Invoice Payment Terms: Net 30, Due on Receipt, and Beyond

“Net 30” is the most widely used payment term in business invoicing - and also one of the most commonly misunderstood. Here’s a complete guide to payment terms, when to use each one, and how to actually get paid on time.

Standard Payment Terms Explained

Due on Receipt

Payment is expected immediately upon receiving the invoice. In practice, this means within 1–3 business days.

Best for: Small projects, one-time clients, retail transactions, and situations where you have no established relationship.

Net 15 / Net 30 / Net 45 / Net 60

The number indicates how many calendar days the client has to pay after the invoice date.

• Net 15: Payment due within 15 days. Common for small businesses and freelancers.
• Net 30: The industry standard. Payment due within 30 days. Used by most B2B companies.
• Net 45: Common when working with larger companies that have slower payment cycles.
• Net 60: Typically demanded by large corporations, government agencies, and some enterprise clients.

Important nuance: “Net 30” means 30 days from the invoice date, not the date the client receives or opens the invoice. Make this clear on your invoices.

2/10 Net 30

A discount incentive: the client gets a 2% discount if they pay within 10 days; otherwise, the full amount is due in 30 days. Variations include 1/10 Net 30 (1% discount) and 3/10 Net 60.

The math works for both sides. For the buyer, paying 10 days early to save 2% is equivalent to earning a 36.7% annual return on that money. For the seller, giving up 2% to get paid 20 days faster improves cash flow dramatically.

End of Month (EOM)

Payment is due at the end of the month in which the invoice is received. An invoice sent on March 5th is due March 31st; one sent March 28th is also due March 31st.

Variation: Net 30 EOM - Payment due 30 days after the end of the month. An invoice dated March 15th would be due April 30th.

50% Upfront / Milestone-Based

Not a standard “term” but a payment structure. Common for projects:

• 50/50: 50% before work begins, 50% upon completion
• Thirds: 33% upfront, 33% at midpoint, 34% at completion
• Progress billing: Invoice at defined milestones (common in construction and software development)

Choosing the Right Payment Terms

Factors to consider:

Your cash flow needs. If you’re a small business with tight cash flow, shorter terms (Net 15 or Due on Receipt) keep money coming in faster.

Industry norms. Deviating significantly from industry standard can lose you clients. If everyone in your industry uses Net 30, demanding Due on Receipt feels aggressive.

Client size. Large corporations often have rigid AP (accounts payable) cycles - Net 30 or Net 45 may be non-negotiable. Smaller clients can often be more flexible.

Project size. For large projects ($10K+), milestone-based payments protect both parties. Never do a $50K project on Net 60 with no upfront payment.

Client relationship. New clients should get shorter terms. As trust builds, you can offer more generous terms.

Recommended terms by business type:

Business Type	Recommended Terms
Freelancer / Solopreneur	Net 15 or 50% upfront
Small B2B service business	Net 30
Construction / Contracting	Progress billing + retention
E-commerce / Retail	Due on Receipt
SaaS / Subscription	Prepaid monthly/annual
Enterprise consulting	Net 30 (negotiate from Net 45)
Government contracts	Net 30–60 (their terms, usually non-negotiable)

Late Payment Penalties

Are late fees legal?

Yes, in all US states. However, the amount must be “reasonable” - typically 1–2% per month (12–24% annualized). Some states cap the rate. Check your state’s usury laws.

How to structure late fees:

• Percentage-based: “1.5% per month on overdue balances” (most common)
• Flat fee: “$25 late fee for payments received after due date” (simpler for small invoices)
• Escalating: “1% after 30 days, 1.5% after 60 days, 2% after 90 days”

Making late fees enforceable:

Late fees must be disclosed before work begins - ideally in your contract or terms of service. Simply printing them on an invoice after the fact may not hold up. Best practices:

1. Include late fee terms in your signed contract or service agreement
2. Print the terms on every invoice
3. Send a reminder before the due date
4. Apply fees consistently (waiving them for some clients and not others weakens enforceability)

The psychology of late fees

Late fees serve more as a deterrent than a revenue source. Most clients will pay on time to avoid them. If you never enforce late fees, clients learn they’re empty threats.

How to Get Paid Faster

Before you invoice:

• Get terms in writing before starting work. A signed contract prevents “I didn’t agree to that” disputes.
• Require a deposit for new clients. 25–50% upfront shows commitment and reduces your risk.
• Verify the billing contact. Invoices sent to the wrong person or email sit in limbo for weeks.

When you invoice:

• Invoice immediately upon completion. Every day you delay sending the invoice is a day added to your payment timeline.
• Make it easy to pay. Include a “Pay Now” button or link. Accept credit cards, ACH, wire transfer - the more options, the fewer excuses.
• Be specific. Include PO numbers, project names, and reference numbers that match the client’s internal systems. Invoices that don’t match their records get flagged and delayed.
• Itemize clearly. Vague line items like “consulting services” invite questions. Specific items like “Website redesign - Phase 2 (40 hours @ $150/hr)” get approved faster.

After you invoice:

• Send a friendly reminder 5 days before the due date. “Just a heads up - Invoice #1024 is due on the 15th.”
• Follow up on Day 1 past due. Don’t wait. “Hi [Name], Invoice #1024 was due yesterday. Is there anything holding up payment?”
• Escalate at 15 days overdue. Call instead of emailing. Emails are easy to ignore; phone calls aren’t.
• Stop work at 30 days overdue. Never continue providing services to a client who hasn’t paid.

International Payment Terms

UK and EU

• Standard terms are similar: 30 days is common
• The EU Late Payment Directive allows businesses to charge interest on late payments (8% above the ECB reference rate)
• UK businesses can claim statutory interest of 8% plus Bank of England base rate

Common international complications:

• Currency - specify the currency on the invoice and who bears exchange rate risk
• Wire transfer fees - specify whether the sender or receiver pays bank fees (use “OUR” in SWIFT instructions if the client should pay all fees)
• VAT / GST - know whether you need to charge it and include registration numbers

When to Use Collections

If an invoice is 60–90+ days overdue and the client is unresponsive:

1. Send a formal demand letter - certified mail, referencing the contract terms and total amount with late fees
2. Try a collections agency - they typically charge 25–50% of the recovered amount, but 50% of something beats 100% of nothing
3. Small claims court - for amounts under $5,000–$10,000 (varies by state), this is a cost-effective option
4. Write it off - if the amount is small and recovery costs exceed the invoice, deduct it as a bad debt

The best collection strategy is prevention: clear terms, upfront deposits, and consistent follow-up.