Insurer Antitrust Concerns and the FAIR Plan: When Market Withdrawal Looks Coordinated

Between 2023 and 2025, a remarkable pattern unfolded in California’s property insurance market. State Farm announced it would stop accepting new homeowner applications in California. Allstate had already quietly paused new policies. Farmers Insurance began non-renewing tens of thousands of existing policies. USAA reduced its California footprint. Several other carriers followed. The timing was striking — not simultaneous in a single announcement, but compressed into a narrow window that produced the same effect as coordinated action.

The result was predictable: hundreds of thousands of California homeowners were pushed into the California FAIR Plan, the state’s insurer of last resort. The FAIR Plan — designed as a temporary safety net for property owners who cannot obtain coverage in the voluntary market — saw its policy count surge from roughly 272,000 in 2023 to over 450,000 by early 2026. Its total exposure exceeded $450 billion, raising questions about whether the plan itself could survive a major catastrophic event.

This article examines whether the pattern of insurer withdrawals raises legitimate antitrust concerns, what legal frameworks apply, and what policyholders and their advocates should understand about the regulatory landscape.

The Pattern of Withdrawal

To understand why antitrust questions arise, it is important to understand what happened and how it happened. Insurance company market exits do not typically follow this pattern. Individual carriers exit individual markets periodically based on their own loss experience, pricing constraints, and strategic decisions. What occurred in California was different in several respects:

• Concentration of timing. The major withdrawals and non-renewal announcements clustered within an approximately 18-month period. While each carrier cited its own reasons, the practical effect was a near-simultaneous contraction of the voluntary market.
• Similarity of justification. Every withdrawing carrier cited essentially the same reasons: wildfire risk, rising reinsurance costs, regulatory constraints under Proposition 103, and the inability to use catastrophe models for rate-setting. The uniformity of messaging was notable.
• Impact on the FAIR Plan. The withdrawals had the predictable effect of overwhelming the FAIR Plan with volume it was not designed to handle, creating pressure on regulators to approve rate increases and regulatory changes that the carriers had been seeking for years through conventional channels.
• Negotiating leverage.The withdrawals occurred during active regulatory proceedings regarding catastrophe model usage and rate reform. Consumer advocacy organizations, including Consumer Watchdog and the Consumer Federation of California, have noted that the timing of the withdrawals coincided with the industry’s push for specific regulatory concessions.

The Antitrust Framework: McCarran-Ferguson and Its Limits

Any discussion of insurance industry antitrust concerns must start with the McCarran-Ferguson Act (15 U.S.C. §§ 1011–1015), the federal statute that largely exempts the insurance industry from federal antitrust law. Enacted in 1945 in response to the Supreme Court’s decision in United States v. South-Eastern Underwriters Association(1944) 322 U.S. 533, McCarran-Ferguson provides that the “business of insurance” is subject to state regulation and is exempt from federal antitrust statutes “to the extent that such business is regulated by State law.”

This exemption is broad but not unlimited. McCarran-Ferguson contains three critical exceptions:

1. The boycott exception.The exemption does not apply to “any agreement to boycott, coerce, or intimidate, or act of boycott, coercion, or intimidation.” 15 U.S.C. § 1013(b). If insurers’ coordinated withdrawal from a market constitutes a “boycott” within the meaning of the statute, the antitrust exemption falls away entirely.
2. The state regulation requirement.The exemption applies only “to the extent that such business is regulated by State law.” Activities that fall outside the scope of state insurance regulation may not be protected.
3. The “business of insurance” limitation.Only activities that constitute the “business of insurance” are exempt. The Supreme Court in Union Labor Life Insurance Co. v. Pireno (1982) 458 U.S. 119 established a three-part test for determining what qualifies: the activity must involve the spreading and underwriting of risk, the activity must be an integral part of the policy relationship between insurer and insured, and the activity must be limited to entities within the insurance industry.

Conscious Parallelism vs. Conspiracy

Antitrust law distinguishes between conscious parallelism— where competitors independently reach the same conclusion and act similarly — and conspiracy— where competitors agree, explicitly or tacitly, to act in concert. The distinction is critical because parallel conduct alone, without evidence of agreement, does not violate antitrust law.

Insurers defending the withdrawal pattern would argue that each carrier independently evaluated its California exposure, independently concluded that the market was unprofitable under current regulatory constraints, and independently decided to reduce its footprint. The fact that multiple carriers reached the same conclusion is not evidence of coordination — it is evidence that the underlying market conditions affected everyone similarly.

This argument has force. But antitrust law also recognizes that parallel conduct accompanied by certain “plus factors” can support an inference of agreement. In Matsushita Electric Industrial Co. v. Zenith Radio Corp. (1986) 475 U.S. 574, the Supreme Court held that courts should examine whether the parallel conduct is consistent with independent action or whether it makes economic sense only as part of a coordinated strategy. Plus factors that courts consider include:

• Actions against self-interest.Would each carrier’s withdrawal make economic sense standing alone, or does it only make sense if the carrier knows competitors will follow? An insurer that withdraws from a profitable market segment unilaterally loses market share. An insurer that withdraws as part of a coordinated exit suffers no competitive disadvantage.
• Opportunity for communication. Do the carriers have forums, trade associations, or industry groups through which withdrawal strategies could be discussed or signaled? The insurance industry has extensive trade association infrastructure, including the American Property Casualty Insurance Association (APCIA) and various state-level organizations.
• Uniformity of conduct. Is the conduct more uniform than independent decision-making would predict? Independent actors facing the same market conditions would be expected to respond at different times, in different ways, and to different degrees. Highly uniform responses suggest coordination.
• Evidence of signaling. Did carriers make public statements that could be interpreted as invitations for competitors to follow? When a major carrier announces a market exit with extensive public commentary about why the market is untenable, that announcement functions as a signal to competitors.

The Role of Trade Associations and Data Sharing

Insurance is one of the few industries where competitors are legally permitted to share pricing data through licensed rating organizations. In California, ISO (now part of Verisk Analytics) provides advisory rates, policy forms, and loss data that carriers use as a foundation for their own pricing and underwriting decisions. This data-sharing is specifically authorized under the McCarran-Ferguson exemption and state insurance regulation.

But the line between permissible data-sharing and impermissible coordination becomes blurred when the shared data and industry forums are used to develop common market strategies. If trade associations facilitate discussions about market viability, risk appetite, and withdrawal timing — even informally — those conversations could provide the foundation for antitrust scrutiny that goes beyond mere parallel conduct. Consumer advocacy organizations have raised this concern in public comments and regulatory filings, arguing that the industry’s institutional infrastructure makes coordinated action both possible and difficult to detect.

The Market Pressure Theory

Perhaps the most consequential antitrust theory is not about explicit agreements but about strategic market pressure. Consumer Watchdog and other advocacy organizations have argued that the coordinated withdrawal pattern was designed to create a regulatory crisis that would force the state to grant concessions the industry had been unable to obtain through normal regulatory channels. The theory runs as follows:

1. Carriers spent years seeking permission to use catastrophe models for rate-setting and to pass reinsurance costs through to policyholders — changes that would result in significantly higher premiums.
2. Proposition 103 and the CDI’s prior-approval framework constrained the industry’s ability to implement these changes unilaterally.
3. By withdrawing from the market en masse, carriers created a crisis — hundreds of thousands of homeowners unable to obtain insurance, a FAIR Plan overwhelmed beyond its design capacity, and political pressure on regulators to act.
4. The CDI, under Commissioner Ricardo Lara, responded by proposing the Sustainable Insurance Strategy, which included many of the regulatory changes the industry had been seeking: catastrophe model usage, reinsurance cost pass-through, and streamlined rate approval.
5. The carriers, having achieved the regulatory changes, began indicating willingness to re-enter the market — contingent on the new rules being implemented.

Whether this pattern constitutes actionable antitrust conduct depends on whether the withdrawals were truly independent or whether there was coordination, even tacit coordination, in the strategy. If each carrier independently decided to use market withdrawal as leverage for regulatory change, the conduct is aggressive but likely legal. If carriers communicated about the strategy through any channel — trade associations, reinsurance intermediaries, informal executive discussions — the analysis changes fundamentally.

State Antitrust Authority

While McCarran-Ferguson shields insurers from federalantitrust law to a significant degree, state antitrust law operates independently. California’s Cartwright Act (Cal. Bus. & Prof. Code §§ 16700–16770) prohibits trusts and conspiracies in restraint of trade. California’s Unfair Practices Act (Cal. Bus. & Prof. Code §§ 17000–17101) prohibits unfair competition, including practices that restrain trade.

The California Insurance Code also contains its own anticompetitive provisions. Insurance Code section 1861.03 requires that insurance rates not be “excessive, inadequate, or unfairly discriminatory.” Insurance Code section 790.06 prohibits unfair methods of competition in the business of insurance. The California Attorney General has independent authority to investigate and prosecute anticompetitive conduct in the insurance industry under both the Cartwright Act and the Insurance Code.

In February 2025, a coalition of consumer groups formally requested that the California Attorney General investigate the pattern of insurer withdrawals for potential antitrust violations. As of this writing, the Attorney General’s office has not publicly disclosed whether a formal investigation has been opened, but the request itself reflects the seriousness with which consumer advocates view the withdrawal pattern.

What Policyholders and Their Advocates Should Know

The antitrust dimensions of the California insurance crisis are complex and unlikely to produce immediate relief for individual policyholders. But understanding the framework matters for several reasons:

• Regulatory advocacy. Policyholders and consumer groups who participate in CDI rate proceedings and regulatory hearings can raise the antitrust implications of coordinated withdrawal. If the regulatory concessions being sought by the industry were extracted through anticompetitive pressure, that context is relevant to whether and how those concessions should be implemented.
• Legislative action. California lawmakers have the authority to strengthen state antitrust enforcement in the insurance sector, to increase transparency requirements for market withdrawal decisions, and to impose conditions on carriers that wish to re-enter the market after withdrawing. Policyholders should engage with their representatives on these issues.
• Class action potential.If evidence of actual coordination emerges, policyholders who were non-renewed or forced into the FAIR Plan could potentially pursue class action antitrust claims under state law. The damages in such a case would be substantial — the premium differential between voluntary market coverage and FAIR Plan coverage, multiplied across hundreds of thousands of policyholders.
• CDI complaints. Policyholders who believe their non-renewal was part of a coordinated pattern rather than an individualized underwriting decision should file complaints with the California Department of Insurance. See how to file a CDI complaint. The volume of complaints helps the CDI and the Attorney General assess the scope of the problem.
• Document everything.If a carrier non-renews a policy, the policyholder should preserve the non-renewal notice, any communications explaining the decision, the premium history, and the loss history. If the carrier’s stated reason for non-renewal does not align with the policyholder’s actual risk profile — for example, non-renewing a policyholder with no claims history in a low-risk area — that disconnect is potentially relevant to both regulatory and antitrust analysis.

Sources & Further Reading

• Consumer Watchdog— Consumer Watchdog has published extensive analysis of the California insurance crisis, including detailed reports on the pattern of insurer withdrawals and their advocacy for antitrust investigation. Search for their publications on California insurance market withdrawal and Proposition 103 enforcement.
• Consumer Federation of America— The Consumer Federation has analyzed the national implications of coordinated insurer withdrawals and the strain on state-run residual market plans. Their publications on insurance market competition provide national context for the California situation.
• Hartford Fire Insurance Co. v. California(1993) 509 U.S. 764 — The leading Supreme Court decision on the McCarran-Ferguson boycott exception, addressing when coordinated insurer conduct forfeits the antitrust exemption.
• California Department of Insurance— The CDI publishes data on FAIR Plan enrollment, voluntary market policy counts, and non-renewal rates. The Department’s statistical data and regulatory filings document the scope of the market contraction.
• American Property Casualty Insurance Association (APCIA)— The industry trade association’s public statements and regulatory filings articulate the carriers’ position on why market withdrawals were necessary. These materials are relevant to understanding the industry’s stated justifications.