California SB 1286: Rosenthal Act Now Covers Business Debt (2026)

 California SB 1286: Rosenthal Act Now Covers Business Debt (2026)

October 8, 2026 | Washington Law Firm 

For decades, California’s Rosenthal Fair Debt Collection Practices Act protected consumers, meaning people who owed money for personal, family, or household purposes. Business debt was largely left out. That changed with Senate Bill 1286, signed in September 2024. In 2025, the Legislature narrowed the law with Assembly Bill 1521. If you are a Los Angeles–area business owner, a personal guarantor of a business loan, or a company that collects commercial accounts, both laws may affect you.

What SB 1286 Changed in California’s Rosenthal Act

SB 1286 (Chapter 522, Statutes of 2024) amended the Rosenthal Act (Civil Code section 1788 and following) to cover a new category called “covered commercial debt.” The main features are:

• Who is protected. Covered commercial debt is money owed by a natural person, not a corporation or LLC, on business-purpose transactions. Sole proprietors are covered, and so are individuals who personally guarantee a business’s obligations. For these debts, the law expressly treats a guarantor as a “debtor.”
• Which debts count. The debt must be owed to a lender, a commercial financing provider, or a debt buyer. The combined amount the person owes to that same creditor cannot exceed $500,000.
• When it applies. The protections apply to covered commercial debt entered into, renewed, sold, or assigned on or after July 1, 2025. A business debt that began before that date and has not been renewed, sold, or assigned since generally falls outside the new rules.
• What collectors cannot do. The Rosenthal Act’s existing prohibitions on harassing, deceptive, and unfair collection conduct now apply to covered commercial debt. Under California law, a “debt collector” can include an original lender collecting its own debt, not just third-party collection agencies.
• Where a guarantor can be sued. When a debt arises from a personal guaranty, the collector may sue in the county where the business is located. This is an exception to the usual rule tying venue to where the debtor resides or incurred the debt.
• No new licensing. The law states that it does not create any additional debt collector licensing requirement for commercial debt.

AB 1521 (2025): Trade Credit and Dealer Financing Exclusions

AB 1521, the Assembly Judiciary Committee’s 2025 omnibus bill (Chapter 200, Statutes of 2025), took effect January 1, 2026. It removed two categories from “covered commercial debt”:

1. Certain vehicle dealer financing. This covers commercial financing transactions of at least $50,000 where the recipient is a vehicle dealer or a dealer affiliate.
2. Trade credit. This is, generally, credit extended by a business that supplies goods, materials, equipment, or related services. The term has its own statutory definition, so the exact wording matters.

In practice, a supplier invoicing customers on net-30 terms is likely outside the Act. A lender, a commercial financing provider, or a debt buyer collecting on a loan or line of credit from a sole proprietor or guarantor may still be inside it.

Personal Guarantors and Small-Business Debt Collection in California

For small-business owners and guarantors: If a lender or debt buyer is pursuing you personally on a business debt of $500,000 or less, you may now have Rosenthal Act rights you did not have before. Abusive or deceptive collection conduct can support claims for damages and statutory penalties. A violation does not erase the underlying debt, but it can change your leverage in negotiation or litigation.

For people weighing bankruptcy or debt relief: Business owners under financial pressure often face aggressive collection on personal guaranties. Knowing whether the Rosenthal Act applies can shape strategy: whether to negotiate, defend a collection lawsuit, assert counterclaims, or seek bankruptcy protection.

For creditors and collectors: Commercial lenders, financing providers, and debt buyers should check whether accounts originated, renewed, sold, or assigned after July 1, 2025 fall within the $500,000 threshold. They should also check whether the trade credit or dealer financing exclusions apply. Collection letters, call scripts, and venue practices may need updating.

Checklist: Is Your Business Debt Covered?

• Is the person being pursued a natural person, such as a sole proprietor or personal guarantor?
• Is the creditor a lender, a commercial financing provider, or a debt buyer?
• Is the total owed to that creditor $500,000 or less?
• Was the debt entered into, renewed, sold, or assigned on or after July 1, 2025?
• Does the trade credit or vehicle dealer financing exclusion apply?

If the answers point toward coverage, the Rosenthal Act’s conduct rules likely govern the collection effort.

Frequently Asked Questions

Does the Rosenthal Act apply to business debt in California?
Yes, in some cases. Since July 1, 2025, it applies to certain business debts owed by individuals, including personal guarantors, when the total owed to one creditor is $500,000 or less.

Does SB 1286 apply to debts owed by a corporation or LLC?
Not to the company itself. Coverage requires a natural person who owes the debt, which includes an individual who personally guaranteed the company’s obligation.

Does SB 1286 apply to trade credit?
No. AB 1521 excluded qualifying trade credit beginning January 1, 2026.

Does a Rosenthal Act violation cancel the debt?
No. A violation can give the debtor claims against the collector, but it does not erase the underlying debt.

The Bottom Line

SB 1286 marked a significant shift by extending California’s debt collection protections beyond consumer debt to individuals who stand behind small-business obligations. AB 1521 has since narrowed that reach. Because the law is new and still being refined, the details of each transaction matter.

If you are facing collection on a business debt or personal guaranty in Los Angeles or elsewhere in Southern California, contact us or call 877-807-2008 to discuss your options.

This article is for general informational purposes only and is not legal advice. Reading it does not create an attorney-client relationship. Laws change, and the application of any law depends on the specific facts. Please consult an attorney about your particular situation.