Definition:Cost of insurance (COI)
📋 Cost of insurance (COI) is the specific periodic charge deducted from a cash-value life insurance policy to cover the insurer's mortality risk exposure. Often referenced by its abbreviation COI, the term appears most frequently in the context of universal life, indexed universal life, and variable universal life policies, where the charge is transparently separated from other policy components such as expense loads, surrender charges, and the credited interest or index-linked gains. By isolating the COI, these products give policyholders and their advisors a clear line of sight into what the pure insurance protection actually costs each month.
🔍 Each policy period, the carrier calculates the COI by multiplying the applicable cost-of-insurance rate — expressed per thousand dollars of coverage — by the policy's net amount at risk. The rate itself is determined through actuarial assessment of the insured's attained age, risk class, and the policy's duration, subject to the maximum guaranteed rates specified in the contract. In practice, many carriers charge current COI rates below the guaranteed ceiling, but they retain the contractual right to raise rates up to that maximum if mortality experience, lapse rates, or investment returns deteriorate. This optionality makes the COI a lever the insurer can pull to manage profitability on in-force blocks of business.
⚠️ The COI has become a flashpoint in insurance litigation and regulatory oversight, particularly when carriers have raised current COI rates on older blocks of universal life policies. Policyholders who purchased coverage decades ago — sometimes relying on illustrated assumptions that never materialized — can face sharply higher charges that accelerate cash-value depletion and threaten policy lapse. Several high-profile class-action lawsuits have alleged that COI increases were driven not by worsening mortality but by the insurer's desire to recoup losses from low interest rates, raising questions about the contractual basis for such adjustments. For underwriters, product designers, and compliance teams, the COI mechanism demands careful calibration that balances long-term solvency with fair treatment of existing policyholders.
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