In this post, I briefly describe the insurance regulations within the United States, highlighting how regulation can act as a first-order force in shaping the incentives and decisions of insurance companies. I also highlight the features that are unique to P&C vs. life insurers. I’ve benefited from discussions with Manav Chaudhary.

Introduction

There are two primary dimensions along which insurance regulations can be analyzed:

• U.S. vs. Europe: In the U.S., insurance is primarily regulated at the state level, with each state having its own set of laws and oversight bodies, leading to a decentralized system. In contrast, the European Union has implemented a harmonized regulatory framework, Solvency II, which sets capital requirements and risk management standards for insurers across the EU.
• P&C vs. Life: P&C insurers typically face more product-specific regulations due to the diverse nature of risks they cover, while life insurers are subject to regulations focused on asset-liability management and long-term solvency considerations, given the nature of their products and obligations.

In this post, I focus on the U.S. insurance regulation for both P&C and life insurers.

Key Features of US Insurance Regulation

State-Level Regulation

The regulation of insurance companies in the United States is primarily a state-level responsibility, with each state having its own set of laws and oversight bodies.

• This decentralized system is due the 1868 Supreme Court case of Paul v. Virginia, which ruled that the issuance of an insurance policy was not considered interstate commerce, and thus not subject to federal regulation. [1]

In the absence of a federal regulatory framework, the National Association of Insurance Commissioners (NAIC) was established in 1871 to coordinate the efforts of state regulators and promote uniformity in insurance regulations across the country.

• NAIC primarily serves as a standard-setting and regulatory support organization, developing model laws and regulations that individual states can adopt or use as a basis for their own laws. However, it does not have direct regulatory authority over insurance companies, as that power remains with the individual state insurance departments.

Despite the presence of the NAIC, there exists significant differences in insurance regulations across U.S. states:

1. Capital and reserve requirements: The states impose two types of capital requirements on insurers. First, each state has its own fixed minimum requirement. And second, insurers are also subject to uniform RBC requirements based on a complex formula developed by the NAIC. Note that the fixed minimum capital standards were present prior to the development of the RBC (Grace, Harrington, and Klein, 1998)
2. Rate regulation: Some states have a more stringent rate regulation process, requiring insurers to obtain approval for rate changes, while others have a more open competition approach (Oh, Sen, and Tenekedjieva, 2024)

Identifying Financially Troubled Insurers

The core components of the US regulatory oversight include the Insurance Regulatory Information System (IRIS) and the Financial Analysis Solvency Tools (FAST) framework. Both of these are essentially “early warning” systems for financially troubled insurers.

1. IRIS employs twelve to thirteen financial ratios, varying by insurer, and publishes its results. Set norms guide each ratio, deviations from which may lead to regulatory examination.
2. The FAST system, developed due to IRIS’s shortcomings, includes IRIS but centers on a “scoring system” that evaluates around twenty financial ratios, assigning points to different outcomes. These cumulative scores, confidential and shared with regulators, prioritize insurers for further analysis.

There are two categories of regulatory actions with respect to troubled companies:

1. Actions to prevent the insurer from becoming insolvent (e.g. hearings, conferences, corrective plans, restrictions on activities, notices of impairment, cease and desist orders, and supervision)
2. Deliquency proceedings against an insurer (e.g. conservation, seizure of assets, rehabilitation, liquidation, and dissolution)
   • An insurer’s liquidation can then trigger the involvement of insurance guaranty associations (GAs). Each state has separate guaranty associations for property-casualty and life-health insurers, and these associations cover a portion of the insolvent insurer’s unpaid claims obligations.

Comparison to Insurance Regulation in the European Union

In the European Union (EU), Solvency II codified and harmonized insurance regulation in the US as of 2009. It has its roots in Solvency I, which is a term used to describe changes to the insurer solvency regime made in the EU in 2002.

1. Approach: In general, the US regulation is primarily rules-based, whereas the European one is primarily principles-based (Vaughan, 2009).
2. Supervisory Body: The International Association of Insurance Supervisors (IAIS) is the NAIC comparable in the European Union.
3. Capital Requirements: EU insurance regulation relies on two ratios: Minimum Capital Requirements (MCR) and Solvency Capital Requirements (SCR), i.e. the amount of economic capital required to be held to limit the probability of ruin to 0.5%.

Property & Casualty vs. Life Insurers

I next summarize the main operational and regulatory differences between P&C and life insurers, especially in the context of US.

Operational Differences

1. Integration across divisions: Life insurers generally have a more compartmentalized operations within a firm. In P&C, the pricing actuaries and the reserving actuaries work closely together.
2. Major Causes for Insolvency: The major insolvency risk for life insurers stems from mismatches between the duration of their assets and their liabilities. On the other hand, the major insolvency risk for P&C insurers is the underpricing of policies and not setting aside sufficient reserves to cover claims.
3. Product Characteristics: Life insurance products often involve complex features like cash value accumulation, variable rates, and different types of annuities, requiring specialized management and actuarial expertise. P&C insurance products are generally more straightforward, focusing on covering specific risks over a defined period.
4. Investment Strategy: Due to the long-term nature of their liabilities, life insurers typically invest in longer-duration assets, including bonds and real estate, to match their liability profiles. P&C insurers, facing more variable claim patterns, often require more liquidity in their investments, leading to a different asset allocation strategy that may include a larger proportion of short-term and liquid assets.

Regulatory Differences

The following are the key differences in the regulation of P&C insurers vs. life insurers based on the NAIC regulatory framework:

1. Risk-Based Capital (RBC): The RBC formula for P&C insurers focuses more on underwriting risk, reserve risk, and asset risk. The RBC formula for life insurers places greater emphasis on asset risk, interest rate risk, and mortality risk. [2]
2. Valuation of Liabilities: P&C insurers use more short-term loss reserve estimates and discounting techniques. Life insurers must value their long-term liabilities using complex actuarial models and mortality tables. [3]
3. Investments: P&C insurers generally have fewer restrictions on their investment portfolios. On the other hand, life insurers face stricter investment regulations, as their investments must support long-term obligations to policyholders.
4. Historical Cost Accounting (HCA): When an asset held by insurance companies is downgraded from investment to speculative grades, the Statutory Accounting Principles (SAP) state that P&C insurers have to immediately recognize the asset value as the lower of the book value (based on HCA) or the market price (or model price, in case no market price is available). On the other hand, life insurers may continue to hold the downgraded asset under HCA except in the extreme case when it is classified as ‘in or near default’.

Timeline of Major Regulatory Changes

Regulation applying to life insurers are denoted in blue and P&C in red. Regulation that applies to both are in violet.

1. Risk-Based Capital (RBC) — 1994: Since 1994, the NAIC has used a risk-based capital system to regulate insurance companies. This system imposes capital requirements and computes a solvency metric, the risk-based capital (RBC) ratio, for each insurer at the end of each year
2. Actuarial Opinion — 1990s: In the early 1990s, the NAIC implemented requirements for P&C insurers to obtain an annual actuarial opinion on the reasonableness of their loss reserves.
3. Capital Relief for MBS — 2009: Since 2009 (2010), capital requirements for RMBS (CMBS) are no longer based on ratings but instead relies on proprietary risk measurement from PIMCO (for RMBS) and BlackRock (for CMBS). Subsequently, risk based capital requirements were also based on expected loss measure from these firms. (Becker, Opp, and Saidi, 2021)
4. Principles-Based Reserving (PBR) — 2017: PBR replaced the traditional formulaic approach to calculating life insurance reserves by combining company-specific assumptions with prescribed rule-based requirements. (See this blog post for an explanation of why this was a huge deal for insurers)
5. Introduction of RCat in RBC Calculation — 2017: RCat is an additional capital requirement item added on top of the existing risk-based capital items and has been officially implemented starting in 2017. (Eastman and Kim, 2024)
6. Corporate Governance Annual Disclosure (CGAD) — 2020: The CGAD requires each insurer (no exemptions) to implement and confirm in an annual disclosure its corporate governance structure, policies, and practices. This was intended so that regulators would understand the governance framework for insurers.

Appendix

1. State-level regulation and Paul v. Virginia

This decentralized system can be traced back to the 1868 Supreme Court case of Paul v. Virginia, which ruled that the issuance of an insurance policy was not considered interstate commerce, and thus not subject to federal regulation. Later, in United States v. South-Eastern Underwriters Association (1944), the court held that the insurance business affected interstate commerce, but by then state regulatory systems were well entrenched.

2. The risk-based capital (RBC) ratio

The RBC ratio is the primary measure of capital adequacy and financial health; it is calculated as the ratio of statutory (equity) capital to required regulatory capital or RBC. This is very similar to the way capital ratios in the banking industry are measured.

3. Life versus P&C valuation

Life valuation is a lot more technical than P&C reserving. Life products are much longer in duration, and are generally more complicated and therefore requires heavy stochastic modelling. On the other hand, P&C reserving is a lot simpler. Policies are grouped together, and experience from past years is analysed in order to come up with a prediction of what will happen In future years. In general, methods used for P&C reserving are surprisingly simple.