jobs and new private clients: due on receipt or net 7.
• Ongoing work for small businesses: net 14.
• Larger companies with an accounts payable team: net 30 is often the shortest their system allows. Ask before you start, because it may be fixed in their supplier set-up.
• Big projects: a deposit and staged invoices, whatever the terms. Deposit invoices shows how to split them.
• Net 60 or longer: only with a reason you accept, such as a higher rate.

Do the cash-flow maths before you agree. If you bill $6,000 at the end of each month on net 30, last month's $6,000 is outstanding for the whole of this month while you do this month's work. On net 14, it is paid by the middle of the month.

When a big client insists on net 45 or net 60, you still have moves: ask for net 30, bill monthly instead of at the end of the project, take a deposit, or price the wait into your rate.

How do you write payment terms on an invoice?#

Agree the terms in your contract, proposal or confirming email first. The invoice should repeat them, never introduce them. Then make sure the invoice shows three things:

1. The due date as a real date, next to the invoice date.
2. A terms line that says how many days, and how to pay.
3. Your late payment terms, only if they are in your agreement.

A sample block you can adapt:

Invoice date:  1 October 2026
Due date:      15 October 2026 (net 14)

Payment terms: Payment due within 14 days of the
invoice date by bank transfer. Please quote invoice
number INV-202610-004 as the payment reference.
Late payment: interest as set out in our agreement
dated 3 September 2026.

Short versions for other terms:

• "Payment due on receipt."
• "Net 30. Due 31 October 2026."
• "2% discount if paid by 11 October 2026; otherwise $5,000 due by 31 October 2026."
• "50% deposit due before work starts; balance due within 14 days of delivery."

Can you charge interest if a client pays late?#

Sometimes by law, otherwise only if your contract says so. The rules depend on where you and your client are.

UK, business clients. If another business pays you late, you can claim statutory interest of 8% plus the Bank of England base rate, unless your contract sets a different rate. On top of the interest, you can charge a fixed sum for the cost of recovering the debt, once for each payment:

A worked example: a client owes £2,000 and pays 30 days late, with the base rate at 3.75% (where it stood in September 2026). Statutory interest is then 11.75% a year, so £2,000 × 0.1175 = £235 a year, or about 64p a day. Thirty days late adds 30 × £0.64 = £19.20 in interest, plus the £70 fixed sum. gov.uk says to send a new invoice if you decide to add interest.

UK law also limits payment periods. If you agree a payment date with a business, it must usually be within 60 days (30 days for public authorities), and a longer period has to be fair to both businesses. A Commercial Payments Bill was going through Parliament in autumn 2026 that would change parts of this, so check gov.uk for the current rules before you charge.

EU. Your Europe says you can charge the late payment interest rate agreed in your contract, or the statutory rate if none was agreed, plus a flat compensation fee of €40 for each invoice paid late (more in some countries). The statutory rate is set per country, and Your Europe lists the current rate for each one.

US and elsewhere. Late fees and interest generally come down to what your contract says and what your state or country allows, and many places limit how much interest can be charged. Write the fee into your agreement, keep it reasonable, and check your local rules.

Wherever you are, a late fee the client first hears about on an overdue invoice is hard to collect and easy to resent. How to get clients to pay on time covers how to agree one up front.

Setting due dates in BillBee.work#

BillBee.work, a free invoice maker for freelancers, prints both the invoice date and the due date on every invoice. The due date defaults to 7 days after today, or 7 days after the end of the month when you auto-fill the invoice from a logged month, and you can change it to whatever you agreed.

Three things to know:

• There is no saved "Net 30" setting. You set the due date on each invoice. If a client is on net 30, pick the date 30 days after the invoice date each time.
• Overdue is automatic. Once the due date passes and you have not marked the invoice paid, BillBee.work marks it overdue, the invoice shows an OVERDUE stamp, and the dashboard counts it. Mark it paid when the money arrives.
• Your terms line goes in Payment Details. This free-text field in your profile prints on every invoice, so it suits a general line such as "Payment due within 14 days by bank transfer. Please quote the invoice number." Because it is the same on every invoice, put anything client-specific, such as an early payment discount, in the email you send with the invoice link.

Clients open the invoice from a share link without creating an account. BillBee.work does not send the email for you, so paste the link into your own message.

What should you do when net 30 passes?#

Send a short, friendly reminder the day after the due date, then follow up on a fixed schedule rather than when you happen to remember. Payment reminder emails has six templates, from a polite nudge to a final notice.

If the same client is late every month, change the terms for future work: shorten them, ask for a deposit, or bill in stages. Tell them in writing before the next job starts, not on the next invoice.

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