Net 15 payment terms mean the client owes you in full within 15 calendar days of the invoice date — that's what "net 15" means, full stop. Not 15 business days. Not "by the middle of the month." Just 15 days on the calendar, starting the day you hit send. Of all the invoice payment terms you can print on a freelance invoice, it's the one we recommend as your default. On an invoice, it's written as plainly as this:
Payment Terms: Net 15 — Due July 16, 2026(invoice dated July 1)
Short enough to protect your cash flow, long enough that a new client doesn't feel rushed. Set it on your next invoice → — free, no signup, and the due date is calculated for you.
On a $3,000 invoice, Net 15 means the money should land roughly two weeks after you invoice — half the wait of Net 30, without the "pay me immediately" pressure of Due on Receipt. Net 14 is its lesser-known cousin: the client owes you in full 14 calendar days after the invoice date, no grace period, no "end of month" rounding. It sits between Due on Receipt and Net 15, and shows up mostly in bi-weekly billing cycles or contracts where someone rounded "two weeks" to a number.
Net 14 vs Net 15 at a Glance
| Net 14 | Net 15 | |
|---|---|---|
| Days to pay | 14 calendar days | 15 calendar days |
| Invoice dated October 1 is due | October 15 | October 16 |
| Business days or calendar days? | Calendar days | Calendar days |
| Where you'll see it | Bi-weekly billing, client POs that say "two weeks" | Most freelance invoices; our recommended default |
| Late fee can start | Day 15 | Day 16 |
| When to use it | The client's contract or PO already says Net 14 | Everything else |
The one-day difference doesn't change your cash flow. It changes whether your invoice matches the client's paperwork — if their PO says Net 14, write Net 14.
What Are Invoice Payment Terms?
Invoice payment terms are the conditions you set on an invoice that tell your client when and how to pay. They define the deadline, accepted payment methods, and any penalties for late payment. Getting these right is one of the simplest ways to improve your cash flow as a freelancer — whether that's Due on Receipt, Net 14, Net 15, or Net 30.
Think of payment terms as the rules of engagement for getting paid. Without them, clients default to paying whenever it suits them — which is often much later than you need. Tracking accounts receivable — the cash owed to you and when it's actually expected to land — is one of the most basic habits of running a solvent freelance business. The terms that control when that cash arrives are what make that number predictable instead of a guess.
Key takeaway: Clear, upfront payment terms set client expectations from day one, make follow-ups easier, and remove much of the awkwardness around chasing overdue invoices.
Common Payment Terms: Net 15, Net 30 & More
Here is a breakdown of the most widely used payment terms, what they mean, and when to use each one:
Net 15
The client has 15 calendar days from the invoice date to pay — so an invoice dated the 1st is due on the 16th. It's what we recommend as your default: short enough that you're not floating a client's project for a month, long enough that it doesn't read as distrustful on a first invoice.
Why 15 and not 30? Cash flow. Send four invoices a month on Net 30 and you can go six weeks between finishing the work and the payment landing. Net 15 keeps that gap closer to two to three weeks — which matters when rent and software subscriptions don't wait for a client's accounts-payable cycle.
Put another way: on a $2,000/month retainer invoiced monthly, Net 30 means your average cash-on-hand from that client is roughly $2,000 for half the month and $0 for the other half. Net 15 halves how long you sit at $0. The shorter the term, the more of that cash-flow risk sits with the client instead of you. The SBA makes the same point about payment terms generally: longer terms mainly help the payer hold onto their money. Faster-paying terms turn directly into cash in your account.
It's also just easier to enforce than Net 30 — a 15-day window creates a natural weekly or bi-weekly follow-up rhythm instead of a month of silence.
To put it on a contract or proposal before you ever send the invoice, a line like this covers you:
"Payment terms: Net 15. Invoices are due in full within 15 calendar days of the invoice date. A late fee of 1.5% per month applies to balances unpaid after the due date."
Other Ways "Net 15" Shows Up
Same deadline, different wrapping — you'll see this written a few ways depending on who drew up the invoice or contract:
- "Net 15 terms" — the phrase you'll usually hear spoken out loud, or see in a proposal's payment-terms section, ahead of any invoice existing yet.
- "Net-15" or "N15" — the compact form, common on templated invoices and accounting-software dropdowns where space is tight.
- "15 days net" — the same window, terms reversed. Some European and UK-influenced templates default to this order.
- "Due Net 15" or "Terms: Net 15" — spelled out on the invoice itself, next to the due date it produces.
All four mean the exact same thing: full payment, 15 calendar days from the invoice date. If a client's PO or contract uses one of these variants, match it on your invoice rather than translating it into your own house style. Accounts-payable software sometimes flags a mismatch as a discrepancy to review, which just slows you down.
Due on Receipt
Payment is expected immediately upon receiving the invoice. This is the most aggressive term and works best for:
- One-time projects with new clients
- Small deliverables under $500
- Rush or expedited work
Net 14
The client has 14 calendar days — exactly two weeks — from the invoice date to pay. It's less common than Net 15 or Net 30, but shows up in bi-weekly billing cycles and contracts where someone rounded "two weeks" to a number. If a client's contract or PO already specifies Net 14, match it exactly on the invoice rather than rounding up to Net 15. A mismatch gives accounts payable an excuse to sit on payment while they "clarify."
Net 30
The client has 30 calendar days to pay. In our experience this shows up most with larger companies and agencies, where accounts-payable runs on a fixed procurement cycle rather than paying invoices as they come in. On that same $2,000/month retainer, Net 30 means going a full extra pay cycle before the first check clears, compared to Net 15.
Net 60
Payment is due within 60 calendar days. This is primarily used in enterprise contracts and government work. Freelancers should avoid Net 60 unless the project value justifies the wait.
50% Upfront / 50% on Completion
A split payment structure where you collect half the project fee before starting and the remaining half upon delivery. This is ideal for projects over $2,000 and significantly reduces your financial risk.
Milestone Payments
Payments tied to specific project deliverables — for example, 25% at kickoff, 25% at design approval, 50% at final delivery. Best for long-running projects spanning multiple weeks or months.
Payment Terms Comparison Table
| Term | Payment Window | Best For | Risk Level | Cash Flow Impact |
|---|---|---|---|---|
| Due on Receipt | Immediate | Small projects, new clients | Very Low | Excellent |
| Net 14 | 14 days | Bi-weekly billing, matching a client's PO | Low | Very Good |
| Net 15 | 15 days | Most freelance work | Low | Very Good |
| Net 30 | 30 days | Corporate clients, agencies | Medium | Moderate |
| Net 60 | 60 days | Enterprise, government | High | Poor |
| 50/50 Split | Upfront + on delivery | Projects over $2,000 | Very Low | Very Good |
| Milestone | At each deliverable | Long-term projects | Low | Good |
How to Choose the Right Payment Terms
Choosing the right terms depends on four factors: project size, client type, your cash flow needs, and your leverage. Here is a practical decision framework:
For New Clients
Start with Due on Receipt or Net 15. You have no payment history with this client, so shorter terms protect you. You can always extend terms later once trust is established.
For Corporate Clients
In our experience, larger companies often push back on anything shorter than Net 30, since it's built into their procurement process. If a client insists on Net 30, consider:
- Requesting a deposit of 25-50% upfront
- Adding a 2% early payment discount for payments within 10 days
- Including a late payment fee of 1.5% per month
For Ongoing Retainer Work
Use Net 15 with invoices sent on the 1st and 15th of each month. This creates a predictable payment rhythm that works for both parties.
For Large Projects ($5,000+)
Use milestone payments or a 50/50 split, and don't start a large project without at least 25-50% upfront. We recommend this without exception — it caps how much unpaid work you're exposed to if the project stalls or the relationship sours partway through.
5 Tips to Get Paid Faster
1. State Terms Before Starting Work
Include your payment terms in your contract or proposal — not just on the invoice. When clients agree to terms before work begins, they are far more likely to honor them.
2. Invoice Immediately
Send your invoice within 24 hours of completing the work. The value of your work is highest in the client's mind right after delivery. Our free invoice generator lets you create and send a professional PDF invoice in just a few clicks.
3. Offer Multiple Payment Methods
The easier you make it to pay, the faster you get paid. Offer at least two options:
- Bank transfer (ACH or wire)
- Digital payments (PayPal, Stripe, or Wise)
4. Add Early Payment Incentives
A small discount can dramatically accelerate payments. Common incentives include:
| Incentive | How It Works |
|---|---|
| 2/10 Net 30 | 2% discount if paid within 10 days; full amount due in 30 |
| 1/15 Net 30 | 1% discount if paid within 15 days |
| 5% upfront discount | 5% off the total if the full amount is paid before work begins |
5. Enforce Late Payment Fees
State a clear late fee in your invoice notes — we recommend 1.5% per month on overdue balances. To be enforceable, the fee generally has to be agreed in writing before the work starts (in your contract or accepted terms), and the rate you can charge is limited by your state's laws. Even if you never enforce it, the presence of a late fee motivates timely payment.
How to Add Payment Terms to Your Invoice
Every professional invoice should display payment terms prominently. Here is what to include:
- Due date — A specific calendar date, not just "Net 30"
- Accepted methods — Bank transfer, PayPal, credit card, etc.
- Late fee clause — "A 1.5% monthly fee applies to invoices overdue by more than 15 days"
- Early payment discount (optional) — "2% discount if paid within 10 days"
Keep a copy of every invoice you send. It's core supporting documentation for the income you report on your tax return. The IRS notes that under the cash method you report "all items of income you actually or constructively received during the tax year" (IRS Publication 538). A tidy invoice archive does double duty at tax time.
Using a tool like BuildWithRiz's free invoice generator makes this process effortless. You can set payment terms, add detailed line items, and download a professional PDF — all without creating an account or storing any data.
For a complete walkthrough of creating your first invoice, see our guide on how to create a professional invoice.
Frequently Asked Questions
What does "Net 15" mean on an invoice?
Net 15 payment terms mean the client has 15 calendar days from the invoice date to pay in full — not business days, and not tied to the end of the month. If you invoice on June 1st, payment is due June 16th. It's short enough to protect your cash flow without feeling aggressive on a first invoice, which is why we recommend it as your default.
What is Net 15 payment terms, exactly?
It's a payment window, not a discount or a fee. "Net 15" just states the deadline: the full invoice amount, due 15 calendar days after the date on the invoice. Compare that to "2/10 Net 30," which is a discount structure — 2% off if paid within 10 days, full balance due at 30. Net 15 has no discount attached. It's simply a shorter deadline than the Net 30 that larger companies often default to.
What do "net 15 terms" mean, and is that different from "Net 15"?
No difference — "net 15 terms" is just how people say it out loud, or write it into a proposal's payment-terms section before an invoice exists. You'll also see it compressed to "Net-15" or reversed to "15 days net" on some templates. Whatever the wording, it's the same 15-calendar-day window from the invoice date.
Is Net 15 business days or calendar days?
Calendar days. Net 15, Net 14 and Net 30 all count every day on the calendar, weekends and holidays included. An invoice dated Friday, October 2 on Net 15 is due Saturday, October 17. When a due date lands on a weekend, most clients pay the next business day — so put the exact due date on the invoice and let the date settle it.
What does "Net 14" mean on an invoice?
Net 14 means payment is due 14 calendar days after the invoice date, exactly two weeks. On a typical $3,000 invoice, that's one day less float than Net 15 gives you — not enough to plan around. Use it when a client's contract or PO already specifies it, or when it lines up cleanly with a bi-weekly billing rhythm; otherwise, we recommend Net 15 instead.
What does "Net 15th" or "Net 15th prox" mean?
Something different from Net 15. "Net 15th" (sometimes "Net 15th prox", short for proximo, "next month") means the balance is due on the 15th of the month after the invoice date, regardless of when in the month you invoiced. Invoice on October 3 and payment is due November 15 — six weeks out. Invoice on October 28 and it's still due November 15 — under three weeks. If a client offers "Net 15th," read it as anywhere from about two to six weeks with a fixed due date, depending on when in the month you invoice — not as a rolling 15 days.
What does "Net 30" mean on an invoice?
Net 30 means the client has 30 calendar days from the invoice date to submit payment. It's a term you'll run into often in business-to-business dealings, especially with larger companies. For freelancers, Net 30 can strain cash flow — consider using Net 15 instead.
Is Net 15 or Net 30 better for freelancers?
Net 15 is generally better for freelancers. It cuts the payment window in half, improving cash flow without being overly aggressive. Reserve Net 30 for established clients or corporate contracts that require it.
Can I charge a late fee on overdue invoices?
In most cases you can, but only if the fee is agreed upon in advance — ideally in your signed contract and restated on every invoice — rather than added after a payment is already late. There is no single national rule for B2B invoices: individual state laws set the maximum allowable rate. Washington, for example, caps interest at 12% per year or 4% above the Federal Reserve's 26-week treasury bill rate, whichever is higher. It then exempts loans made primarily for business or commercial purposes from that cap (see the DFI's exceptions page, listed under Sources) — and rules like this vary significantly from state to state. We use 1.5% per month in the contract line above as a reasonable default, but check the rules where your client is based before setting yours.
Should I ask for a deposit before starting work?
Absolutely. For any project over $1,000, we recommend requesting a 25-50% deposit. It protects you financially and signals that the client is committed to the project.
What payment terms should I use for my first client?
Start with Due on Receipt or Net 15. As you build trust and establish a working relationship, you can extend terms to Net 30 if the client requests it.
Set Your Payment Terms and Get Paid
Clear invoice payment terms are the foundation of a healthy freelance business. Whether you land on Due on Receipt, Net 14, Net 15, or Net 30, choose terms that match your project size and client type, state them upfront, and always include them on your invoices.
Ready to create a professional invoice with clear payment terms? Our free invoice generator handles everything — multiple currencies, detailed line items, and instant PDF downloads. No signup, no data stored, completely private.
This article is general information for freelancers and small-business owners, not tax, legal, or accounting advice. Late-fee limits, payment-term rules, and recordkeeping requirements vary by state and country — consult a qualified professional or your local authority before acting on specifics.
Sources
- IRS Publication 538, Accounting Periods and Methods — cash-method income recognition ("all items of income you actually or constructively received during the tax year").
- Washington State Department of Financial Institutions — Usury Law — interest-rate cap example (12%/year or 4% above the 26-week T-bill rate).
- Washington State DFI — Exceptions to the Usury Law (dfi.wa.gov/financial-education/information/exceptions-usury-law, not hyperlinked) — business/commercial-purpose loan exemption.
- U.S. Small Business Administration, How Net 30 Accounts Help Conserve Business Cash Flow — longer payment terms favor the payer; faster terms convert receivables to cash sooner.