For a corporate fiduciary contemplating a self-interested transaction, the legal landscape can look like one continent with two languages. Delaware speaks of “entire fairness.” California, on the other hand, speaks of “inherent fairness.” Both doctrines spring from the same equitable instinct—a deep suspicion of the fiduciary who tries to wear two hats at once—but they have developed in different ecosystems, with different statutes, different case law, and different procedural plumbing. Three observations follow.
First, California’s trigger for fairness review is broader on the page than Delaware’s, even after Delaware’s recent expansions. Second, the standards are similar in substantive aspiration but materially different in mechanics, and they are not interchangeable. Third, California courts occasionally borrow Delaware’s “entire fairness” terminology, and that borrowing is sometimes careless in ways that can mislead litigants and trial courts.
The Trigger: Where Fairness Review Begins
Delaware. Delaware’s entire fairness standard is engaged when the board’s decision-making is compromised by self-interest or domination. Classically, that means a controller stands on both sides of the transaction, Weinberger v. UOP, Inc., 457 A.2d 701, 710-11 (Del. 1983), or a majority of the board lacks disinterest and independence, In re Trados Inc. S’holder Litig., 73 A.3d 17, 44-46 (Del. Ch. 2013). The Delaware Supreme Court has continued to refine the inquiry. Most recently, In re Match Group, Inc. Derivative Litig., 315 A.3d 446 (Del. 2024), extended the MFW framework to controller transactions conferring a non-ratable benefit even outside the classic freeze-out context, and the 2025 amendments to Section 144 of the DGCL have begun to codify when those standards attach. The trigger, in other words, is keyed to specific structural defects in the deliberative process.
California. California’s trigger draws a wider arc. Section 310 of the Corporations Code reaches any contract or transaction “between a corporation and one or more of its directors, or between a corporation and any corporation, firm or association in which one or more of its directors has a material financial interest.” Cal. Corp. Code § 310(a). The statute does not require that the conflicted director stand on both sides of the deal in any controlling sense; a material financial interest will do. The case law extends fairness review well beyond the boardroom. In Remillard Brick Co. v. Remillard-Dandini Co., 109 Cal. App. 2d 405, 420 (1952), the Court of Appeal articulated a “comprehensive rule” demanding “inherent fairness from the viewpoint of the corporation and those interested therein.” The California Supreme Court extended that rule in Jones v. H.F. Ahmanson & Co., 1 Cal. 3d 93, 108 (1969) to controlling shareholders “in the exercise of powers that are theirs by virtue of their position.” That phrasing reaches well beyond a single conflicted contract; it gestures at any use of controlling power, in any form, that disadvantages the minority.
The upshot. On paper, California’s trigger is broader. A Delaware plaintiff often must show that the controller stood on both sides or that a majority of directors lacked independence. A California plaintiff need only show a material financial interest, or more sweepingly, an exercise of control to the detriment of the minority. Delaware has worked hard to catch up. Match Group, in particular, sweeps in non-ratable-benefit controller transactions that would have escaped review under earlier readings. But the textual starting line in California remains noticeably closer to the runner.
That said, Match Group itself is no longer definitive Delaware law for all conflicted transactions. Match Group held that the entire fairness standard of review applied to any transaction where a controlling stockholder received a non-ratable benefit. To secure the more lenient Business Judgment Standard, defendants were required to satisfy both parts of the MFW framework, requiring approval by an independent committee and a vote by a non-coerced, informed minority stockholders. The 2025 Amendments to the Delaware General Corporation Law provided a safe harbor for conflicted transactions if only one of these procedures is followed.
The Test: Similar in Principle
Once a transaction enters the fairness lane, the two doctrines do similar work with different instruments.
Delaware. Delaware’s Weinberger test is famously two-pronged: “[t]he concept of fairness has two basic aspects: fair dealing and fair price.” 457 A.2d at 711. Fair dealing examines “when the transaction was timed, how it was initiated, structured, negotiated, disclosed to the directors, and how the approvals of the directors and the stockholders were obtained.” Id. Fair price examines the economic and financial terms. The burden begins on the defendant fiduciary and can shift to the plaintiff through, for example, a vote by fully-informed, disinterested stockholders, or the use of an independent special committee. See Kahn v. Lynch Commc’n Sys., Inc., 638 A.2d 1110, 1117 (Del. 1994). Most powerfully, Kahn v. M & F Worldwide Corp., 88 A.3d 635 (Del. 2014), provided a cleansing path: if a controller transaction is conditioned ab initio on both an independent, fully functioning special committee and an uncoerced majority-of-the-minority vote, the business judgment rule applied. However, as discussed above, this framework was nullified by the 2025 Amendments.
California. California’s framework is closer to first principles. Section 310 articulates a “just and reasonable” standard, with three pathways: (1) full-disclosure approval by disinterested directors; (2) full-disclosure approval by disinterested shareholders; or, failing those, (3) proof by the proponent “that the contract or transaction was just and reasonable as to the corporation.” Cal. Corp. Code § 310(a). The case law overlay sounds in equity rather than mechanics. Jones v. Ahmanson’s “fair, just, and equitable” formulation, 1 Cal. 3d at 108, and Remillard Brick’s “inherent fairness from the viewpoint of the corporation and those interested therein,” 109 Cal. App. 2d at 420, were not drafted to map cleanly onto a fair-dealing-versus-fair-price binary. Rather, they are open-textured invitations to scrutinize self-dealing for what it is.
Where the doctrines diverge. Delaware and California law’s substantive concerns are the same: fair price, fair process, and no opportunistic taking by a fiduciary. The mechanics, however, differ in ways that matter. Three stand out. First, Section 310’s cleansing turns on disclosure and approval; it does not allow approval of a conflicted transaction solely by an Independent Committee, which is now permitted by the 2025 Delaware Amendments. Second, Delaware’s burden-shifting has been refined through decades of case law, whereas California’s burden allocation under Section 310 is comparatively spare on paper and underdeveloped in the case law. Third, the cleansing effect of a fully informed disinterested stockholder vote, now codified in the 2025 Amendments, has no clean California analog beyond the textual safe harbors of Section 310 itself.
Put another way: The standards are similar in aspiration, but not in their machinery. Delaware speaks in code, through switches, conditions, and fallbacks. California, by contrast, speaks in prose, through an equitable invitation atop a statutory backbone. If a transaction must pass through both states’ courts, counsel must plan for both.
When California Speaks Delaware: The Citation Problem
Because Delaware corporate law casts such a long shadow in California courtrooms, California opinions routinely cite Delaware authorities. The question worth asking, before any such citation, is whether the borrowing fits the corporation.
Legitimate borrowing. When a Delaware corporation is sued in California court, the internal-affairs doctrine mandates that the court rely on Delaware law, and Delaware’s entire fairness standard travels with it. Take, for example, Central Laborers’ Pension Fund v. McAfee, Inc., 17 Cal. App. 5th 292, 311-15 (2017). The defendant in Central Laborers’ was a Delaware corporation, and the California Court of Appeal applied Delaware’s entire fairness framework, including Weinberger’s fair-dealing/fair-price dichotomy, exactly as a Delaware court would.
Careless borrowing. Sometimes, however, California courts are less careful in their borrowing. California opinions analyzing California corporations under Section 310 and the Remillard/Ahmanson line sometimes reach across the bench for Delaware’s “entire fairness” vocabulary, including its labels, its burden-shifting mechanics, and even its cleansing process, without pausing to ask whether such doctrinal architecture really fits the California statute. The result is an occasional opinion that purports to apply California law, reads like a Delaware Chancery Court decision, and has holdings that may not square with either the California Corporations Code or the equitable tradition that animates it.
California and Delaware have different statutory safe harbors. The process for cleansing conflicted transactions under Delaware law, is not Section 310 cleansing. The procedural-protection regime under Delaware law, codified in the 2025 Amendments, has no Section 310 counterpart. Treating “entire fairness” and “inherent fairness” as synonyms invites lawyers and trial courts to import burden allocations and safe harbors that the California Legislature did not enact and the California Supreme Court has not adopted. The doctrines share DNA, not vocabulary, and the difference is not merely cosmetic.
Conclusion
Delaware’s entire fairness and California’s inherent fairness are cousins, not twins. They share an ancestor, the equitable principle that a fiduciary who deals with herself bears the burden of justifying her conduct. But they have grown up speaking different languages, in different climates, surrounded by different statutory landscaping. California’s trigger is broader on paper; Delaware’s machinery is more elaborate in operation; and the growing line of California opinions that have ventured to borrow Delaware’s vocabulary is a useful reminder that fairness is not a single word in two accents but two doctrines with overlapping concerns and distinct mechanics. For litigators and transactional lawyers advising clients on either side of a conflicted deal, the practical lesson is to start with the right statute, end with the right standard, and never assume that what works in Wilmington works the same way in San Francisco, or that what works in San Francisco needs to be translated into the language of Delaware to count.
For more information regarding Alto Litigation’s litigation practice, please contact one of Alto Litigation’s partners: Bahram Seyedin-Noor, Bryan Ketroser, Joshua Korr, or Kevin O’Brien.
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