Net 30 is the default freelance payment term for one reason: it’s what clients prefer. It gives them a 30-day float on your money. That’s great for their cash flow. For yours, it means roughly half your monthly revenue is sitting in someone else’s account at any given moment.
The freelancers who switch to Net 15, even on a fraction of their projects, find out something quickly: most clients don’t push back. They pay within 15 days because that’s what the invoice says. The ones who do push back reveal themselves as payment-delay clients, which is useful to know early.
Here’s the actual breakdown of when to use each term, what the numbers mean for your cash flow, and how to negotiate when a client refuses.
What payment terms actually mean for your bank account
“Net 30” doesn’t mean “invoices due in a month.” It means “the client has 30 days from invoice date to pay, and most of them will use every single one of those days.” In practice, Net 30 often becomes Net 35 or Net 40 once processing time and approval cycles are factored in.
Here’s what that looks like in real numbers. You complete a $4,000 project on May 1 and send the invoice. On Net 30, you get paid around June 1. On Net 15, you get paid around May 16. That’s $4,000 sitting in the client’s account for an extra two weeks for no reason other than the number on your invoice.
At $8,000/month in freelance revenue, the difference between Net 15 and Net 30 terms is roughly $4,000 sitting in a client’s account at any given time. That’s your emergency fund, not theirs.
Across a full year, Net 30 means you’re perpetually floating your clients an interest-free loan equal to roughly one month of your revenue. Switching to Net 15 recovers half of that float immediately.
The real cost of Net 30 vs. Net 15
Run the math on your own numbers. Take your average monthly revenue and divide by two. That’s approximately how much extra cash you’d have on hand right now if you billed on Net 15 instead of Net 30.
For a freelancer earning $6,000/month: the difference is $3,000. That covers a slow month. It covers a software invoice you weren’t expecting. It means you don’t have to chase a late payment while watching your account balance drop toward zero.
The other cost is follow-up labor. Every late payment costs 30–90 minutes in email threads, mental load, and awkward conversations. Net 15 doesn’t eliminate late payments, but it compresses the window. A client who’s 7 days late on Net 15 is still less overdue than a client who’s 7 days late on Net 30.
When to use each payment term
The right payment terms depend on project size, client type, and your leverage in the relationship.
Due on receipt, Use this for the first invoice with a brand-new client, or for small amounts ($500 and under). “Due on receipt” is not aggressive; it’s standard for small transactions. Most new clients expect it, and it sets a tone of professionalism from the first touchpoint.
Net 15. The right default for most freelancers on most projects. Use it for projects under $5K, for any project where you’re paying subcontractors (and therefore have your own cash obligations), and for any new client you don’t have payment history with. Net 15 gets minimal pushback because most clients process invoices faster than 30 days anyway, the term just makes it official.
Net 30, Appropriate for established clients with a track record of paying on time, for larger projects ($10K+) where the client may have an actual approval process, and when a client explicitly asks. If a long-term client who’s never been late wants Net 30, that’s a reasonable accommodation for the relationship.
Net 60, Enterprise companies and large agencies with procurement departments. They’re not going to change their AP process for you. Accept Net 60 when the client is worth it, but adjust your rate upward slightly to account for the extended float. A 3–5% rate premium for Net 60 clients is reasonable and rarely contested when framed correctly.
The exact language to add to your invoices
Copy this and put it on every invoice, every time:
“Payment due within 15 days of invoice date. Late payments are subject to a 1.5% monthly fee on the outstanding balance.”
That sentence does three things: states the due date clearly, signals that you enforce terms, and gives clients a reason to pay before the fee kicks in. Put it in your proposal and in your invoice. Once, in the proposal only or the invoice only, is not enough. Both touchpoints matter.
How to negotiate when a client pushes back
You send a Net 15 invoice. The client says: “We pay Net 60. That’s our standard process.”
Your response: “Our standard is Net 15. For a Net 60 cycle, I’d need to add a 3% extended-payment fee to account for the cash flow difference. I’m happy to do either, which works better for you?”
Most clients who try Net 60 as an opener will land on Net 30 when faced with this choice. Some will pay Net 15 without discussion. A few will accept the extended fee and stay on Net 60, which is fine, because you’ve now priced in the cost.
The key is presenting it as a business decision, not a complaint. You’re not frustrated; you’re pricing the service correctly for the payment structure. That framing keeps the conversation professional and puts the choice back with the client.
One more scenario: a new client who says “we don’t do deposits, and we pay Net 45.” That’s two concessions they’re asking for. Give at most one. Either accept the payment terms and require a deposit, or accept no deposit and hold firm on Net 15. Both are reasonable. Neither is worth accepting both conditions.
Related reading: If clients are consistently paying late regardless of terms, see How to Add a Late Payment Fee to Your Invoices for the 3-step follow-up sequence and the exact script for enforcing fees without blowing up the relationship.
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