Study guide
3.1 Types of Insurers
Associate in Insurance AINS
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1 Introduction & Exam Overview
1.1 Current Exam Facts 1.2 Designation Path: Core, Concentration, Elective, Ethics 1.3 How to Study for AINS and Use This Guide
2 AINS 101 Assignment 1: Why Do We Have Insurance?
2.1 Risk, Peril, Hazard, and Loss Exposures 2.2 The Risk Management Process 2.3 Insurable Risk, Pooling, and the Law of Large Numbers
3 AINS 101 Assignment 2: How Do Insurers Succeed?
3.1 Types of Insurers 3.2 Premiums, Loss Ratio, Expense Ratio, and Combined Ratio 3.3 Reinsurance, Capital, and Solvency
4 AINS 101 Assignment 3: How Does Underwriting Work?
4.1 Purpose and Steps of Underwriting 4.2 Adverse Selection, Hazards, and Underwriting Authority 4.3 Ratemaking and Premium Components
5 AINS 101 Assignment 4: How Do Insurers Handle Claims?
5.1 From First Notice of Loss to Settlement 5.2 First-Party vs Third-Party and Coverage Determination 5.3 Good Faith, Subrogation, and Salvage
6 AINS 101 Assignment 5: How Do Insurers Reach Customers?
6.1 Independent Agents, Exclusive Agents, and Brokers 6.2 Direct Writers, MGAs, and Digital Distribution 6.3 Producer Compensation and Customer-Facing Roles
7 AINS 101 Assignment 6: What Goes Into an Insurance Policy?
7.1 Declarations, Insuring Agreement, Conditions, Exclusions 7.2 Definitions, Endorsements, and Who Is an Insured 7.3 Legal Principles of Insurance Contracts
8 AINS 101: How Insurers Operate in a Regulated Market
8.1 State Regulation and the McCarran-Ferguson Act 8.2 NAIC, Rate Regulation, and Solvency Oversight 8.3 Producer Licensing, Unfair Practices, and Residual Markets
9 AINS 102 Assignment 1: Why Do People Need Insurance?
9.1 Personal Loss Exposures 9.2 Personal Risk Management and Why People Buy 9.3 Personal Lines Landscape: Auto, Home, Liability, Life, Health
10 AINS 102 Assignment 2: What’s in a Personal Auto Policy?
10.1 PAP Eligible Vehicles, Insureds, and Policy Structure 10.2 Part A Liability and Part B Medical Payments 10.3 Part C UM/UIM and Part D Damage to Your Auto 10.4 PAP Exclusions, Conditions, and Common Endorsements
11 AINS 102 Assignment 3: What’s in a Homeowners’ Policy?
11.1 HO-2, HO-3, HO-4, HO-5, HO-6, and HO-8 Compared 11.2 Section I Property Coverages A–D 11.3 Perils, Exclusions, and Loss Settlement 11.4 Section II Liability (E and F) and HO Conditions
12 AINS 102 Assignment 4: What Other Policies Do People Need?
12.1 Personal Umbrella and Excess Liability 12.2 Scheduled Personal Property, Flood (NFIP), and Earthquake 12.3 Life, Health, and Disability Insurance Basics
13 AINS 102 Assignments 5–6: Evolution and Key Roles
13.1 Telematics, Usage-Based Insurance, and Personal Lines Innovation 13.2 Personal Lines Underwriting and Claims Roles 13.3 Agency, Customer Service, and Cross-Role Collaboration
14 AINS 103 Assignment 1: Why Do Businesses Need Insurance?
14.1 Commercial Property, Liability, Net Income, and Personnel Exposures 14.2 Commercial Risk Management Techniques 14.3 Monoline vs Package and the Commercial Lines Landscape
15 AINS 103 Assignment 2: What’s in a Commercial Property Policy?
15.1 Commercial Package Policy and the BPP Coverage Form 15.2 Basic, Broad, and Special Causes of Loss 15.3 Business Income and Extra Expense
16 AINS 103 Assignment 3: What’s in a Commercial Liability Policy?
16.1 CGL Coverage A — Bodily Injury and Property Damage 16.2 Coverage B Personal/Advertising Injury and Coverage C Medical Payments 16.3 Occurrence vs Claims-Made, Limits, and CGL Exclusions
17 AINS 103 Assignment 4: What Other Policies Do Businesses Need?
17.1 Business Auto Coverage Form 17.2 Workers Compensation and Employers Liability 17.3 Commercial Umbrella, Professional Liability, and Management Liability 17.4 Inland/Ocean Marine, Crime, Surety, Cyber, and Environmental
18 AINS 103 Assignments 5–6: Small Business Coverage and Evolving Roles
18.1 Businessowners Policy (BOP) 18.2 Tailoring Coverage for Small Businesses 18.3 Evolving Commercial Underwriting, Claims, and Producer Roles
19 Ethics 311: Ethical Decision Making in Risk and Insurance
19.1 Ethical Behavior and Professionalism 19.2 Conflicts of Interest and Resolving Ethical Dilemmas 19.3 Institutes Integrity Rules and Ethical Guidelines for Insurance Professionals
20 Electives, Career Path, and Virtual Exam Strategy
20.1 Choosing an AINS Elective 20.2 Related Designations: CPCU, ARM, AIC, API, AU, AIS, AIO, SPPA 20.3 Virtual Exam Strategy, Windows, and Retakes
3.1 Types of Insurers
Key Takeaways Explain This Topic AI
Stock insurers are owned by shareholders and typically issue nonparticipating policies; mutual insurers are owned by policyholders and may pay non-guaranteed policyholder dividends.
A reciprocal exchange is an unincorporated association of subscribers managed by an attorney-in-fact; Lloyd's of London is a marketplace of syndicates, not itself an insurance company.
Captives insure their owner-parents; risk retention groups write liability for members in similar businesses under the federal Liability Risk Retention Act.
Admitted insurers are licensed in the state and are generally backed by a guaranty fund; nonadmitted surplus-lines placements typically are not.
Domestic, foreign, and alien describe where the insurer is formed relative to a given state — not whether it is admitted or surplus-lines.
Last updated: August 2026
Insurers do not all succeed the same way, because they are not all the same kind of company. A producer placing a mid-market manufacturers package, a claims professional explaining why a residual-market auto policy looks different from a standard one, and a risk manager considering a captive all need the same skill: they must know who owns the insurer , how it is licensed , and what that means for capital, dividends, and claim-paying backup . AINS 101 Assignment 2 asks you to apply those distinctions to workplace facts, not merely recite labels.
Proprietary vs Cooperative Insurers
Insurers are often grouped by purpose. Proprietary insurers exist to earn a profit for owners who may not be the policyholders. Cooperative insurers exist primarily to provide insurance to their members; leftover funds may be returned as dividends or used to strengthen surplus.
The classic proprietary form is the stock insurer . Shareholders own it. They elect the board, and residual profits belong to them. Stock companies typically issue nonparticipating policies — the policyholder does not receive a policyholder dividend . That does not make the coverage worse; it means the price is the price, and favorable results go to owners rather than back through the policy. Stock insurers have a capital-market advantage: after a severe catastrophe year they may raise surplus by issuing additional stock, subject to market conditions and regulation.
Mutual insurers are owned by their policyholders . There are no outside shareholders claiming residual earnings. Many mutuals issue participating policies and may pay dividends when results allow. A dividend is a return of premium , not a guaranteed investment yield, and it is not owed just because the company is a mutual. Mutuals generally cannot sell common stock, so they grow surplus from retained earnings, surplus notes, or affiliations. Some large mutuals have demutualized — converting to stock form — when they wanted access to equity capital.
Reciprocal exchanges are unincorporated associations of subscribers who agree to insure one another. An attorney-in-fact (AIF) manages underwriting, claims, and administration under a power of attorney. Attorney-in-fact is a legal role, not a requirement that a courtroom lawyer run the company. Each subscriber is both insured and, in a sense, insurer for the group. Reciprocals appear in personal auto and in some specialty commercial niches. When a commercial insured asks who is on the hook, the honest answer is the subscriber group as managed by the AIF, backed by the reciprocal's surplus and reinsurance — not a traditional shareholder corporation.
Lloyd's of London Is a Market, Not a Company
Lloyd's of London (often shortened to Lloyd's ) is an insurance marketplace , not a single insurer with one balance sheet in the way a U.S. stock company is. Syndicates of underwriters — historically wealthy individual Names , today mostly corporate members — assume risk. A policy placed at Lloyd's is underwritten by one or more syndicates according to the placement. Specialty property, marine, aviation, cyber, and unusual casualty often flow through that market, frequently as surplus lines in the United States.
The application point for a producer is practical. Credit risk and claim-paying ability attach to the syndicate(s) and the Lloyd's chain of security, not to a vague idea that Lloyd's is one admitted U.S. regional company. Coverholder and open-market placements still require the same surplus-lines and documentation discipline as any other nonadmitted placement.
Captives and Risk Retention Groups
A captive insurer is owned by the organization, or group of organizations, it insures. A pure captive insures its parent. A group captive insures several owners with similar operations. Firms form captives to retain predictable layers, buy excess reinsurance more directly, stabilize pricing in a hard market, and tighten claims control. A captive is a real insurance company in its domicile ; it is not a shortcut that ignores underwriting. It may be nonadmitted in the states where the parent operates, so fronting or other licensed paper is often part of the structure.
Risk retention groups (RRGs) exist under the federal Liability Risk Retention Act (LRRA) of 1986. An RRG is owned by its insured members, who must be engaged in similar businesses, and it writes liability coverage for those members. Once licensed in a domicile, an RRG can operate in other states with notice rather than full traditional admission in each one. That federal shortcut is why a medical-malpractice or trucking RRG can follow members across state lines — and why a producer still has to explain that an RRG is not a typical admitted, guaranty-fund-backed stock company.
Government Insurers and Social Insurance
Private insurers decline some socially important exposures. Government insurers and residual markets fill those gaps.
The National Flood Insurance Program (NFIP) is the primary U.S. source of residential flood insurance. Private Write Your Own (WYO) companies may issue and service NFIP policies, but the federal program remains the risk bearer for standard NFIP coverage. Residual auto plans and joint underwriting associations (JUAs) provide liability — and sometimes physical damage — when voluntary markets will not. FAIR plans (Fair Access to Insurance Requirements) offer basic property coverage in areas voluntary insurers have retreated from. Several states operate workers compensation funds ; a few are monopolistic , meaning private workers compensation insurers cannot write the exclusive-remedy coverage there.
Contrast that with social insurance . Social Security and Medicare are compulsory, statutory programs aimed at social adequacy rather than individual actuarial equity. They are not commercial property-casualty products, they are not optional agency-management policies, and they do not compete with a businessowners policy. Keep the contrast clean: residual property-casualty markets still look like insurance policies; social insurance is a public benefit program.
Admitted vs Nonadmitted (Surplus Lines)
Admitted (licensed) insurers hold a certificate of authority in the state and generally file rates and forms as required. Their policies are typically protected, within statutory limits, by the state's guaranty fund if the company becomes insolvent.
Nonadmitted insurers are not licensed in that state. Eligible ones may still write through the surplus lines (excess and surplus, E&S ) market when the admitted market will not offer the coverage, limit, or form needed. Placement usually requires a licensed surplus lines broker , a diligent search of the admitted market, and surplus lines tax . Guaranty-fund protection generally does not apply . That is a customer-disclosure and professional-liability item, not trivia. Regulation of surplus lines is developed further later in this guide; here, know that market status changes both paperwork and protection.
Domestic, Foreign, and Alien
Status is always relative to a state . A domestic insurer is formed under that state's law. A foreign insurer is formed in another U.S. state. An alien insurer is formed in another country. A Connecticut stock company can be domestic in Connecticut, admitted foreign in Illinois, and not a surplus-lines problem in Illinois if it is already licensed there. A Bermuda company writing a U.S. factory on an E&S basis is alien and nonadmitted in that state. Do not confuse foreign with nonadmitted; a foreign insurer is often fully admitted.
Why Customers and Producers Should Care
Type drives who gets the profit , how surplus is rebuilt after a shock , whether a dividend is even possible , whether a guaranty fund stands behind the policy , and who has to sign the surplus-lines forms .
Picture three placements in the same week. A family buying personal auto from a regional mutual cares about service, claims handling, and the possibility of a dividend if the year is favorable. A manufacturer buying $25 million of product liability from a surplus-lines syndicate cares about financial strength, claims philosophy, and the absence of guaranty-fund backup. A hospital system joining an RRG cares about like-minded membership and multi-state operation. Matching the customer to the right type of insurer is part of how the industry succeeds — and part of how you succeed on an application-based AINS item.
- Type Owners Typical policy feature Why it matters on the account
- Stock Shareholders Usually nonparticipating Can raise equity capital; profits to owners
- Mutual Policyholders May pay dividends Capital mainly from operations
- Reciprocal Subscribers Attorney-in-fact manages the exchange Members insure one another
- Lloyd's Syndicate members Marketplace, not one company Specialty and surplus-lines placements
- Captive Parent or group Insureds own the insurer Retention and access to reinsurance
- Risk retention group Member-insureds Liability under the LRRA Multi-state liability without full admission
- Government / residual Public or industry plan Gap coverage Flood, residual auto, some workers compensation
- Social insurance Statutory program Compulsory benefits Social Security and Medicare — not commercial P&C
When you want more practice applying these labels to workplace facts, use the AINS practice questions . Ownership, capital, and reinsurance ideas also carry into later Institutes paths such as the CPCU study guide and the ARM study guide .