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Net 30 payment terms: what they mean and when to use them

By Apsis team · November 2, 2026

If you bill other businesses, you've seen “Net 30” on invoices, purchase orders and vendor forms. It's one of the most common phrases in B2B billing, and one of the most misunderstood. Here's what it actually means, how it compares with other terms, and how to choose terms that keep your cash coming in.

What “Net 30” means

Net 30 means the full amount of the invoice is due 30 calendar days after the invoice date. “Net” is the total after any discounts or credits; “30” is the number of days the customer has to pay it. An invoice dated March 1 on Net 30 terms is due March 31.

A few details trip people up:

• The clock usually starts on the invoice date, not the day the customer opens the email or the day the work started. That's one more reason to invoice as soon as the work is done.
• Calendar days, not business days. Weekends and holidays count unless your agreement says otherwise.
• “Net 30” is not a due date. Print the actual date on the invoice. “Due March 31” gets paid more reliably than a phrase the customer's bookkeeper has to work out.

Common payment terms, side by side

• Due upon receipt: payment is expected as soon as the invoice arrives. Common for small one-off jobs and new clients.
• Net 14 or Net 15: two weeks to pay. A good middle ground for consultants and small agencies.
• Net 30: the B2B default. Many larger companies run their payables on a 30-day cycle and expect it.
• Net 45, 60 or 90: longer terms that big customers sometimes require. They're effectively a short loan from you to your client.
• 2/10 Net 30: a 2% discount if paid within 10 days, otherwise the full amount in 30. It can speed up payment, but 2% off every invoice adds up quickly, so do the math before offering it.

Should you use Net 30?

Net 30 isn't good or bad. It's a trade-off between being easy to buy from and waiting for your money. Some questions to ask:

• Who is the customer? A larger company with an accounts payable department may simply pay on its own cycle, whatever your invoice says. Fighting that rarely works; pricing for it does.
• How big is the job? On a large or long project, a deposit up front plus Net 30 on the balance protects you better than Net 30 on the whole thing.
• Can your cash handle the wait? If you pay contractors or rent before your clients pay you, every extra 15 days of terms is cash you're carrying. Look at your own bills before you agree to Net 60.
• Is this a new relationship? It's reasonable to start a new client on shorter terms and extend them once they've paid on time for a few months.

Whatever you choose, agree on it before the work starts and put it in your proposal or contract, not just on the invoice.

Making Net 30 actually mean 30

Terms only help if customers follow them. A few habits make a big difference:

1. Invoice the same day. Waiting a week to send the invoice turns Net 30 into Net 37.
2. Get the details right the first time. Ask whether the client needs a PO or job number on the invoice and who should receive it. A missing PO number is one of the most common reasons a B2B invoice sits unpaid.
3. Send a heads-up before the due date. A short note a few days early catches problems while there's still time to fix them.
4. Follow up on a schedule. A friendly reminder on the due date and another a week later, then a phone call. Consistency matters more than tone.
5. Send statements to repeat clients. A monthly statement lets their bookkeeper pay several open invoices at once.
6. Watch your aging. If a client keeps drifting past 30 days, talk about it before you take on more work. Our guide to reading an A/R aging report shows what to look for.

A note on late fees

If you want to charge interest or a late fee on overdue invoices, state it in your agreement before the work starts and check what's allowed where you and your client operate. Many small firms find that clear terms and steady reminders do the job without the friction a fee can cause.

How Apsis helps

In Apsis, each invoice carries your payment terms: due upon receipt, Net 14, Net 30, or custom. You can put the client's PO or job number in the invoice note and send it from your own Gmail address. Apsis can send up to four automatic reminders, timed from the send date or the due date, with your client's contacts copied, and they stop as soon as the invoice is paid or credited. Each customer's page shows their outstanding balance alongside contacts, invoices, payments and a timeline of emails and reminders, and you can print or email statements for clients with more than one open invoice.

Apsis is $19/month for your first company with three users and a free accountant seat for your CPA, after a 30-day free trial. It doesn't run payroll, so if you have employees, keep your payroll service and record payroll in your books. Try Apsis free for 30 days.