Insurance Industry Overview: How Insurers Create Value

Introduction

The insurance industry is one of the three pillars of the financial services landscape that FIG investment bankers cover, alongside banking and asset management. In the United States, approximately 4,700 insurance companies generated $1.7 trillion in net premiums written in 2024, with property/casualty (P&C) insurers accounting for 53.1% ($932.5 billion) and life/annuity insurers accounting for 46.9% ($822.6 billion). Globally, the insurance industry collected over $7 trillion in premiums, making it one of the largest financial sectors by revenue.

Understanding how insurers create value is foundational for FIG professionals. Unlike banks (which earn the spread between lending rates and funding costs) or asset managers (which earn fees on AUM), insurers operate a dual-engine business model: they generate underwriting profit by pricing risk correctly and investment income by deploying the capital held between premium collection and claims payment. The interaction between these two engines, and their sensitivity to market cycles, is what makes insurance analysis distinct from other FIG subsectors.

The global insurance market reflects significant regional variation in size, growth, and structure. In 2024, global premiums reached approximately €7.0 trillion, with North America generating the largest share. P&C premiums in North America grew by 8.2% in 2024, while Western Europe grew by 6.0% and Asia by 4.0%. Life insurance saw even stronger momentum globally, with premiums up 10.4%, driven by North America's annuity boom (+14.4%) and surging demand in China (+15.4%). Asia is projected to generate more than half of global premium growth over the next decade, reflecting the industry's shifting center of gravity toward emerging markets. For FIG bankers at bulge bracket firms, this global footprint means that insurance coverage increasingly requires cross-border expertise: European insurers like Allianz, AXA, and Zurich operate globally, and the largest reinsurers (Munich Re, Swiss Re, Hannover Re) are European-headquartered institutions that underwrite risk worldwide.

The Underwriting Engine

Insurance companies collect premiums from policyholders in exchange for assuming risk. The underwriting engine generates profit when the premiums collected exceed the sum of claims paid and operating expenses. This relationship is captured by the combined ratio:

A combined ratio below 100% means the insurer is earning an underwriting profit (collecting more in premiums than it pays in claims and expenses). A combined ratio above 100% means an underwriting loss. The P&C industry combined ratio has historically averaged approximately 96-102%, meaning most years the industry either breaks even or earns a modest underwriting profit.

The underwriting engine is fundamentally different across the two major insurance segments:

Property and Casualty (P&C) insurance covers tangible risks: auto accidents, property damage, natural disasters, liability lawsuits. P&C policies are typically one-year contracts, meaning the insurer can reprice annually. This repricing ability allows P&C insurers to respond to changing loss trends relatively quickly, but it also creates the underwriting cycle (periods of hardening and softening markets) that drives earnings volatility.

Life and annuity insurance covers mortality and longevity risks: life insurance pays on death, annuities pay on survival. Life policies are long-duration contracts (often 20-30 years or longer), meaning the insurer commits to pricing for decades. The profitability of a life insurer depends heavily on the accuracy of its mortality assumptions and, critically, on the investment returns earned on the reserves held over those decades.

Underwriting Profit

The profit an insurance company earns from its core risk-transfer business, calculated as net premiums earned minus incurred losses, loss adjustment expenses, and underwriting expenses (commissions, policy acquisition costs, and general administrative expenses). Underwriting profit is distinct from investment income; together, they constitute total operating income for an insurer. A company that consistently earns underwriting profit is collecting premiums that more than compensate for the risks it assumes, demonstrating pricing discipline and risk selection skill. Underwriting profit is measured by the combined ratio: a ratio below 100% indicates underwriting profit, while a ratio above 100% indicates an underwriting loss. For P&C insurers, the industry has achieved sub-100% combined ratios (underwriting profit) in approximately 60% of years since 2000.

The Investment Engine

Between the time an insurer collects a premium and the time it pays a claim, the premium sits on the insurer's balance sheet as an investable asset. This pool of money is called float, and the investment income it generates is the second engine of insurer profitability.

The investment portfolio composition varies significantly by insurer type:

Life insurers hold significantly larger investment portfolios relative to premiums because their liabilities extend decades into the future. A life insurer that sells a whole life policy to a 35-year-old may not pay the death benefit for 40+ years, earning investment income on the reserves throughout that period. This is why investment portfolio management is central to life insurance profitability, and why life insurer valuations are heavily influenced by interest rate environments.

P&C insurers hold shorter-duration portfolios because their claims are typically paid within 1-3 years. However, for "long-tail" lines (such as workers' compensation, medical malpractice, and general liability), reserves may be held for 5-10 years, allowing meaningful investment income accumulation.

The insurance industry operates through a three-layer value chain, and each layer represents a distinct business model, risk profile, and valuation approach for FIG professionals.

Carriers (Risk-Bearing Entities)

Carriers are the companies that actually assume risk and hold reserves against potential claims. They collect premiums, establish reserves, invest the float, and pay claims. Carriers require significant capital to support their underwriting (measured by Risk-Based Capital ratios in the US and Solvency II capital ratios in Europe) and are valued primarily on P/E, price-to-book, and (for life insurers) embedded value multiples.

The US carrier landscape is concentrated at the top but fragmented below:

Insurance Float

The total amount of money an insurer holds between collecting premiums and paying claims. Float represents a form of leverage: the insurer can invest the float and earn returns on money that belongs to policyholders (in the sense that it will eventually be paid out as claims). When an insurer earns an underwriting profit (combined ratio below 100%), the float is effectively free capital, as the insurer is being paid to hold it. Warren Buffett has described float as better than free money because "policyholders pay us to hold their money." Berkshire Hathaway's insurance float exceeded $173 billion in 2024, and the investment returns on this float have been central to Berkshire's long-term value creation. Float grows as premiums grow, making it a self-reinforcing advantage for profitable, growing insurers.

Brokers and Distributors

Insurance brokers are intermediaries that place risk with carriers on behalf of policyholders. They do not assume risk or hold reserves; instead, they earn commissions and fees for distributing insurance products. This capital-light, fee-based model generates higher returns on equity and more predictable revenue streams than carriers, which is why brokers command premium valuations (12-18x EBITDA compared to 8-12x for carriers).

The broker consolidation wave has been one of the most active areas of insurance M&A. In 2024-2025, transformative deals reshaped the landscape:

Private equity has been a major driver of broker consolidation, accounting for approximately 72% of all 2024 insurance distribution acquisitions.

Reinsurers

Reinsurers are insurance companies that insure other insurance companies. When a primary carrier writes a policy with risk it does not want to retain entirely, it cedes a portion of the premium and risk to a reinsurer. Reinsurers provide capacity, capital relief, and catastrophe protection to the primary market. Global reinsurance leaders include Munich Re, Swiss Re, Hannover Re, and Berkshire Hathaway, and the market is headquartered in Bermuda and European financial centers.

Insurance is the second-largest source of FIG deal flow after banking, and the dynamics are distinct. Insurance M&A reached approximately $104 billion in aggregate deal value in 2025, up from $88 billion in 2024.

The major transaction categories include:

Broker consolidation is the highest-volume deal type, driven by PE-backed platforms acquiring smaller agencies and brokerages to build scale. The fragmented distribution landscape (thousands of independent agencies) creates a long runway for roll-up strategies.

Life insurance block transactions involve the sale of closed blocks of life insurance or annuity policies from primary carriers to specialized acquirers (often PE-backed platforms like Athene, Global Atlantic, or Resolution Life). The acquirer takes on the liability and the investment portfolio, seeking to earn higher investment returns through active portfolio management.

P&C carrier M&A tends to be cyclical, accelerating after periods of underwriting profitability (when carriers have excess capital) and during hard markets (when acquired books of business are repricing favorably).

[MGA/MGU acquisitions](/guides/fig-investment-banking/managing-general-agents-pe-favorite) have surged as PE firms recognize managing general agents as capital-light platforms with underwriting authority, combining the economics of a broker with the underwriting expertise of a carrier.

Insurance regulation in the US is unique among financial services: it is primarily state-based rather than federal. Each state has its own insurance department and commissioner, and insurers must be licensed in every state where they operate. The National Association of Insurance Commissioners (NAIC) coordinates regulatory standards across states but does not have federal regulatory authority.

The key regulatory capital metric for US insurers is Risk-Based Capital (RBC), which measures an insurer's surplus relative to the risks it assumes (underwriting risk, asset risk, credit risk, and off-balance-sheet risk). Insurers must maintain RBC ratios above regulatory minimums (typically 200%+ of the Authorized Control Level) to avoid supervisory intervention. This framework differs fundamentally from banking regulation (which is federal, centralized, and structured around Basel capital standards) and creates distinct M&A considerations: regulatory approval for insurance transactions involves state-level reviews, and multi-state insurers may require approval from multiple commissioners.

For FIG bankers, understanding the regulatory approval process, RBC and Solvency II frameworks, and the state-based structure is essential for advising on insurance transactions.

The European insurance regulatory framework operates under a fundamentally different philosophy. Solvency II, implemented across the EU since 2016, is a principles-based, risk-sensitive regime that requires approximately twice the capital of the US RBC framework for a representative P&C insurer. European insurers maintain aggregate solvency ratios well above the minimum: in 2024, the main European insurance groups held aggregate own funds of €493 billion against a Solvency Capital Requirement of €237 billion, yielding a 208% aggregate solvency ratio (down from 223% in 2023 but still more than double the regulatory floor). The UK, post-Brexit, has adapted Solvency II through its own reforms, and Lloyd's of London operates under PRA supervision with Lloyd's-specific Solvency II requirements. For FIG bankers advising on cross-border insurance transactions, the capital regime differences between US RBC and European Solvency II create both friction (different capital calculations, different statutory reporting) and opportunity (regulatory arbitrage in reinsurance structures, particularly through Bermuda vehicles that bridge the two regimes).

Insurance is a sector where deep specialization pays dividends. The interaction between underwriting and investment, the regulatory complexity of state-based oversight and cross-border capital regimes, and the diversity of business models across carriers, brokers, reinsurers, and specialty platforms create analytical challenges that generalist coverage bankers rarely encounter. For FIG professionals, insurance advisory represents a durable and growing revenue source: the structural forces driving consolidation (broker roll-ups, life block transactions, MGA acquisitions, carrier scale-seeking) show no signs of slowing, and the $100 billion+ annual deal flow provides consistent opportunities across market cycles.