Insurance Carriers & Related Activities
NAICS 524: US insurance carriers, reinsurers, agents, and brokers. Premiums, regulation, and market trends.
Industry at a Glance
Sector-wide aggregates across all businesses classified under NAICS 524 (2017 classification frame). For specific sub-industries within this sector, see the individual reports below.
Industry Overview
NAICS 524 covers firms that underwrite insurance policies, reinsure risk, and distribute coverage as agents or brokers. The subsector's top carriers — State Farm, UnitedHealth Group, Berkshire Hathaway's GEICO and General Re, and Allstate — span property-casualty, life, and health lines. Independent agencies and national brokerages like Marsh McLennan and Aon distribute policies across all segments and earn commission-based revenue.
Direct premiums written across all lines exceeded $1.4 trillion in the US in 2022 according to the NAIC, with property-casualty representing roughly half and health and life splitting the remainder. Underwriting profitability in P&C has deteriorated: the industry combined ratio exceeded 102% in 2022 and 2023, driven by catastrophe losses concentrated in Florida, Louisiana, Texas, and California wildfire corridors. State Farm's decision to pause new homeowners' policies in California in mid-2023, followed by Allstate's similar pullback, highlighted the repricing crisis in high-catastrophe states.
Regulation is state-based. Each state's Department of Insurance oversees rate filings, solvency requirements, and market conduct, coordinated nationally through the NAIC. The McCarran-Ferguson Act preserves this state-level regime, though federal bodies like CMS administer Medicare Advantage and ACA marketplace rules that directly affect health carriers. The NAIC's adoption of updated risk-based capital (RBC) standards and its Insurance Data Security Model Law (adopted by 24 states as of early 2024) shape both capital adequacy and cyber-risk management requirements for carriers.
Who Uses These Reports
Trusted by professionals who need verified federal data to make decisions
Investors & PE Firms
Size markets, validate deal theses, and benchmark targets with verified federal data before committing capital
Consultants & Advisors
Deliver data-backed recommendations to clients with sourced and cited industry metrics — Census, BLS, and FRED
Founders & Operators
Validate market entry, benchmark against industry averages, and present credible data to investors and boards
Corporate Strategy Teams
Support expansion planning, M&A due diligence, and executive reporting with NAICS-classified industry data
See what's inside a report
Market sizing, workforce analysis, competitive landscape, regulatory environment — all sourced from Census, BLS, FRED, and SEC EDGAR.
Industry Trends
Carrier withdrawals from high-catastrophe states — State Farm and Allstate pausing new California homeowners' policies in 2023, and multiple insurers exiting Florida personal lines — are forcing state-run residual markets like Citizens Property Insurance to absorb risk that private carriers refuse to write.
The NAIC's Insurance Data Security Model Law, adopted by 24 states as of early 2024, mandates cybersecurity programs, incident-response plans, and breach-notification protocols for all licensed insurers, creating a compliance layer that does not exist in banking or securities regulation.
Parametric insurance products — triggered by measurable events like wind speed thresholds or earthquake magnitude rather than traditional claims adjustment — are expanding in commercial lines, with Swiss Re, Nephila Capital, and domestic MGAs offering parametric crop and catastrophe coverage.
Private equity ownership of life and annuity blocks continues expanding, with firms like Apollo (through Athene) and KKR (through Global Atlantic) acquiring over $400 billion in insurance liabilities, shifting investment strategy toward higher-yielding alternative assets.
Embedded insurance distribution — coverage sold at the point of purchase through platforms like Tesla's auto-insurance program and Amazon's shipping protection — is bypassing the traditional agent-broker channel and growing fastest in auto, travel, and product-warranty lines.
Available Reports
2 industry reports available for purchase under Insurance Carriers & Related Activities.
Specialty Reports Available on Request
10 specialty industriesavailable on request▾
Industry Groups
Browse deeper into the NAICS hierarchy.
Frequently Asked Questions
What is NAICS 524? ▾
Why are insurers leaving California and Florida? ▾
How does state-level regulation work for insurance carriers? ▾
What is parametric insurance and why is it growing in this subsector? ▾
How is private equity reshaping the life insurance segment? ▾
Related Guides
US health & medical insurance carriers employ 636K across 6.1K establishments. Premium growth, Medicare Advantage, consolidation, and the 2026 outlook.
Insurance agency net profit margin averages 14.3% (IRS SOI, 2022). What drives it, how margins vary by agency size and model, and sector comparison.
What is an insurance agency worth? Under $1M of EBITDA agencies trade at 5x to 7x, not the 12x in the headlines. Average agency revenue $1.44M (Census EC 2022).
US commercial banking employs 1.63M across 83K establishments. Net interest margins, branch consolidation, fintech disruption, and the 2026 outlook.
US industry pay runs from $445,088 to $16,409 a year, a 27x spread. Which industries sit at each end of the federal wage record, and why the gap is structural.
Questions about how we source industry data? See our data sources FAQ.
Don't see your industry?
We can generate a report for any NAICS-classified industry in the US. Professional PDF delivered in 48 hours.