An overdue invoice can become a legal dispute long before anyone files a lawsuit. Your payment reminders may later become evidence of what was owed, what you demanded, and whether your collection practices were lawful. For California businesses and individuals seeking payment, a sound dunning sequence combines accurate accounting, measured communications, and a clear response to disputes. This article explains how to build that sequence without confusing ordinary invoice follow-up with statutory debt collection requirements.
Making the dunning process legal in California
A dunning sequence is a planned series of communications requesting payment after an account becomes overdue. There is no universal sequence that makes every collection effort lawful. Before sending reminders, identify the debt, the parties, and the rules that apply.
- Commercial or consumer debt: Was the obligation incurred primarily for business purposes or for personal, family, or household purposes? Certain commercial debts also fall within California’s Rosenthal Act.
- Who is collecting: Are you the original creditor, a collection agency, a debt buyer, or another party?
- Who owes payment: Is the obligor an individual, corporation, or LLC? Do not assume an owner personally owes an entity’s debt.
- What supports the balance: Review the agreement, invoices, delivery records, credits, and payment history.
The federal Fair Debt Collection Practices Act generally applies to qualifying debt collectors collecting consumer debts, not ordinary business debts or most original-creditor collection activity. California’s Rosenthal Fair Debt Collection Practices Act, Cal. Civ. Code § 1788 et seq., defines “debt collector” more broadly and can reach original creditors. It regulates consumer debt collection and, under amendments effective July 1, 2025, collection of certain covered commercial debts. Civil Code § 1788.17 exempts creditors and persons described in 15 U.S.C. § 1692a(6)(A)–(B) from the incorporated federal validation-notice requirements of § 1692g and disclosure requirements of § 1692e(11). Coverage depends on the facts, not simply the label on a reminder. Legal review of your debt collection practices can help identify the requirements for each workflow.
Build the evidence before sending the first notice
A persuasive payment demand starts with a supportable account balance. Confirm that the customer accepted the relevant terms and that your business performed its obligations. An invoice alone may not establish an agreed price, satisfactory performance, or an enforceable late charge.
Create an account file containing:
- The signed agreement, accepted order, and relevant amendments.
- Invoices showing services or goods, amounts, and due dates.
- Evidence of delivery, completion, acceptance, or customer objections.
- A ledger showing payments, credits, principal, and separately identified charges.
- Communications about payment terms, extensions, or disputed work.
Check interest and fees against the agreement and applicable law before including them. A term printed on a later invoice does not necessarily amend the original contract. For covered debt collectors, 15 U.S.C. § 1692f(1) prohibits collecting amounts unless expressly authorized by the agreement creating the debt or permitted by law.
Use a measured sequence, not automatic escalation
Timing should reflect the agreement, account history, and applicable collection rules. A commercial account might use the following sequence, but these intervals are workflow examples, not statutory deadlines:
- Initial overdue reminder: Identify the invoice, due date, and balance. Provide payment instructions and a way to report an error.
- Follow-up notice: State that payment remains outstanding, summarize prior contact, and request payment or a substantive response by a reasonable date.
- Formal demand: Explain the contractual basis for payment, separate principal from other charges, and state a response deadline.
- Legal review: Assess the evidence, dispute history, deadlines, and available remedies before further escalation.
Do not threaten litigation unless that step is lawful and genuinely contemplated. Avoid implying that a judgment, garnishment, or lien already exists when it does not. A letter should not appear to come from an attorney unless the attorney is actually involved.
Keep collection communications directed to appropriate recipients. Contacting relatives, unrelated employees, or public audiences can create privacy and collection-law problems. Consumer communications and communications about covered commercial debts require review of applicable restrictions rather than automatic reuse of a commercial reminder template.
Stop the sequence when a dispute requires review
A customer who says “we never received the goods” or “that payment was already made” has raised an issue that deserves investigation. Pause automated escalation, preserve the message, and reconcile the account. Separate a request for more time from a genuine dispute about liability or amount.
For a debt collector covered by the federal FDCPA and collecting a consumer debt, 15 U.S.C. § 1692g requires specified validation information in the initial communication or within five days afterward, unless an exception applies. The notice must explain the consumer’s rights during the 30 days after receipt, including the right to dispute the debt and to request the original creditor’s name and address. A timely written dispute requires the collector to cease collection of the disputed debt or portion until it obtains verification of the debt or a copy of a judgment and mails the required material to the consumer. A timely written request for the original creditor’s name and address likewise requires collection to cease until that information is mailed. California Civil Code § 1788.17 does not impose these federal validation requirements on creditors and persons described in 15 U.S.C. § 1692a(6)(A)–(B).
Where validation rights apply, do not assume that giving a seven-day payment deadline replaces them. Collection communications during the validation period must not overshadow or contradict those rights. Other instructions, including qualifying requests to stop communications, can trigger separate restrictions. Ordinary commercial disputes do not carry federal FDCPA validation rights, but California law may impose requirements for covered commercial debts. Investigating disputes also improves accuracy and the evidentiary record.
Preserve records and watch filing deadlines
Save each communication as sent, including attachments, delivery information, responses, and account adjustments. Record the reason for any corrected balance. Preserve original records rather than overwriting them when a dispute arises.
California generally provides four years for actions on contracts founded on an instrument in writing under Code of Civil Procedure § 337 and two years for actions on contracts not founded on a writing under § 339. Exceptions include California Commercial Code § 2725, which generally provides four years for breach of a contract for the sale of goods. Accrual, tolling, applicable discovery rules, contractual provisions, and the nature of the claim can change the analysis. Ordinary reminders or negotiations do not automatically extend the filing deadline. A qualifying written acknowledgment or promise signed by the party to be charged—and, in specified circumstances, a payment on a promissory note before the claim is barred—may affect the limitations calculation under Code of Civil Procedure § 360.
Before suing, review arbitration clauses, notice requirements, the proper defendant, and evidence of performance. Consider collectability separately from liability: a strong claim does not necessarily mean the debtor has assets available to satisfy a judgment.
Talk to a California business attorney
Itkin Law offers a free consultation for businesses and individuals who need to assess payment demands, collection procedures, or an overdue account. 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.

