What to Do When a Client Won't Pay: A US Freelancer's Guide
The Freelancers Union has been collecting unpaid invoices from its members for years, and the numbers it reports are grim reading: around 71% of freelancers say they have had trouble collecting payment at some point, and the ones who get stiffed lose roughly $6,000 a year, about 13% of their income. In the twelve months to May 2025, over a thousand freelancers from 44 states added invoices to the union's World's Longest Invoice campaign, reporting more than $7.4 million in work nobody paid for.
Most of those invoices were collectible at some point. What usually happens is that the freelancer sends two apologetic emails, hears nothing, feels awkward, and gives up. The law in several states has changed a lot in your favor since 2024, and the chasing process that actually works is more boring and more systematic than most people expect.
Rule out the boring explanations first
Before you decide a client is refusing to pay, check whether they ever received a bill they could act on. A surprising share of "won't pay" turns out to be an invoice sitting in a spam folder, an invoice sent to a project manager who has no access to accounts payable, or a missing purchase order number that quietly bounced the whole thing out of the client's system. Larger companies run payment runs on fixed days, so an invoice that arrives on the 3rd may genuinely not be scheduled until the 30th, and nobody thinks to tell you.
A short, neutral email answers all of this in one go. Ask whether the invoice was received, who in accounts payable is handling it, and what date it is scheduled for. You are not accusing anyone yet. You are finding out which problem you have, because a lost invoice and a client with no money need completely different responses.
Get your records straight before you escalate
Everything that follows in this article rests on being able to show what you did, when you did it, what was agreed, and what you billed. If your evidence is a folder of emails and your memory, you will lose arguments you should win, and you will hesitate to push because somewhere underneath you are not quite sure of your own numbers.
What you want in front of you: the written agreement or the email thread where the client approved the scope and the rate, a dated record of the hours or deliverables, the invoice itself with its number and due date, and the delivery evidence (a sent-mail timestamp is fine). A time record built as you go is worth far more here than one reconstructed after the dispute started, and it reads that way to anyone reviewing it. Clients who want to negotiate a bill down start by questioning the hours, and an itemized week with dates and descriptions ends that conversation quickly.
If you invoiced from a timesheet, print or export the underlying detail and keep it with the invoice. It rarely comes up, and when it does it settles things in one attachment.
The five-step chase that collects most invoices
Work the ladder in order. Each rung is slightly firmer than the last, and most invoices come loose somewhere in the middle. The point of doing it in sequence is that by the time you reach the top, you have a documented paper trail that a court or a state agency can read at a glance.
1. Send a plain reminder the day after it's due
Not a week later. The day after. A one-paragraph email with the invoice attached again, the invoice number, the amount, the due date that has passed, and a direct question: when will this be paid? Keep the tone flat and administrative. Half of all overdue invoices are paid after a single reminder like this, and treating it as routine means you send it without the emotional buildup that makes people delay.
2. Get a human on the phone at day seven
Email is easy to leave unanswered, and a client avoiding you will keep doing it for as long as you keep emailing. Call your contact, and ask two questions: is there any problem with the work or the invoice, and what date will the payment be made. Then email a summary of what they told you. That summary is now a record of a promise, which matters later.
3. Stop work at day fourteen, and say so
If the relationship is ongoing, this is your real leverage, and it evaporates the longer you continue delivering for free. Tell the client that work is paused pending payment of invoice whatever, and that you will pick it straight back up once it clears. Deliver the message without drama. You are not punishing them, you are declining to extend more credit to a client who has not settled the last round.
4. Send a formal demand letter at day thirty
A demand letter is a short, dated document that sets out the contract, the work delivered, the invoice, the amount outstanding, any late fees your contract allows, a deadline (ten business days is common), and what you will do if the deadline passes. Send it by email and by certified mail with return receipt, which gives you proof of delivery. Attach the invoice, the agreement and the record of work. Many freelancers find the check arrives in the week after this letter, because it is the first thing in the sequence that reads like the start of a legal process rather than a request.
5. File, or hand it off
Past that point you have three realistic options: small claims court (see below), a collections agency that takes a cut of anything it recovers, or a complaint under your state's freelance protection law if you are covered by one. An attorney's letter sits in between, and for a four-figure debt a single letter on a firm's letterhead is often cheaper than you would guess.
Late fees and interest: what you can actually charge
Every state lets a business charge interest on an overdue commercial debt. The catch is that the client has to have agreed to it before the work started, which means the late fee clause has to live in your contract or your written terms, not on the invoice you send after the payment is already late. Adding a fee retroactively to a bill nobody agreed to is a good way to hand your client an argument.
The common rate among US freelancers is 1.5% per month, which is 18% a year. On an overdue invoice of £3,200, that is about £48 a month. State usury caps vary widely, and while most courts in states like California and New York have treated a late charge on a commercial account as something other than a loan, 1% to 1.5% a month keeps you inside the range that is rarely challenged anywhere. If you write a higher number into your terms, check your own state's limit, because an interest charge above the cap can be voided and in a few states it causes bigger problems than that.
Whether to actually charge the fee is a judgment call. With a client you want to keep, the clause is often more useful as a reason to pay on time than as revenue, and waiving it explicitly ("I'm not applying the late fee this time") makes the point without costing you the relationship. With a client who has stopped answering, apply it and keep applying it. Our guide to invoicing for hourly work covers where the terms belong on the document itself.
Your state may already be on your side
This is the part most freelancers miss, and it has changed fast. Three jurisdictions now give independent contractors statutory payment rights that are stronger than anything in an ordinary contract dispute, and the penalties are aimed squarely at clients who simply don't pay.
New York. The Freelance Isn't Free Act went statewide on August 28, 2024, having started life as a New York City ordinance. A written contract is required once the work is worth $800 or more, counting everything that hiring party has engaged you for in the previous 120 days. Payment is due on the contract date or, if none is stated, within 30 days of completing the work. Failure to pay exposes the client to double the invoice amount, and failing to provide the written contract carries $250 on its own. Complaints go to the New York State Attorney General.
Illinois. The Freelance Worker Protection Act took effect on July 1, 2024 and covers work worth $500 or more in a 120-day period, for contractors working in Illinois or for an Illinois-based client. Same 30-day default. A client who pays late owes double the underpayment plus your attorney's fees and costs, and the Illinois Attorney General can seek civil penalties up to $5,000 per violation, or $10,000 for a repeat within five years. There is also a ban on the common trick of renegotiating the price downward once the work is delivered, in exchange for faster payment.
California. SB 988, also called the Freelance Worker Protection Act, applies to contracts from January 1, 2025 for professional services worth $250 or more. Written contract required, client must keep it for four years, payment on the contract date or within 30 days of completion. A freelancer can bring a civil action, and damages for other violations are set at the value of the contract or the work, whichever is greater.
Even if you are not in one of these states, the existence of the laws is useful: they establish 30 days as the default a legislature considered reasonable, which is a fair thing to cite in your own terms. And if your client is based in New York, Illinois or California, look at the coverage rules carefully, because several of them attach to where the hiring party sits rather than where you do. This is general information, not legal advice, and the details of who is covered are worth checking with an attorney before you rely on them.
Small claims court, and when it's worth it
Small claims court exists for exactly this: a straightforward debt, no lawyer required, filing fees usually somewhere between $30 and $100. The ceiling depends on where you file. California allows individuals up to $12,500 (businesses and other entities are capped at $6,250), Texas up to $20,000, and New York varies by court, with $10,000 in New York City, $5,000 in upstate city courts and $3,000 in town and village courts. Across the country the limits run from $2,500 in Kentucky to $25,000 in Tennessee and Delaware. You normally file where the client is located or where the contract was performed.
Two honest caveats. Winning a judgment is not the same as being paid, and collecting on one against a company with no assets can be its own project. And if the debt is above the ceiling, you can waive the excess to stay in small claims, which is often worth doing: a fast $12,500 usually beats a slow $16,000 with an attorney's bill attached.
What wins these cases is documentation. A judge looking at a signed scope, a dated record of the work, an invoice, and a paper trail of ignored reminders does not need to spend long on it.
The tax sting nobody warns you about
Freelancers often assume an unpaid invoice can at least be written off as a bad debt. If you file on the cash basis, which nearly every solo freelancer does, you cannot. You only report income when you receive it, so an invoice that was never paid was never in your income, and the IRS takes the view that you therefore had no loss to deduct. The money is simply gone, with no tax consolation at the end of the year.
Accrual-basis businesses are in a different position, because they already booked the invoice as income and can deduct it when it becomes worthless. For everyone else, this is the arithmetic that should push you up the chase ladder faster. Recovering an unpaid £3,200 invoice is worth more to you than winning £3,200 of new work, because the new work costs you the hours to deliver it.
Making the next one less likely
Nonpayment concentrates among a few recognizable situations, and you can price or structure your way out of most of them.
- Take a deposit. A third up front for new clients filters out the ones who were never going to pay, and it does it before you have spent the hours.
- Bill in shorter cycles. Invoicing every two weeks on a long project caps how much you can lose to any one client going quiet. A quarterly invoice puts three months of your income on a single act of trust.
- Get the scope and the rate in writing, even if it is only a confirming email that the client replies to. In three states that written record is now a statutory right rather than good practice.
- Watch the first payment. A client who pays invoice one late, without explanation, is telling you something about invoices two through ten.
- Invoice the day the work is done. Your own delay resets the clock and makes it awkward to complain about theirs.
Consistent invoice numbering, clear due dates and terms that say what happens when a payment is late all make you look like a business with a process, and clients treat businesses with a process differently than they treat a freelancer sending an occasional PDF. If you want somewhere to start, our free invoice generator produces a proper numbered invoice with payment terms, no account needed.
The bottom line
The freelancers who get paid are rarely the toughest negotiators. They are the ones who send the reminder on day one instead of day twelve, who can produce a dated record of the work without hunting for it, and who stop delivering when the last invoice is a month overdue. None of that requires a confrontation. It requires having decided in advance what you do on day one, day seven and day thirty, so that when it happens you are following a process instead of working out how brave you feel.
Frequently asked questions
What can I do if a client refuses to pay an invoice?
Work through an escalating sequence: a plain reminder the day after the due date, a phone call at a week, pausing work at two weeks, a formal demand letter by certified mail at 30 days, then small claims court, a collections agency, or a complaint under your state's freelance protection law. Keep a written record at every stage.
Can a freelancer charge a late fee on an overdue invoice?
Yes, as long as the client agreed to it in advance, which means the clause has to be in your contract or written terms before the work starts. Around 1% to 1.5% per month is the usual range and sits inside most state usury caps. You cannot add a fee retroactively to an invoice nobody agreed to.
How long does a client have to pay a freelancer in the US?
It depends on your contract. Where a state freelance protection law applies and the contract is silent, New York, Illinois and California all set the default at 30 days after the work is completed, with statutory damages for clients who miss it.
Is it worth taking an unpaid invoice to small claims court?
Often, for debts in the low thousands. Filing fees are usually $30 to $100, you do not need a lawyer, and limits run from $2,500 in Kentucky to $25,000 in Tennessee and Delaware. The practical question is whether the client has assets, because a judgment still has to be collected.
Can I write off an unpaid invoice on my taxes?
Not if you file on the cash basis, which most solo freelancers do. You never reported the income, so the IRS does not treat the unpaid invoice as a deductible loss. Accrual-basis businesses that already booked the income can claim a bad debt deduction when it becomes worthless.
