Cal. Bus. & Prof. Code § 17200
California's Unfair Competition Law: four years, and no damages at all
A claim in California superior courts · Last verified August 26, 2026
The Unfair Competition Law is bolted onto almost every consumer, employment, and business complaint filed in California, and for two specific reasons.
It borrows. Any violation of any other law becomes an unfair business practice, which means a statute with no private right of action can be enforced through § 17200.
And it carries a flat four-year deadline that displaces the shorter period the borrowed statute would otherwise impose.
What it does not do is pay damages. Restitution and an injunction are the entire menu for a private plaintiff — which is why the UCL is almost never pleaded alone.
What the claim is
A business did something unlawful, unfair, or fraudulent, or advertised in a misleading way, and you lost money or property because of it.
The claim is disjunctive: you need prove only one prong.
Where the right comes from
Business and Professions Code § 17200, which defines unfair competition to
mean and include any unlawful, unfair or fraudulent business act or practice and unfair, deceptive, untrue or misleading advertising.
What a plaintiff has to prove — three independent prongs
The unlawful prong borrows a violation of any other law — federal, state, or local, civil or criminal — and makes it independently actionable here. This is the workhorse. A statute that provides no private remedy of its own can be enforced through the UCL.
The unfair prong is unsettled, and the split is worth naming rather than papering over:
- For competitor suits, the test is tethered to an antitrust-type policy — the conduct must threaten an incipient violation of an antitrust law or violate its policy or spirit (Cel-Tech Communications, Inc. v. Los Angeles Cellular Telephone Co. (1999) 20 Cal.4th 163).
- For consumer suits, the Courts of Appeal have not settled on one test. Some apply a balancing test weighing utility against harm, some a test tethered to a legislatively declared policy, and some extend Cel-Tech. This is a live split — check your district.
The fraudulent prong asks whether members of the public are likely to be deceived, judged by the reasonable consumer. Actual deception, reliance, and damage are not required in the way common-law fraud demands.
There is no CACI instruction for the elements, because the claim is equitable and tried to the court.
How long you have to file
Four years, flat, under Bus. & Prof. Code § 17208 — and the California Supreme Court has said the provision "admits of no exceptions."
The consequence is the most useful thing on this page. The four years applies even where the borrowed predicate carries a shorter period. A fraud predicate that would expire in three years under CCP § 338, or a wage claim that would expire in three, gets four years when repackaged as a UCL claim.
That is why the UCL appears in so many complaints that are otherwise about something else: it is a year of extra reach.
Delayed discovery, continuous accrual, and equitable tolling can each apply depending on the underlying conduct.
What has to happen before you file
Nothing for the bare UCL claim.
But check the borrowed predicate. If you are borrowing a statute that has its own pre-suit requirement, that requirement may travel with it. The clearest example is the Consumers Legal Remedies Act, which requires a 30-day written demand before damages can be sought — a UCL claim borrowing a CLRA violation should not be used to route around it.
Who can be sued — and who cannot
Any person or business engaged in the practice.
Standing narrowed sharply in 2004. Before Proposition 64, anyone could sue on behalf of the general public without having been injured. Now a private plaintiff must have "lost money or property as a result of" the practice — an actual, individualised economic injury — and a representative action must proceed as a class action under ordinary certification standards.
Public prosecutors — the Attorney General, district attorneys, and certain city attorneys — retain broader authority and may seek civil penalties, which private plaintiffs cannot.
Common defenses
No predicate violation, on the unlawful prong.
The safe harbour — conduct a statute affirmatively permits cannot be "unfair," even if a court would otherwise think it unreasonable.
No lost money or property, attacking standing under Proposition 64.
The reasonable consumer standard, on the fraudulent prong.
Anti-SLAPP under CCP § 425.16, where the practice was protected speech — subject to the commercial speech exemption at CCP § 425.17, which was enacted precisely because anti-SLAPP was being used against consumer claims it was never meant to reach.
Primary jurisdiction and preemption, where a regulator occupies the field.
What the claim pays — say it plainly
Restitution and injunctive relief. That is all.
No damages. No punitive damages. No nonrestitutionary disgorgement — a private plaintiff cannot make the defendant give up profits that never came out of the plaintiff's own pocket, which the Supreme Court settled in Korea Supply Co. v. Lockheed Martin Corp. (2003) 29 Cal.4th 1134.
Restitution means money or property the defendant took from you in which you have an ownership interest. It is narrower than damages and much narrower than disgorgement.
Civil penalties are available only to public prosecutors.
No fees under the statute itself — but CCP § 1021.5, the private attorney general doctrine, can supply them where the litigation enforced an important right affecting the public interest.
No jury. The claim is equitable and tried to the court, which has real strategic consequences when it is pleaded alongside legal claims.
Its companion — the False Advertising Law, § 17500
Business and Professions Code § 17500 forbids making or disseminating any statement concerning property or services that is untrue or misleading, and that is known or should reasonably be known to be untrue or misleading, with intent to dispose of the property or perform the services.
It is nearly always pleaded with § 17200, and for a reason that is circular in a useful way: a violation of § 17500 is itself an unlawful business practice, so it supplies its own UCL predicate.
What it adds: a dedicated advertising provision that does not require borrowing another statute, and one that reaches misleading statements as well as untrue ones. The standard is the same reasonable consumer test the fraudulent prong uses.
What it does not add: any additional remedy. Section 17500 pays restitution and injunctive relief only, exactly as § 17200 does. No damages. No jury. A plaintiff who wants damages for false advertising needs the CLRA or common law fraud.
Standing is the same — Proposition 64 amended both statutes together, so a private plaintiff must have lost money or property as a result.
And the limitations period is where it gets confusing, so state it precisely. The False Advertising Law contains no express limitations period. Standing alone, a § 17500 claim takes three years under CCP § 338(a) as a liability created by statute. But because it is almost always litigated alongside a UCL claim resting on the same advertising, the effective period is the UCL's four years. Both answers circulate because both are right in their own posture.
What people get wrong
"The UCL is a damages statute." It is not. Restitution and an injunction, and nothing else, for a private plaintiff.
"I can make them disgorge their profits." Not unless the money came from you. Korea Supply bars nonrestitutionary disgorgement.
"Anyone can sue under 17200." Not since Proposition 64. You need actual lost money or property, and representative claims must be certified as class actions.
"There's no private right of action in the statute I want to use, so I'm stuck." That is exactly what the unlawful prong is for.
"My fraud claim expired at three years." As a UCL claim it may still be live at four.
"I'll get a jury." You will not on the UCL claim, and not on a False Advertising Law claim either.
"False advertising is a damages claim." It is not. Section 17500 pays restitution and an injunction, the same as § 17200.
Where it came from
The UCL began as a narrow unfair-competition provision and grew, through judicial construction, into something close to a general-purpose statute for challenging business conduct — broad standing, a borrowed-violation prong, and a four-year clock.
The voters cut it back in 2004. Proposition 64 responded to a documented pattern of firms filing suits on behalf of "the general public" against small businesses over technical violations, then settling for fees without any client having been harmed. It imposed the injury requirement and the class action requirement, and it substantially reduced filings.
The two decisions that most define what remains are Cel-Tech (1999), which supplied the unfair test for competitor cases and expressly left the consumer test open, and Cortez (2000), which held the four-year period admits of no exceptions.
The consumer "unfair" prong split is the live question and has been for twenty-five years.
Common questions
Can I get damages under section 17200?
No. A private plaintiff can recover restitution — money or property the defendant took from you — and obtain an injunction. There are no damages and no punitive damages, which is why the UCL is nearly always paired with a claim that allows them.
How long do I have to sue?
Four years, and the period is flat. It applies even where the law you are borrowing carries a shorter deadline, which is a common reason to add a UCL claim.
Can I use the UCL to enforce a statute that has no private right of action?
Generally yes. The unlawful prong borrows a violation of almost any other law and makes it actionable, subject to the safe harbour where the conduct is affirmatively permitted.
Do I have to have been personally harmed?
Yes, since Proposition 64 in 2004. You must have lost money or property as a result of the practice, and a representative claim must proceed as a certified class action.
Will a jury decide my UCL claim?
No. The claim is equitable and tried to the court, even when pleaded alongside claims that carry a jury right.