When you go into business with someone, California law imposes duties that no handshake or contract needs to spell out. A partner who diverts opportunities, hides finances, or competes against the business may be liable for breach of fiduciary duty — one of the most consequential claims in partnership and LLC disputes. This article explains what those duties require, what a breach looks like, and what an injured partner can recover.
What fiduciary duties do California partners owe?
For general partnerships, Corporations Code § 16404 defines the fiduciary duties partners owe the partnership and each other: the duty of loyalty and the duty of care. The duty of loyalty requires a partner to account for any benefit derived from partnership business or property, to refrain from dealing with the partnership on behalf of an adverse interest, and to refrain from competing with the partnership before dissolution. The duty of care requires refraining from grossly negligent or reckless conduct, intentional misconduct, or knowing violations of law. Partners must also exercise their rights consistently with the contractual obligation of good faith and fair dealing.
Managers of California LLCs owe parallel duties under Corporations Code § 17704.09, and in a member-managed LLC the members themselves owe them. Corporate directors and officers owe fiduciary duties to the corporation and, in some circumstances, majority shareholders owe duties to the minority. The label on your entity matters less than the underlying principle: people who control a business or its money must put the business first.
Common ways partners breach these duties
In our experience with California businesses, fiduciary duty disputes tend to follow familiar patterns:
- Self-dealing — steering partnership contracts to a company the partner secretly owns, or leasing property to the business at inflated rates.
- Usurping business opportunities — taking a deal that belonged to the partnership and doing it on the side.
- Secret compensation — undisclosed kickbacks, vendor rebates, or salary a partner pays themself without authorization.
- Competing before the partnership ends — quietly launching a rival venture while still drawing on partnership resources and relationships.
- Financial concealment — refusing to share books and records, misstating accounts, or draining cash through personal expenses.
- Freeze-outs — majority owners cutting a minority partner off from distributions, information, or management to force a cheap buyout.
What you have to prove
A breach of fiduciary duty claim in California has three core elements: the existence of a fiduciary relationship, breach of the duty, and damage proximately caused by the breach. The first element is usually straightforward between partners or LLC managers. The fight is typically over breach and causation — which is why records matter. Bank statements, emails, board minutes, and QuickBooks entries often decide these cases. If a partner is blocking access to records, California law gives partners and LLC members statutory inspection rights, and a court can compel production.
Remedies: more than just damages
Because fiduciary claims sound in equity as well as law, the remedies go beyond ordinary contract damages:
- Compensatory damages for losses the breach caused the business or the injured partner.
- Disgorgement — a disloyal fiduciary can be forced to give up profits earned through the breach, even profits the partnership itself never would have made.
- An accounting — a court-supervised reconstruction of the books to trace where money went.
- Constructive trust over assets or opportunities the fiduciary wrongfully took.
- Removal, dissolution, or buyout — depending on the entity and circumstances, removal may be available, and courts can appoint a provisional manager or receiver, order judicial dissolution, or, in LLC dissolution actions, allow the other members to buy out the moving party's interest.
- Punitive damages where the breach involved malice, oppression, or fraud under Civil Code § 3294.
Deadlines and defenses to expect
The limitations period for breach of fiduciary duty is generally four years under the catch-all statute, CCP § 343, but a claim grounded in fraud or concealment is governed by the three-year period of CCP § 338(d) — which begins to run when the plaintiff discovers, or reasonably should have discovered, the facts. Waiting is dangerous either way: memories fade, records disappear, and delay itself becomes a defense. Expect the accused partner to argue that the operating agreement authorized the conduct, that you consented or ratified it, or that the business judgment rule protects the decision. A well-drafted operating agreement can narrow some fiduciary duties, but under California law it cannot eliminate the duty of loyalty outright or authorize bad-faith conduct.
Practical first steps before you sue
Start by exercising your inspection rights in writing and preserving every relevant communication. Then get a clear-eyed assessment of the numbers: fiduciary litigation is document-heavy, and an early forensic look at the books often determines whether you are looking at a negotiated buyout or a business litigation matter. Many partner disputes resolve through a structured separation — one side buys the other out at a supported valuation — and a credible, evidence-backed claim is what brings the other side to that table. Sound corporate governance documents drafted before trouble starts remain the cheapest insurance against these fights.
Talk to a California business attorney
If a partner is self-dealing, concealing finances, or freezing you out, an early legal strategy can protect both your investment and the company. Schedule a free consultation or call (949) 418-2113.
This article is attorney advertising and provides general information only. It is not legal advice and does not create an attorney–client relationship. Facts matter; consult a lawyer about your specific situation.
