What to do when a client won't pay: a 6-step escalation plan

The pay-on-time guide is about prevention: deposits, terms and reminders. This post is for when those didn't work and an invoice is weeks overdue. It's part of our getting paid series. Keep everything in writing from the first reminder on: if this ends in court, your emails are the evidence.

This post is general information, not legal or tax advice. Laws change and depend on where you and your client are; check the sources below or ask a lawyer licensed in your state before relying on a rule.

The escalation timeline, day by day

1. Rule out the boring reasons first

Before you escalate, check the invoice itself. Was it sent to the person who pays (often accounts payable, not your contact)? Does it carry the PO number, the company's legal name and your W-9 if they asked for one? Did the client's spam filter eat it? A client who can say "we never got a valid invoice" will win the first round, so fix the paperwork and resend before you get firm.

2. Remind, then remind firmly

The first reminder assumes good faith; the one at day 7 states consequences. Keep both short, include the amount, the original due date and the pay link every time, and quote the late fee only if the client agreed to it before the work began. If you're unsure what you can charge, check the late fee limits by state and calculate the amount with the invoice late fee calculator.

3. Call, and write down what you hear

A call at day 14 gets an answer an email won't: "the invoice is with finance", "we're waiting on our client", "we're unhappy with the work". Each needs a different reply. A payment-processing delay needs a date. A complaint about the work needs a specific fix or a discussion, not silence. A client who's short on cash may agree to a written payment plan. Confirm the outcome by email the same day.

4. Pause work, if the contract lets you

Stopping work is your strongest lever while the project is still live, but only do it if your contract says you can pause while an invoice is overdue. Without that clause, a pause can look like you breached first. The freelance contract template includes a pause clause; add it to your next agreement. Don't hold back files or access the client already paid for.

5. Send a final demand letter

A demand letter is the last step before a claim and is often the one that works, because it shows you've prepared. Send it by email and by a trackable method such as certified mail, and keep a copy.

[Your name / business name]
[Address] · [Email] · [Phone]

[Date]

[Client legal name]
Attn: [Name, title]
[Address]

Re: Final demand for payment, invoices [2026-014, 2026-019]

Dear [Name],

Under our agreement dated [date], I provided [services] which you accepted on [date]. The following invoices remain unpaid:

- Invoice [2026-014], dated [date], due [date]: $[amount]
- Invoice [2026-019], dated [date], due [date]: $[amount]
- Late fee under section [4] of our agreement ([1.5]% per month): $[amount]
Total due: $[total]

I sent reminders on [dates] and we spoke on [date], when you said [summary].

Please pay the total by [date, 10 to 14 days from today] by [pay link / bank details]. If I don't receive payment by then, I will [file a claim in small claims court in (county) / file a complaint under (state law) / refer the debt to a collections agency] without further notice.

If you believe any amount is incorrect, reply in writing before that date with the reason.

Sincerely,
[Name]

6. Small claims court: limits in 9 large states

Small claims courts handle money disputes up to a limit set by each state, with modest filing fees and simple forms. Limits apply to the amount you ask for; check whether interest and costs count toward it in your state. If your claim is over the limit, you can usually waive the excess to stay in small claims, or file in a higher court.

Where to file usually depends on where the client is or where the work was done, and you'll need the client's legal name and address. Winning gives you a judgment; collecting it can take more steps, such as a bank levy, which the court's self-help pages explain.

Freelance laws that add remedies

In New York State, the Freelance Isn't Free Act covers jobs of $800 or more and gives remedies including double damages and attorney's fees; complaints go through the state. New York City has its own law, enforced by the Department of Consumer and Worker Protection. California's SB 988 (jobs of $250 or more since January 1, 2025) lets a freelancer bring a civil action, and Illinois' Freelance Worker Protection Act (contracts of $500 or more after July 1, 2024) has its own complaint process. If you're covered, cite the law in your demand letter.

Collections agency or lawyer?

What not to do

• Don't threaten things you won't do or can't do, such as calling the police over a business debt.
• Don't post about the client publicly. It rarely gets you paid and can expose you to a defamation claim.
• Don't delete or break work the client already paid for, or lock them out of their own accounts.
• Don't keep working on credit while an invoice is overdue. Each new week of work is more money at risk.

In SoloWOS

SoloWOS Invoicing handles steps 1 and 2 for you: optional reminders go out 3 days before the due date and 3 and 7 days after it, only while the invoice is unpaid, each with the pay link and your payment details. The invoice shows when the client viewed it, which settles "we never got it". For the rest of the plan, Automations can create a task or notify you a set number of days after an invoice is sent if it still isn't paid, so the call on day 14 doesn't slip.