If a client refuses to pay you, your options escalate in a predictable order: document the debt, send a formal demand letter, try mediation or a collection agency, and if none of that works, sue in small claims or civil court and then enforce the judgment. What makes sense depends on how much you’re owed, how old the invoice is, and whether your contract gave you tools like interest, late fees, or attorney-fee recovery. The one deadline you can’t let slide is your state’s statute of limitations, which cuts off your right to sue regardless of how strong your evidence is.
Start With Your Paper Trail
Before you send anything or call anyone, pull together every document that proves you performed the work and the client agreed to pay. Gaps here hurt you at every later stage.
You want the signed contract or service agreement showing scope and rate, every invoice you sent with its payment terms (Net 30, Net 60, whatever you agreed to), and proof of delivery: final deliverables, project logs, time stamps, screenshots, or signed acceptance forms. Then put your communication history in chronological order. Emails, texts, voicemails, and chat logs showing your follow-ups all matter, and messages where the client acknowledged the debt, disputed a specific line item, or asked for more time are especially valuable. The file should tell a clean story: you performed, you billed, they didn’t pay, you tried to work it out.
Know Your Filing Deadline
Every state sets a deadline for filing a breach-of-contract lawsuit, and once it passes you lose the right to sue. For written contracts the window runs from three years in states like Mississippi and North Carolina to ten or more years in others. Oral agreements usually have shorter deadlines. The clock typically starts on the date payment was due, not the day you gave up trying to collect.
That’s why sitting on an unpaid invoice for a year or two while hoping the client comes around is risky. If you’re approaching the deadline without a resolution, file suit to preserve the claim. You can still settle, mediate, or negotiate after the case is on file. You can’t file after the deadline passes.
Send a Formal Demand Letter
A demand letter is your first formal escalation and often the most cost-effective one. Plenty of clients who have ignored invoices pay once they see a letter that explicitly threatens legal action. Send it via USPS Certified Mail with Return Receipt Requested so you have signed confirmation of delivery. That receipt kills the “I never got it” defense if you end up in court.
Include the total owed (principal plus any contractually agreed interest or late fees), a short description of the services performed, and a firm payment deadline. Most demand letters give 10 to 30 days. Shorter deadlines create urgency, but anything under 10 days can look unreasonable to a judge. Keep the tone professional. Specific, credible threats work better than vague ones: “I will file a claim in small claims court on [date]” lands harder than general warnings.
Charging Interest and Late Fees
You can only add interest or late fees if the client agreed to them before you started work. The rate, the fee structure, and any grace period all need to be spelled out in the signed agreement. Without that language, you’re generally limited to the base invoice amount.
State usury laws cap how much interest you can charge, and the limits vary. As a practical matter, keeping annual interest at or below 10 percent avoids trouble in nearly every jurisdiction. Some states also require a grace period before late fees can kick in. If late-payment terms weren’t in your contract this time, put them in every future one.
Try Mediation Before Court
Mediation puts you and the client in front of a neutral third party who helps you negotiate a resolution. It’s faster and cheaper than court, and it can salvage business relationships that a lawsuit would end. You can find mediators through local bar associations or private dispute resolution firms, and sessions can run in person or over video.
The mediator doesn’t rule on who’s right. They guide the conversation, sometimes shuttling between separate rooms to discuss numbers privately with each side. That approach works well when direct negotiation has stalled. If you reach an agreement, it gets written up and signed, creating an enforceable contract. If mediation fails, you’ve spent a few hundred dollars and a day, and you still have every legal option you started with.
Hand It to a Collection Agency
If you’d rather not chase the debt yourself but aren’t ready to sue, a collection agency can take over. Most agencies work on contingency, meaning they take a percentage of what they recover and you pay nothing up front if they collect nothing. Commission rates usually run 20 to 35 percent for debts under $5,000 and climb to 40 percent or higher for debts older than six months. The older and smaller the debt, the higher the percentage.
Once a third-party collector is involved, federal law applies to them. The Fair Debt Collection Practices Act restricts when and how collectors can contact your client: no calls before 8 a.m. or after 9 p.m., no harassment, no publicly posting about the debt on social media.1Consumer Financial Protection Bureau. What Laws Limit What Debt Collectors Can Say or Do A nuance most business owners miss: the FDCPA generally does not apply to you when you’re collecting your own debts directly, because the statute defines “debt collector” as someone collecting debts owed to another person, which excludes original creditors.2FTC. Think Your Company’s Not Covered by the FDCPA? You May Want to Think Again The exception: if you use a fake company name to make it look like a third party is collecting, you lose that exemption.3eCFR. Part 1006 Debt Collection Practices (Regulation F)
File a Mechanics Lien If You Improved Property
Contractors, subcontractors, and suppliers who improved real property have a tool most other creditors don’t. A mechanics lien places a legal claim directly on the client’s property, which means they can’t sell or refinance it without clearing your unpaid bill. The property itself becomes your collateral.
The process is entirely state-specific, but the general sequence is: send a preliminary notice (required in many states before you can file), file the lien paperwork with the county clerk where the property sits, and enforce the lien through a foreclosure action if the client still doesn’t pay. Filing deadlines typically range from two months to one year after your last day of work on the project, and missing the deadline wipes out your lien rights. If you did construction, renovation, or improvement work, this should be the first recovery tool you consider. It is not available for other kinds of unpaid invoices.
Sue in Small Claims Court
Small claims court exists for exactly this situation: a straightforward debt dispute where you don’t need a lawyer. Monetary limits vary by state, from around $2,500 to $25,000, with most capping claims at $5,000 or $10,000. Filing fees are modest and hearings are scheduled faster than in regular civil court.
You start at the courthouse clerk’s office or an online portal, submitting a statement of claim that explains what the client owes and why. After filing, the client has to be formally served with the court papers, and you can’t hand-deliver them yourself. A professional process server or the local sheriff does this, and fees vary by jurisdiction. The server files a proof of service with the court. Once service is complete, the court schedules a hearing, typically 40 to 90 days out.
Small claims judges have wide discretion over evidence, so the formality bar is lower than in regular court. Bring your whole evidence file organized chronologically, with copies for the judge and the other side. If someone else witnessed the work or the client’s agreement to pay, bring them or get them served with a witness subpoena through the clerk’s office well before trial. Judges generally won’t postpone a hearing for a missing witness who wasn’t formally subpoenaed.
File a Civil Lawsuit for Larger Debts
When the amount owed exceeds your state’s small claims limit, you have to file in a higher court. That means drafting a complaint laying out the facts and legal basis for your claim and issuing a summons directing the client to respond. Filing fees jump into the several-hundred-dollar range depending on the court and the amount in dispute.
After the client is served, federal rules give a defendant 21 days to file a written response.4Legal Information Institute. Federal Rules of Civil Procedure Rule 12 – Defenses and Objections: When and How Presented State courts set their own deadlines, usually in a similar range. If the client ignores the lawsuit entirely, you can ask the court for a default judgment, which hands you a win without trial. If they respond, the case moves into discovery, where both sides exchange documents and answer written questions under oath. This is where a lawyer starts to matter, because discovery has procedural rules that trip up self-represented litigants.
Who Pays the Attorney Fees
Under the American Rule that applies in most U.S. courts, each side pays its own attorney fees regardless of who wins. That default makes suing for a $15,000 debt a tough financial call if legal bills will eat half the recovery. The main exceptions are contractual fee-shifting clauses and specific statutes that authorize fee awards. If your contract says the losing party pays the winner’s attorney fees, courts typically enforce it. Some state consumer protection statutes also allow fee recovery in certain commercial disputes.
The practical takeaway is to include an attorney-fee clause in every contract you sign. Without one, you’ll almost certainly absorb your own legal costs even when you win. For debts in the $10,000 to $25,000 range, this math often pushes people toward collection agencies or aggressive settlement talks instead.
Collect on the Judgment
Winning a court judgment is not the same as getting paid. The court doesn’t collect the money for you. It hands you a piece of paper saying the client owes you a specific amount, and if they don’t voluntarily pay you have to go back to court for enforcement tools.
The primary enforcement mechanism is a writ of execution, which directs a sheriff or marshal to seize the debtor’s assets to satisfy the judgment.5U.S. Marshals Service. Writ of Execution The two most common collection methods are wage garnishment and bank levies. Federal law caps wage garnishment for ordinary debts at 25 percent of the debtor’s disposable earnings or the amount by which weekly earnings exceed 30 times the federal minimum wage, whichever is less.6Office of the Law Revision Counsel. 15 U.S. Code 1673 – Restriction on Garnishment A bank levy directs the debtor’s bank to freeze and turn over funds up to the judgment amount.
You can also record an abstract of judgment with the county recorder where the debtor owns real estate, which creates a lien on their property. That lien has to be satisfied before the property can be sold or refinanced, so it applies steady long-term pressure. For business debtors, you may also be able to seize business assets or intercept payments owed to the debtor by third parties. Enforcement is often the hardest part of the process, especially if the debtor has no obvious assets. Some judgments are effectively uncollectible, and that’s worth considering before you spend thousands on litigation.
Write Off What You Can’t Collect
If you’ve exhausted your options and the debt is genuinely uncollectible, you may be able to deduct it as a business bad debt. The IRS allows a deduction under 26 U.S.C. ยง 166 when a business debt becomes wholly or partially worthless, but the rules depend on your accounting method.7Office of the Law Revision Counsel. 26 USC 166 – Bad Debts
If you use accrual-basis accounting, you likely already reported the unpaid invoice as income when you billed it. You can deduct the uncollectible amount in the year it becomes worthless, which effectively reverses the income you never received.8Internal Revenue Service. Tax Guide for Small Business If you use cash-basis accounting, which most freelancers and sole proprietors do, you generally cannot deduct unpaid fees because you never included that money in your income in the first place. You can’t deduct income you never reported.9Internal Revenue Service. Topic No. 453 – Bad Debt Deduction
To claim the deduction, the debt has to be connected to your trade or business, and you need to show there’s no reasonable chance of collecting. Partial write-offs are allowed under the specific charge-off method, but only for the amount you formally write off on your books during the tax year. Keep your demand letters, court filings, and collection agency reports, because the IRS may ask you to prove the debt is actually worthless rather than just inconvenient to collect.
Prevent the Next One
Every unpaid invoice teaches the same lesson: the time to protect yourself is before you start work. Include clear payment terms, a late-fee provision, and an attorney-fee clause in every contract. Specify that disputes will be resolved in your local jurisdiction where possible, and require deposits or milestone payments on larger projects so you’re never too far out before collecting something. For high-value work with an LLC or corporation client, consider requiring a personal guarantee from the business owner. A corporate client that folds leaves you with an uncollectible judgment against an empty shell. A personal guarantee gives you a second path to recovery.