Invoice Payment Terms

What are invoice payment terms?

Payment terms are the conditions under which a buyer agrees to pay a seller. On an invoice, they typically appear as a short phrase — “Net 30”, “Due on receipt”, “2/10 Net 30” — that tells the customer how long they have to pay, whether any discount applies for early payment, and what happens if they are late. Picking the right terms is one of the highest-leverage decisions a small business makes: too short and customers push back, too long and your cash flow suffers.

Payment terms sit alongside the due date on the invoice. The due date is the actual date the payment is expected; the terms are the rule that produced the due date. State both, so the customer can see the rule and the specific date in one glance.

Net 7, 14, 30 and 60 explained

The “Net” in payment terms means the full amount is due that many days after the invoice date. Net 7 means payment is due in seven days; Net 30 means it is due in thirty. The number is a window, not a target — you are entitled to the money any time inside the window, and the customer owes it no later than the last day of the window.

• Net 7 / Net 14: Short terms, typically used for small invoices, repeat work, or customers who pay slowly unless nudged. Forces quick payment but can strain customer relationships if applied to larger invoices.
• Net 30: The default in most B2B billing. Standard for most professional services and small-business invoices. Expected by most corporate customers and their accounts payable teams.
• Net 60 / Net 90: Long terms, usually imposed by large corporate customers on their suppliers. Eats your cash flow; consider factoring or financing if you regularly accept them.
• Due on receipt: Payment is expected as soon as the customer receives the invoice. Common for one-off jobs, retail-style service work, and invoices issued after delivery of low-value goods.
• CIA (Cash in advance): Payment before delivery. Used for new customers, large orders, or work that requires expensive materials up front.

Early-payment discounts

An early-payment discount offers a small percentage off the invoice if the customer pays within a short window. The standard notation is “2/10 Net 30”: 2% discount if paid within 10 days, otherwise the full amount is due within 30 days. The trade-off is between cash today and a slightly smaller amount — and for many businesses, the cash is worth more than the discount cost.

A 2/10 Net 30 offer effectively lets the customer borrow the invoice amount for 20 extra days at an annualised cost of roughly 37% — which is well above most commercial borrowing rates. In other words, the discount looks cheap to you as a seller but is expensive for the customer to ignore. That asymmetry is why early-payment discounts work: customers who pay promptly take the discount, and you get the cash in 10 days instead of 30.

Late fees and interest

A late fee or late-payment interest clause puts a cost on missing the due date. Common patterns are a flat fee per late invoice, a monthly interest rate on the outstanding amount, or both. Many jurisdictions cap the rate you can charge; check the local rule before applying one. A typical setup is 1–1.5% per month on the outstanding balance, plus a small fixed admin fee.

State the late-fee policy on the invoice itself, not in a separate document the customer can claim they never saw. A single line in the terms section — “Late payments incur 1.5% per month from the due date” — is enough to make the clause enforceable in most disputes. Enforcing it is a separate question: many businesses apply it only on seriously overdue invoices and waive it for first offences to preserve the customer relationship.

How to pick terms that get you paid faster

The single biggest influence on payment speed is the due date itself. Shorter terms get paid faster on average — but only if the customer accepts them. Push too hard and you strain the relationship; push too little and you finance their working capital. A practical baseline: Net 14 for small invoices and new customers, Net 30 for established B2B customers, Net 7 or due-on-receipt for one-off jobs under a threshold value.

• Make terms explicit: State the due date and the terms on every invoice. Never leave it to the customer to guess.
• Send promptly: A Net 30 invoice sent a week late is effectively a Net 23 invoice. Send the day the work is delivered.
• Offer early-payment discount: 1–2% off for payment within 10 days is a cheap way to shift the average payment time.
• Make payment frictionless: Include every method you accept, with full account details and a QR code for mobile wallets.
• Follow up early: A friendly reminder two days before the due date beats a chase ten days after. Most late payments are oversights, not refusals.
• Track the average: Watch the days-sales-outstanding (DSO) metric. If it drifts up, tighten the terms for new invoices.

Common pitfalls

A few mistakes cost real money. Picking terms that the customer ignores — “Net 30” on an invoice they pay in 60 — sets a precedent that is hard to break. Sending the invoice late and expecting prompt payment destroys the goodwill you might have had. Not stating the late-fee policy on the invoice itself makes it unenforceable when you try to apply it. And accepting Net 60 or longer from large customers without factoring or financing the gap starves your own cash flow.

Frequently asked questions