Key Points in This Guide
- 1Invoice payment windows: net-15, net-30, and net-60 compared
- 2Upfront deposits: how much to require and when
- 3Milestone-based payment structures for longer projects
- 4Late payment fees: how to include them and enforce them
- 5Payment contingent on approval: why it is dangerous
- 6Currency and payment method terms for international clients
Late payment is one of the biggest financial problems facing freelancers worldwide. In many cases, the problem starts in the contract — with vague payment terms, long invoice windows, or payment contingent on subjective client approval. Getting payment terms right in your contract is the most reliable way to ensure you get paid on time, every time.
Payment Structure Comparison
There are five main payment structures for freelance projects. Each has different risk profiles for the freelancer. The right structure depends on project length, client relationship, and your cash flow needs.
| Structure | How It Works | Best For | Freelancer Risk |
|---|---|---|---|
| 100% upfront | Full payment before work begins | Small projects < $500; new clients | Very Low |
| 50/50 split | 50% deposit + 50% on delivery | Most projects $500–$5,000 | Low |
| Milestone-based | Payment at each project milestone | Multi-phase projects; development | Low–Medium |
| Net-15/Net-30 | Invoice on delivery, paid in 15–30 days | Ongoing corporate clients | Medium |
| Net-60/Net-90 | Invoice on delivery, paid in 60–90 days | Large enterprise clients only | High |
| Payment on approval | Payment triggered by client approval | Almost never appropriate | Very High |
| Monthly retainer | Fixed monthly fee for ongoing work | Long-term client relationships | Low |
Late Payment Clauses: How to Include Them and Make Them Stick
A late payment clause is the single most effective tool for getting paid on time. Clients who know there is a financial penalty for late payment consistently pay faster than those who face no consequences. The standard rate is 1.5% per month (18% annually) on overdue amounts — this is high enough to motivate payment but standard enough that no professional client will reject it.
The late fee must be in the written contract to be enforceable. A verbal mention is not enough. Include the rate, the grace period (typically 5–7 days after the due date before the clock starts), and how the fee compounds (typically simple interest, not compound). State law governs usury limits — check that your rate does not exceed your state's maximum.
For international clients, include currency in the late fee clause (always invoice in your currency for international clients) and time zone for the due date calculation.
💬 Template late payment clause
LATE PAYMENT. Invoices not paid within the payment period specified above shall accrue interest at the rate of 1.5% per month (18% per annum) on the unpaid balance, beginning five (5) business days after the due date. Client shall also reimburse Contractor for all reasonable costs of collection, including attorney's fees, incurred in connection with overdue invoices.
Deposits: How Much to Require and Why
A non-refundable upfront deposit serves two functions: it filters out non-serious clients (clients unwilling to pay a deposit are frequently the ones who disappear mid-project), and it ensures you are partially compensated even if the project is cancelled before completion.
Industry standard for most freelance work is 25–50% upfront. For new clients, first-time engagements, and any project requiring significant upfront investment of your time or third-party costs, 50% is appropriate and expected. For established long-term clients, a 25% deposit or no deposit on ongoing retainer work may be fine.
The deposit payment should be explicitly non-refundable in the contract and clearly distinct from the kill fee: "The deposit paid hereunder is non-refundable regardless of cancellation and shall not be credited against the cancellation fee under Section [X]." This prevents clients from treating the deposit as a full kill fee.
💬 Script: Responding when a client pushes back on your deposit requirement
"The deposit is how I hold the project slot in my schedule and begin allocating time to your work. Without it I can't guarantee availability or commit resources to the project. It's a standard part of how I work with all clients — it's not a reflection of any concern about you specifically. For your protection, if for any reason I fail to deliver, the deposit is fully applicable to the project work. Does net-5 on the deposit work for your accounts payable, or would you prefer a different deposit payment date?"
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