17.2 Rates, Forms, Solvency, and Guaranty Associations

How Rates and Forms Get Approved

State insurance codes require that property and casualty rates be adequate, not excessive, and not unfairly discriminatory — memorize all three prongs. "Adequate" protects solvency (rates high enough to pay claims), "not excessive" protects consumers from overcharging, and "not unfairly discriminatory" means insureds with the same expected loss must be treated the same (it does not mean every insured pays the same price — risk-based pricing is legal).

States use several rate-filing systems:

ISO, Advisory Organizations, and Standard Forms

Most insurers do not write their own policy language. They license standardized ISO (Insurance Services Office) forms. The exam expects you to recognize core ISO form names and editions:

• HO-3 (ISO Homeowners 3, Special Form) — the most common homeowner form: open-peril on the dwelling (Coverage A) and named-peril on personal property (Coverage C).
• HO-5 — open-peril on both dwelling and contents.
• DP-1 / DP-2 / DP-3 — Dwelling Property forms for non-owner-occupied risks.
• CP 00 10 (Building and Personal Property Coverage Form) and CP 00 90 (Commercial Property Conditions) in the commercial package.
• CG 00 01 — the ISO Commercial General Liability (CGL) occurrence form; CG 00 02 is the claims-made version.
• CA 00 01 — Business Auto Coverage Form; PP 00 01 — Personal Auto Policy (PAP).

Advisory organizations like ISO file prospective loss costs (the pure-premium expectation) with regulators; the individual insurer then applies its own loss-cost multiplier for expenses and profit to derive the final rate.

Policy forms themselves are also regulated. Most states require forms to be filed and approved for readability and statutory compliance before use. A manuscript form is custom-drafted for a specific risk rather than pulled from the standard ISO library. Editions matter: ISO periodically revises forms (the edition date, e.g., CG 00 01 04 13, identifies the version), and an insurer must use the edition approved in that state. Endorsements (e.g., CP 04 05 ordinance-or-law) amend the base form and are likewise filed.

Worked Numerics: Coinsurance, ACV, Split Limits, Experience Mod

Coinsurance penalty. A commercial building is insured for $800,000 with an 80% coinsurance clause. Replacement cost is $1,250,000, so the required amount is 0.80 × 1,250,000 = $1,000,000. A $200,000 loss is paid as:

• (Carried ÷ Required) × Loss − deductible
• (800,000 ÷ 1,000,000) × 200,000 = $160,000 (before deductible). The $40,000 shortfall is the coinsurance penalty borne by the insured for underinsuring.

Actual Cash Value (ACV). ACV = Replacement Cost − Depreciation. A roof costing $20,000 to replace, 12 years into a 20-year life, is depreciated 60%: ACV = 20,000 − 12,000 = $8,000.

Split limits. A PAP written 100/300/50 means $100,000 bodily injury per person, $300,000 BI per accident, and $50,000 property damage per accident.

Experience modification. A workers-comp experience mod (EMR) of 1.25 raises manual premium 25%; a mod of 0.85 lowers it 15%. Manual premium $40,000 × 1.25 = $50,000.

Solvency Oversight and Guaranty Associations

Regulators police solvency through financial examinations, risk-based capital (RBC) requirements, and the NAIC accreditation standards. When RBC falls below trigger levels, the regulator may take graduated action up to rehabilitation or liquidation (the Commissioner acts as receiver).

When an insurer becomes insolvent, the state Guaranty Association pays covered claims of policyholders, funded by post-insolvency assessments on the solvent insurers in that state. Traps to remember: guaranty-association coverage has per-claim caps, excludes surplus lines (non-admitted) insurers, and producers may not advertise guaranty-fund protection as an inducement to buy. Admitted (licensed) insurers participate; non-admitted/surplus-lines insurers do not.

The RBC framework defines escalating intervention levels — Company Action Level, Regulatory Action Level, Authorized Control Level, and Mandatory Control Level — each triggering progressively stronger regulatory power, up to seizing the insurer. Reserves and reinsurance also support solvency: an insurer cedes risk to a reinsurer to limit net exposure, and statutory accounting (SAP), which is more conservative than GAAP, governs how reserves and surplus are reported to regulators.

Rating Laws and the Three Rate Goals

Regulators evaluate rates against three statutory standards the exam loves: rates must not be excessive, inadequate, or unfairly discriminatory. The approval mechanism varies by state and is tested as a list: prior approval (file and wait for approval), file-and-use (file, then use), use-and-file (use, then file shortly after), flex rating (file only outside a set band), and open competition (no-file) where market forces set rates. Loss costs developed by advisory organizations like ISO are combined with each insurer's expense/profit loading.

Solvency Tools and Guaranty Associations

Solvency regulation includes risk-based capital (RBC) requirements, periodic financial examinations, and NAIC accreditation. When an admitted insurer becomes insolvent, the state guaranty association pays covered claims up to statutory caps (commonly $300,000 per claim for P&C), funded by assessments on other admitted insurers. Two tested limits: surplus-lines and non-admitted insurers are not protected by the guaranty fund, and advertising guaranty-fund backing to sell a policy is an unfair practice.