17.2 Rates, Forms, Solvency, and Guaranty Associations
Key Takeaways
- Rates must be ADEQUATE, NOT EXCESSIVE, and NOT UNFAIRLY DISCRIMINATORY; filing systems range from prior approval to open competition.
- Coinsurance penalty: Payment = (Carried/Required) x Loss - Deductible; ACV = Replacement Cost - Depreciation.
- Workers comp modified premium = manual premium x e-mod; e-mod above 1.00 is a debit, below 1.00 a credit.
- Guaranty associations cover ADMITTED insurer insolvencies only, fund by assessing other admitted insurers, cap payouts, and cannot be used as a sales inducement.
Rates, Forms, Solvency, and Guaranty Associations
State regulators control three core things: the rates insurers charge, the forms (policy language) they use, and the financial solvency that backs the promise to pay. The guiding statutory standard for rates is that they must be adequate, not excessive, and not unfairly discriminatory. Memorize all three together.
Breaking the standard down: adequate means high enough to keep the insurer solvent and able to pay claims; not excessive means not unreasonably high relative to the risk and a reasonable profit; and not unfairly discriminatory means insureds with the same expected loss exposure pay the same rate. Fair discrimination by genuine risk characteristics (e.g., a sprinklered building paying less) is permitted; unfair discrimination by unrelated factors is prohibited.
Rate filing systems
| Filing law | How it works |
|---|---|
| Prior approval | Insurer must file and receive approval before using the rate |
| File-and-use | Insurer files, then may use immediately (regulator can later disapprove) |
| Use-and-file | Insurer uses the rate, then files within a set period |
| Flex rating | Prior approval only if the change exceeds a set band (e.g., ±10%) |
| Open competition (no file) | Market sets rates; regulator monitors competition |
| State-mandated | Regulator sets the rate (rare in P&C) |
Worked example: the experience modification factor
In workers compensation, the experience modification factor (e-mod or x-mod) adjusts a manual premium based on the insured's own loss history versus expected losses for its classification. The mechanics:
- Manual premium = (Payroll ÷ 100) × Rate.
- Modified premium = Manual premium × e-mod.
Example: a contractor has a manual premium of $40,000 and an e-mod of 1.25 (worse-than-average losses). Modified premium = $40,000 × 1.25 = $50,000. A better-than-average insured with an e-mod of 0.85 pays $40,000 × 0.85 = $34,000. An e-mod above 1.00 is a debit (surcharge); below 1.00 is a credit. This rewards loss control and is the workers comp expression of 'not unfairly discriminatory.'
Worked example: coinsurance and ACV
Property forms — for example the ISO Building and Personal Property Coverage Form (CP 00 10) with the Causes of Loss forms (CP 10 10 Basic, CP 10 20 Broad, CP 10 30 Special) — commonly carry an 80% coinsurance clause. If the insured carries less than the required amount, the loss payment is reduced by formula:
Payment = (Carried ÷ Required) × Loss − Deductible.
Example: a building is valued at $500,000; 80% coinsurance requires $400,000 of coverage. The insured carries only $300,000 and suffers a $100,000 loss with a $1,000 deductible. Payment = ($300,000 ÷ $400,000) × $100,000 − $1,000 = 0.75 × $100,000 − $1,000 = $74,000. The insured absorbs the rest as a coinsurance penalty for being underinsured at the time of loss.
When a form pays actual cash value (ACV), ACV = Replacement Cost − Depreciation. A 10-year-old roof with a 20-year expected life and a $20,000 replacement cost has depreciated 50%, so ACV = $20,000 − $10,000 = $10,000. Replacement cost coverage waives that depreciation, but typically only once the insured actually repairs or replaces the property; until then the insurer may pay ACV and hold back the recoverable depreciation.
Solvency and the guaranty association
Regulators monitor solvency through periodic financial examinations, risk-based capital (RBC) ratios, reserve-adequacy testing, and annual statement review. When a member insurer becomes insolvent, the state guaranty association steps in to pay covered claims of resident policyholders, funded by assessments on the other admitted insurers writing that line in the state — not by general tax revenue.
Key traps to remember:
- Guaranty associations cover admitted insurers only — surplus lines insolvencies are not protected.
- Coverage is subject to per-claim caps set by state law (commonly around $300,000, varying by state and line).
- Producers may not advertise or use guaranty-fund protection as a sales inducement — doing so is an unfair trade practice in most states.
A commercial building is valued at $500,000 with an 80% coinsurance clause. The insured carries $300,000 and suffers a $100,000 loss with a $1,000 deductible. What does the insurer pay?
Which statement about a state insurance guaranty association is TRUE?
Rate-Filing Systems and the Three Rate Standards
States approve rates under one of several filing systems, and the exam asks you to match a description to the system:
| System | How it works |
|---|---|
| Prior approval | Insurer must wait for regulator approval before using the rate |
| File-and-use | Insurer files and may use immediately; regulator can later disapprove |
| Use-and-file | Insurer uses the rate, then files within a set period |
| Flex rating | Prior approval only if the change exceeds a set percentage band |
| Open competition (no file) | Market sets rates; regulator monitors |
Whatever the system, rates must meet three standards: they must be adequate (enough to pay claims and keep the insurer solvent), not excessive (not unreasonably high for the coverage), and not unfairly discriminatory (like exposures pay like rates). Memorize adequate, not excessive, not unfairly discriminatory — it is asked verbatim.
Solvency and the guaranty association: Regulators police solvency through financial examinations, risk-based capital (RBC) requirements, and reserve rules. When an admitted insurer becomes insolvent, the state guaranty association pays covered claims up to statutory caps, funded by assessments on other admitted insurers in the state. Surplus-lines (non-admitted) insurers are not covered by the guaranty association — the single most-tested solvency point.