Direct contact is your first step, but the method depends on what you agreed to upfront

If a customer owes you money, your options depend on three things: what you agreed to when you made the sale, whether you have that agreement in writing, and how much time has passed. The fastest path is usually a straightforward conversation—a phone call, email, or text asking when you can expect payment. Many unpaid invoices are straightforward forgotten or delayed, not deliberate refusals. If the customer avoids you or refuses to pay after you've asked directly, you move into formal collection territory, which involves documentation, written demands, and potentially small claims court or a collection agency.

Before you take any formal step, gather what you have: the original invoice or receipt, any emails or messages about the sale, proof of delivery or service completion, and a record of every time you've asked for payment. This documentation is what makes the difference between a conversation and a legal claim.

Key Takeaways

  • Start with a direct request by phone, email, or text, and keep a record of when you asked and what the customer said.
  • Send a written demand letter (sometimes called a demand for payment) that states the amount owed, the date it was due, and a important date for payment—usually 10 to 30 days out.
  • Small claims court is available for debts under a certain amount (usually $5,000 to $25,000, depending on your state) and does not require a lawyer.
  • Collection agencies buy your debt for a percentage of what they recover, or work on commission; they contact the customer on your behalf but you lose a cut of the money.
  • Payment plans and partial settlements are often faster than court and cost less than collection agencies, so negotiate before you escalate.

How to ask for payment in writing without going to court

A written demand letter is the middle ground between a casual conversation and a lawsuit. It puts the customer on notice that you are serious, creates a paper trail, and sometimes prompts payment without further action. The letter should include the amount owed, what it was for, when it was due, and a specific important date for payment—typically 10 to 30 days from the date you send it. Keep the tone professional and factual, not angry or threatening.

Send the letter by email, certified mail, or hand delivery so you have proof it arrived. If you use certified mail, keep the receipt. If you use email, send it to the address the customer gave you and ask for a read receipt if your email provider offers one. State in the letter that if payment is not received by the important date, you will pursue other collection methods. Do not make threats you cannot carry out or threats that sound illegal (like threats of violence or property damage).

Many customers pay after a demand letter arrives, especially if they were straightforward procrastinating. If the important date passes with no payment and no response, you have documentation that you made a formal request—this matters if you end up in court later.

Small claims court for debts under your state's limit

Small claims court is designed for disputes involving money, and you do not need a lawyer to file. The amount you can sue for varies by state: some states allow claims up to $5,000, others up to $25,000. Check your state's court website or call your local courthouse to find the limit in your area. The filing fee is usually $50 to $300, depending on the amount you are claiming.

To file, you go to your local small claims court (usually the courthouse in the county where the customer lives or where the transaction happened), fill out a form stating what you are owed and why, and pay the filing fee. The court then notifies the customer and sets a hearing date, usually 4 to 8 weeks out. You bring your documentation—the invoice, emails, proof of delivery, your demand letter, and any other evidence—and present your case to a judge. The customer can show up and dispute the claim, or not show up at all (in which case you often win by default).

If you win, the judge issues a judgment in your favor. This does not automatically put money in your account; it means the customer is legally ordered to pay. If they do not pay, you can pursue collection methods like wage garnishment or bank levies, though these vary by state and require additional paperwork filed with the court.

Collection agencies: what they do and what they cost

A collection agency is a company that buys your debt or works on commission to recover it. If they buy the debt outright, you receive a lump sum (usually 30 to 50 percent of what you are owed) and the agency keeps whatever they collect. If they work on commission, you pay them a percentage of what they recover—typically 25 to 50 percent—and you keep the rest.

The agency contacts the customer repeatedly by phone, email, and mail, and reports the debt to credit bureaus if the customer has a credit file. This can pressure a customer to pay because unpaid debts damage credit scores. However, collection agencies are bound by the Fair Debt Collection Practices Act (FDCPA), which prohibits harassment, threats, and contact at unreasonable hours. If an agency violates these rules, the customer can sue them.

Collection agencies work best for larger debts (usually $500 or more) where the cost of pursuing the debt yourself is high. For small debts, the percentage the agency takes often leaves you with very little. Also, using an agency can damage your relationship with the customer permanently, so consider this route only if you do not expect to do business with them again.

Negotiating a payment plan or partial settlement

If the customer says they cannot pay the full amount right now, a payment plan or settlement can be faster than court and less costly than a collection agency. A payment plan breaks the debt into smaller installments over time—for example, $100 per month for 10 months instead of $1,000 now. A settlement is when you agree to accept less than the full amount in exchange for when ready payment—for example, accepting $700 to close out a $1,000 debt.

Get any agreement in writing, even if it is just an email the customer replies to confirming the terms. State the total amount owed, the payment schedule or settlement amount, and what happens if they miss a payment. If they miss a payment under the plan, you can pursue collection again, but you now have a written agreement showing they acknowledged the debt and agreed to pay.

Settlements are attractive to customers because they reduce what they owe, and attractive to you because you get paid sooner and avoid court costs. The trade-off is that you receive less money. Decide in advance what percentage of the debt you are willing to accept—for example, 70 or 80 percent—so you can negotiate quickly if the customer asks.

What to do if the customer disputes the debt

If the customer says they do not owe the money, or that they already paid, or that the amount is wrong, you need to prove your case. This is why documentation from the start matters. Pull together the original invoice or receipt, any signed agreement or email confirming the sale, proof that you delivered the goods or completed the service, and proof of the amount. If the customer claims they paid, ask them for proof—a receipt, a bank statement showing the transfer, a cancelled check. If they cannot produce it, that is a strong signal they did not actually pay.

If you genuinely made an error—you charged them twice, or the invoice amount was wrong—correct it and apologize. Customers are often willing to pay if they believe the mistake was honest. If the customer is disputing the debt in bad faith (they clearly owe it but refuse to acknowledge it), your documentation becomes even more important if you end up in court.

Preventing unpaid invoices in the future

The easiest debt to collect is the one that never happens. Require payment upfront or at the time of sale whenever possible. If you must extend credit, set clear terms: payment due within 30 days, late fees after that date, and consequences for non-payment. Put these terms in writing on the invoice or in a signed agreement. Send invoices promptly and follow up within a week if payment is not received. Many customers straightforward forget or miss due dates; a reminder email often brings payment without conflict.

For larger transactions, consider requiring a deposit upfront and the balance on completion. For ongoing customers, set a credit limit and stop providing goods or services if they fall behind. These practices reduce the amount you have to chase down later.

Frequently Asked Questions

How long can I wait before I have to take action?

There is no legal important date to collect a debt, but the longer you wait, the harder it becomes. Most states have a statute of limitations (usually 3 to 6 years) after which you cannot sue, but this clock starts when the debt was created, not when you decide to pursue it. Start collection efforts within 30 to 90 days of the due date while the debt is fresh and the customer still remembers the transaction.

Can I charge interest or late fees on an unpaid invoice?

Only if you stated those terms upfront in writing—on the invoice, in a contract, or in your standard terms of sale. If you did not mention late fees before the customer owed you money, you generally cannot add them later. Check your state's laws, as some states cap how much interest you can charge.

What if the customer is a business, not an individual?

The process is the same, but businesses are often slower to pay and may have formal payment procedures (like requiring an invoice number or purchase order). Contact their accounts payable department directly and ask what information they need to process payment. Businesses are also more likely to have insurance or bonding that covers unpaid debts, so ask if they do.

Do I need a lawyer to file in small claims court?

No. Small claims court is designed for people to represent themselves without a lawyer. However, you can hire one if you want; some lawyers offer flat fees for small claims cases. The court clerk can answer questions about how to file and what to bring, and many courts offer free guides on their websites.

What if I win in court but the customer still does not pay?

A judgment is a court order, but it does not automatically transfer money to your account. You must take additional steps to collect, such as filing for wage garnishment (the court orders the customer's employer to send part of their paycheck to you) or a bank levy (the court orders the bank to freeze and transfer funds from their account). These processes vary by state and require filing more paperwork with the court. Ask the court clerk what collection methods are available in your state.