An overdue invoice is frustrating. Silence after repeated reminders makes it harder to decide whether to wait, negotiate, or pursue legal action. For California businesses, a useful escalation timeline starts with confirming the debt and ends with a practical assessment of collection options. If you are searching for “customer not paying not responding,” this guide explains how to organize your records, set reasonable deadlines, and avoid collection tactics that can create legal problems.
Days 1–7: Confirm the payment obligation
Start counting from the payment due date, not the invoice date. These time ranges are planning tools, not legally required waiting periods. Your contract may require particular notices, a cure period, mediation, or arbitration before further action.
Before contacting the customer again, verify that payment is actually overdue and that your business fulfilled its obligations. A missing invoice, incorrect billing address, or unresolved delivery issue may explain the silence.
- Review the agreement: Confirm the customer’s legal name, payment terms, notice requirements, and dispute-resolution provisions.
- Check performance: Gather delivery confirmations, acceptance emails, time records, or other evidence that you provided the goods or services.
- Reconcile the balance: Account for deposits, credits, partial payments, and any agreed adjustments.
- Verify the recipient: Confirm the accounts-payable contact and required submission method.
Do not assume a business owner personally owes a company’s debt. Personal liability requires a separate legal basis, such as an enforceable personal guaranty. Identifying the correct debtor early can prevent wasted effort later.
Days 8–14: Address a customer not paying not responding
Send a concise written reminder with the invoice attached. State the amount owed, the original due date, and how to pay. Ask whether the customer disputes the invoice or needs additional documentation. Give a specific, reasonable response date rather than sending daily messages.
A useful reminder might say: “Invoice 1042 for $6,800 was due August 1. Please confirm payment status by August 14, or identify any issue with the invoice so we can review it.” Keep the language factual and preserve a copy.
Use an established business contact channel. Avoid contacting unrelated employees, family members, or customers to pressure the debtor. Do not publicly disclose the debt, imply criminal consequences for ordinary nonpayment, or claim that a lawsuit has been filed when it has not.
If the customer responds with a genuine performance dispute, review the supporting records before escalating. A disputed invoice requires a different approach from an acknowledged balance awaiting payment.
Days 15–30: Send a documented payment demand
If reminders produce no meaningful response, consider a formal written demand. Follow contractual notice provisions, including any required delivery method or address. Retain the letter and available delivery records. A demand letter does not itself establish liability or authorize seizure of property.
The demand should usually include:
- The parties’ legal names and the agreement or transaction involved.
- The unpaid principal and a clear explanation of the calculation.
- The payment deadline and instructions for submitting payment.
- A way to raise a dispute or propose a repayment arrangement.
- An accurate statement of the next step you are considering.
Add interest, late charges, or attorney fees only when there is a valid contractual or legal basis. A collection letter cannot create rights absent from the agreement or applicable law.
California collection rules require careful attention. The Rosenthal Fair Debt Collection Practices Act, Cal. Civ. Code § 1788 et seq., generally concerns consumer debts and, for transactions entered into, renewed, sold, or assigned on or after July 1, 2025, also covers certain “covered commercial debts.” That commercial-debt coverage is limited: it generally requires money owed by a natural person to a lender, commercial financing provider, or debt buyer in connection with covered commercial credit transactions totaling no more than $500,000. A routine trade invoice owed by a corporation or other business to its vendor is generally not covered by the Rosenthal Act or the federal FDCPA, which generally does not cover business debts. Other laws and common-law limits may still apply. Analyze the debtor, creditor, transaction date, transaction type, amount, and collector’s role before relying on either statute.
Days 31–45: Compare negotiation with legal escalation
At this stage, focus on whether further action makes financial sense. An attorney providing California debt collection services can assess the evidence, contractual requirements, potential defenses, and likely enforcement costs. The amount owed is only one part of that analysis.
Consider whether the customer remains active, whether its identity and address are reliable, and whether it appears to have assets available for lawful collection. A judgment does not automatically produce payment. Bankruptcy, insolvency, or competing claims can substantially affect recovery.
A payment plan may be more practical than immediate litigation. Put installment amounts, due dates, and the consequences of a missed payment in writing. Clarify whether any discount depends on timely completion and whether the agreement releases claims. Avoid accidentally giving up existing rights through an informal settlement email.
Escalate sooner if there are signs of business closure, an approaching filing deadline, or another time-sensitive issue. Do not treat this timeline as a reason to delay legal review.
Day 46 and beyond: Choose the appropriate forum
If voluntary payment is unlikely, evaluate small claims court, a civil lawsuit, or contractually required arbitration. The appropriate route depends on the amount, the parties, venue, and the agreement. Small claims has eligibility and monetary limits, and attorneys generally cannot represent parties at the initial hearing.
Check filing deadlines independently of your reminder schedule. California generally provides four years for an action founded on a written contract under Code of Civil Procedure § 337 and two years for an action on a contract not founded on a writing under § 339. But a claim for breach of a contract for the sale of goods is generally governed by California Commercial Code § 2725: four years after accrual, subject to a reduction in the original agreement to not less than one year. Accrual, tolling, and other exceptions must be analyzed separately. Sending demands or negotiating does not necessarily pause the deadline.
Before filing, assemble the agreement, invoices, performance records, payment history, correspondence, and balance calculation. Litigation requires proper service and an opportunity for the defendant to respond. Even an unanswered lawsuit requires the appropriate court process before a judgment can be entered.
Talk to a California business attorney
Itkin Law offers a free consultation for businesses and individuals evaluating unpaid debts, collection demands, and next steps. Schedule a free consultation or call (424) 603-8888.
This article is attorney advertising and provides general information only. It is not legal advice and does not create an attorney–client relationship. The law changes, and this article reflects the law as of its publication date. Every situation is different — contact us to discuss how the law applies to your exact circumstances. See our full disclaimer.

