How business insurance is regulated in the U.S.

Business insurance in the United States is regulated mainly by the states, not by the federal government. That arrangement comes from the McCarran-Ferguson Act of 1945 (15 U.S.C. 1011-1015), which declares that states should regulate "the business of insurance" and that a federal statute does not override a state insurance law unless the federal statute specifically relates to insurance. Each state has its own insurance code, its own commissioner and its own rules on licensing, solvency, forms and rates, so the same policy can be treated differently in Texas, California and New York.

The three layers

Think of the system as three layers that overlap but rarely collide.

1. The states do the day-to-day work. The insurance department in each state licenses insurers and producers, examines company finances, reviews or monitors forms and rates, polices claim handling and takes consumer complaints. Details are in state insurance departments and what they can do for businesses.
2. The NAIC coordinates. The National Association of Insurance Commissioners is a standard-setting body made up of the chief insurance regulators of the 50 states, the District of Columbia and five U.S. territories (56 jurisdictions, per the NAIC's own description). It writes model laws, runs the accreditation program, operates the electronic filing system SERFF and publishes the financial and market data regulators share. Its models bind no one until a legislature adopts them. See The NAIC: what it does and why it matters.
3. Congress acts at the edges. Federal law reaches insurance through specific statutes: the Nonadmitted and Reinsurance Reform Act, the Terrorism Risk Insurance Act, ERISA for employee benefit plans, the Affordable Care Act for health coverage, the National Flood Insurance Act, and the Dodd-Frank Act's creation of the Federal Insurance Office. See The Federal Insurance Office and federal reach.

What McCarran-Ferguson actually does

The Act has two practical effects. First, section 1012(b) lets state insurance law stand against a general federal statute that does not mention insurance. A state rule on how a claim must be paid will usually prevail over a general federal law that would otherwise displace it, which is why courts keep asking whether a given federal law "specifically relates to the business of insurance."

Second, section 1013 gives insurers a limited exemption from federal antitrust law for the business of insurance, but only to the extent the activity is regulated by state law, and never for agreements to boycott, coerce or intimidate. That is why insurers and rating bureaus can pool loss data and file shared loss costs. It is a qualified exemption, not a blanket one. You can read the text at Cornell's Legal Information Institute.

What state regulators control

State law decides most of what a business buyer experiences:

• Who may sell. Insurers must be licensed (admitted) in the state, or be eligible as a surplus lines insurer. Agents and brokers need producer licenses (producer licensing for agents and brokers).
• Whether the insurer stays solvent. Domestic regulators examine insurers, require annual statutory financial statements and apply risk-based capital triggers. If a company fails, the guaranty fund system steps in for admitted carriers (what happens when an insurer fails: guaranty funds and business policies).
• What the policy may say and cost. States review policy forms, and for many lines rates, through filing systems explained in commercial rate filing: prior approval, file-and-use and deregulation. Workers' compensation is the most tightly managed line; the state sets benefits, mandates coverage in most states (workers' comp requirements by state: who must carry it) and either approves rates or monitors them.
• How claims and cancellations are handled. Unfair claims practices acts, prompt-payment rules and cancellation and nonrenewal notice statutes are state law (policy cancellation and nonrenewal: notice periods and your rights).
• Who has to carry insurance. Required coverages (workers' compensation, commercial auto minimums, bonds, professional coverage) are set by states, cities and contracts. See is business insurance required by law?.

Admitted and non-admitted: two regulatory tracks

The biggest structural split for a business buyer is between the admitted and surplus lines markets.

Since the Nonadmitted and Reinsurance Reform Act of 2010 (NRRA, Title V, Subtitle B of the Dodd-Frank Act, 15 U.S.C. 8201 and following), only the insured's home state, the state of its principal place of business, may regulate a nonadmitted placement and collect the premium tax on it. Details on the tax mechanics are in surplus lines taxes, stamping fees and diligent search, and the market itself in admitted vs non-admitted insurers: what the difference means. Risk retention groups sit on a third track: the federal Liability Risk Retention Act lets a group chartered in one state write liability coverage in all states, with its home state as primary regulator (risk retention group).

Where Washington reaches in

• NRRA. Home-state control of surplus lines taxes and regulation, uniform eligibility standards for nonadmitted insurers, and the rule that a ceding insurer gets reinsurance credit if its home state recognizes it (15 U.S.C. 8221-8222).
• TRIA. A federal reinsurance backstop for certified terrorism losses; insurers must make the coverage available (Terrorism insurance and TRIA: how the federal backstop works).
• FIO. An office in Treasury that monitors the sector and represents the U.S. internationally. It does not regulate individual insurers. See The Federal Insurance Office and federal reach.
• Employee benefits. ERISA preempts many state laws as they relate to employee benefit plans, while saving state laws that regulate insurance. That is why a fully insured health plan is subject to state mandates and a self-funded plan generally is not.

A hypothetical: one risk, three regulators

Say a 40-employee landscaping contractor based in Texas has crews that occasionally work in Oklahoma. The general liability policy is issued by an admitted insurer; Texas reviews that insurer's solvency and the filed forms. Workers' compensation follows Texas rules plus an other-states endorsement for the Oklahoma job sites (other states coverage). The umbrella is placed with a surplus lines insurer because admitted capacity is thin; Texas, as home state, governs the broker, the tax and the filing, and Oklahoma has no separate tax claim. If the owner has a dispute over the umbrella, the Texas Department of Insurance can look into broker conduct, but its leverage over a surplus lines carrier's forms and rates is limited. To find the rules for your own state, use the workers' comp and benefits requirements by state and the state guides, such as Texas, California and New York.

What this means when you buy

• Ask whether each policy is written by an admitted or non-admitted insurer. It tells you which regulator, which guaranty fund and which tax apply.
• Check the insurer's financial strength independently (AM Best ratings explained for business buyers). Regulation sets a floor, not a quality ranking.
• Keep your state insurance department's complaint process in mind (how to complain to your state insurance department), but remember it handles conduct and compliance, not legal interpretation of coverage.
• Expect regulation to keep changing at the state level. Recent examples include state adoption of the NAIC's model bulletin on artificial intelligence (AI regulation in insurance: the NAIC bulletin and state rules).

Key takeaways

• States, not Washington, are the primary regulators of business insurance, by design of the McCarran-Ferguson Act (15 U.S.C. 1011-1015).
• The NAIC coordinates and writes models, but its models matter only when a state adopts them.
• Federal law reaches in through targeted statutes: the NRRA for surplus lines, TRIA for terrorism, ERISA for benefit plans and the Federal Insurance Office for monitoring and international work.
• Whether a policy is admitted or surplus lines decides which rules, taxes and guaranty protection apply.
• Rules vary by state; verify the ones that apply to your home state before relying on any summary.