Captive Insurance Companies: How Small Businesses Use Micro-Captives for Risk Management and Tax Planning

Captive insurance is the most powerful tax-advantaged structure available to profitable small and mid-sized businesses, and simultaneously the most heavily scrutinized by the IRS. The concept is straightforward: instead of paying premiums to a commercial insurer (where the money is gone), the business pays premiums to its own insurance company, which it controls. Under IRC 831(b), a captive insurance company with $2.65 million or less in annual net written premiums (2025 threshold, adjusted for inflation) can elect to be taxed only on investment income, meaning the premiums themselves are received tax-free by the captive. The insured business deducts the premiums as an ordinary business expense under IRC 162, creating a deduction at the business level and tax-free income at the captive level. Over time, the captive accumulates significant reserves that can be invested, loaned back to the business (with proper documentation), or eventually distributed. When the captive is eventually wound down or the owner dies, the accumulated reserves can pass to heirs with a stepped-up basis. The catch is that the arrangement must constitute genuine insurance: there must be risk shifting (from the insured to the captive), risk distribution (among enough insureds or through reinsurance), the premiums must be set by an actuary at arm’s length rates, and the captive must operate as a real insurance company. The IRS has won case after case against captives that were nothing more than tax shelters with inflated premiums, fabricated risks, and no real insurance operations.

How does a captive insurance company save taxes?

Is business insurance tax deductible?

Business insurance premiums (general liability, professional liability, property, cyber liability, and business interruption) are fully deductible as ordinary business expenses on Schedule C or the corporate return in the year paid. Workers’ compensation premiums are deductible as a labor cost. Health insurance premiums for sole proprietors and more-than-2% S-Corp shareholders are deductible on Form 1040, not on Schedule C. Key person life insurance premiums are NOT deductible, though the proceeds are generally tax-free. If a policy covers both personal and business use (auto insurance on a mixed-use vehicle), only the business-use percentage is deductible.

What happens when I receive an insurance payout?

The tax treatment depends on what the payout covers. Proceeds that reimburse a previously deducted expense (lost inventory, repair costs) are taxable income because the deduction already reduced tax. Proceeds exceeding your adjusted basis in a destroyed asset create a taxable gain, though IRC 1033 allows deferring the gain by reinvesting in similar property within two years. Business interruption payments that replace lost profits are taxable income. Liability claim proceeds (insurance pays a settlement on your behalf) are generally not taxable to the business. Document every claim and payout for the tax return.

What insurance premiums are tax-deductible for self-employed individuals?

Self-employed individuals can deduct health insurance premiums for themselves, their spouse, and dependents as an above-the-line deduction on Form 1040, which reduces AGI directly. This deduction under IRC 162(l) is limited to your net self-employment income from the business that established the plan, and you can’t claim it for months you were eligible for employer-subsidized coverage through a spouse’s job. Business insurance premiums including general liability, professional liability (E&O), property insurance, and business interruption insurance are fully deductible as ordinary business expenses on Schedule C. Workers’ compensation premiums are deductible as a business expense, and key person life insurance premiums are deductible only if the business isn’t a beneficiary of the policy.

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.