Self-insurance is a risk-management approach in which an organization pays for its own losses out of its own funds instead of buying a policy from an insurance company. Rather than sending premiums to a carrier that assumes the risk, a self-insured business keeps the risk itself, sets money aside to cover claims, and pays those claims directly as they come in. It is a regulated, structured practice, not the absence of insurance, and it is now the dominant model for employer health coverage: roughly two-thirds of workers with employer-sponsored health plans are enrolled in self-funded arrangements.
How the Money and Risk Actually Move
In a traditional insurance arrangement, you pay premiums and the carrier assumes the financial risk of covered losses. Self-insurance flips that relationship. The organization retains the risk. Money flows into an internal fund, or comes out of general operating revenue, when someone files a claim.
Almost no self-insured organization takes on unlimited exposure. Stop-loss insurance sits behind the self-insured layer and kicks in once claims cross a set threshold. It comes in two forms. Specific stop-loss caps what the organization can lose on any single claimant. Aggregate stop-loss caps the total for the group in a given year. Specific attachment points can range from around $10,000 for smaller employers up to $500,000 or more for large organizations comfortable absorbing bigger individual claims. Aggregate stop-loss is often set at roughly 125% of expected total claims. Together, the two policies let a self-insurer absorb routine, predictable costs while capping worst-case exposure.
Self-insurance is not the same as having no insurance. It requires approval from a state or federal regulator depending on the type of risk being self-insured, and operating outside those rules brings serious legal and financial consequences.
Where Self-Insurance Shows Up
Self-insurance appears in several distinct areas. Each has its own regulator, its own approval process, and its own rules.
Workers’ Compensation
Most states let qualifying employers self-insure their workers’ compensation obligations instead of buying a policy. The employer becomes responsible for paying injured workers’ medical bills, lost wages, and other statutory benefits directly. States generally require proof of financial strength, actuarial reports, and a surety bond before granting approval. A handful of states do not permit self-insured workers’ compensation at all and require commercial coverage or participation in the state fund.
Employee Health Plans
Self-funded health plans are the most common form of self-insurance. The employer pays employee medical claims from its own assets, typically with stop-loss coverage layered on top. These plans are governed primarily by federal law under ERISA, which produces a very different regulatory picture from state-regulated group health insurance.1Office of the Law Revision Counsel. 29 U.S. Code 1144 – Other Laws Self-insured plans still must follow key Affordable Care Act rules, including dependent coverage up to age 26, no pre-existing condition exclusions, no annual or lifetime dollar limits on essential health benefits, no waiting periods over 90 days, and coverage for certain preventive services without cost-sharing.
Liability and Property
Large organizations sometimes self-insure against general liability, professional liability, or property damage. The typical structure is a self-insured retention, or SIR. The organization handles and pays for all claims up to a specified dollar amount, including hiring its own defense counsel and managing investigations. A commercial liability policy only responds after the retention is exhausted. That is different from a standard deductible, where the insurer runs the claim from the first dollar and bills the policyholder afterward. An SIR demands more sophisticated internal claims handling, but it can meaningfully reduce premium costs for organizations with strong risk management.
What It Takes to Qualify
Becoming self-insured is not a decision an organization can make unilaterally. It has to apply for and receive authorization from the relevant regulator, and the bar is deliberately high.
Financial strength is the threshold question. Regulators want to see that the organization can absorb claims without threatening its ability to keep operating. Common benchmarks for workers’ compensation self-insurance include net worth of $25 million or more, or annual revenues of $50 million or more, though the exact figures vary. Applicants typically submit two or more years of audited financial statements from an independent certified auditor so regulators can look at stability over time rather than at a single snapshot.
Financial capacity alone is not enough. Applicants also have to show they can manage claims responsibly: a written risk-management or accident-prevention program, a plan for keeping reserves adequate, and either an in-house claims team or a contract with a licensed third-party administrator. Weakness in any of these can lead to denial.
Most jurisdictions also require a surety bond or other security deposit. Under the federal Longshore and Harbor Workers’ Compensation Act, for example, self-insurers must post an indemnity bond, letter of credit, or negotiable securities in an amount set by the Office of Workers’ Compensation Programs.2eCFR. 20 CFR Part 703 Subpart D – Authorization of Self-Insurers The deposit protects workers by keeping funds available even if the employer later becomes insolvent.
Reserves, Liquidity, and Paying Claims
Setting aside enough money to pay future claims is the central financial obligation of a self-insurer. The required reserve is usually set through actuarial analysis that factors in the organization’s claims history, employee demographics, industry risk profile, and expected future exposure. Reserves have to be adjusted as new claims come in and existing ones develop.
Liquidity matters as much as the total. Claims have to be paid promptly, not just shown as assets on a balance sheet. Regulators look at whether reserve funds are accessible quickly enough to meet obligations without forcing the organization to sell illiquid assets or borrow on bad terms.
Processing claims is a legal duty as well as an operational one. Many self-insured organizations hire third-party administrators to handle day-to-day work. A TPA brings experienced adjusters, established procedures, and technology that would be expensive to build in-house. The self-insured entity remains ultimately responsible for the TPA’s performance, so choosing one whose approach and compliance record fit the program is one of the more consequential setup decisions.
Organizations that handle claims internally need documented procedures for how claims are received, evaluated, approved, and paid. Clear communication with claimants about timelines, required documentation, and appeal rights reduces disputes and helps meet regulatory requirements. Workers’ compensation, in particular, comes with state deadlines for acknowledging claims, making initial payments, and issuing decisions, and missing them can trigger penalties.
How Self-Insurance Is Taxed
The tax treatment of self-insurance differs from ordinary insurance in one important way that catches organizations off guard: money set aside in a self-insurance reserve is not deductible. The IRS is explicit that amounts credited to a self-insurance reserve cannot be deducted, even if commercial coverage for the risk is unavailable. Actual losses, on the other hand, are deductible when they occur.3Internal Revenue Service. 2025 Publication 334 – Tax Guide for Small Business
Timing depends on the accounting method. Cash-basis taxpayers deduct claim payments in the year they are actually paid. Accrual-basis taxpayers can deduct once the “all-events test” is satisfied, meaning all events fixing the liability have occurred, the amount can be determined with reasonable accuracy, and economic performance has taken place.3Internal Revenue Service. 2025 Publication 334 – Tax Guide for Small Business An accrual-basis self-insurer can deduct a settled claim before the check is cut, but cannot deduct a speculative reserve for claims that might arise next year.
Actual claim payments, administrative costs, TPA fees, and stop-loss premiums qualify as ordinary and necessary business expenses under the general deduction rules of the tax code.4Office of the Law Revision Counsel. 26 U.S. Code 162 – Trade or Business Expenses The IRS reviews these expenses to confirm they are legitimate, so detailed records of every claim payment and related cost are not optional.
What Happens If Authorization Is Revoked
Losing self-insurance authorization is not a paperwork problem. It forces the organization to secure traditional coverage immediately, often at unfavorable rates, while remaining liable for all outstanding claims from the self-insured period.
Federal regulations under the Longshore Act spell out the grounds for revocation:
- Failure to comply with any legal requirement or regulation governing self-insurers
- Failure to follow a lawful order from the oversight agency
- Insolvency of the surety backing the self-insurer’s bond
- Impaired financial responsibility, meaning the organization can no longer show it has the capacity to meet its obligations
An employer that never properly filed the required agreements and security deposits is treated as if authorization never existed at all.2eCFR. 20 CFR Part 703 Subpart D – Authorization of Self-Insurers
The consequences reach beyond the certificate. Under the Longshore Act, an employer that fails to secure payment of workers’ compensation, whether through insurance or authorized self-insurance, commits a misdemeanor punishable by a fine of up to $10,000, imprisonment for up to one year, or both. Corporate officers, including the president, secretary, and treasurer, are personally liable for those penalties and for any unpaid compensation owed to injured workers.5Office of the Law Revision Counsel. 33 U.S. Code 938 – Penalties State penalties for operating without proper workers’ compensation coverage vary but generally follow a similar pattern of fines, potential criminal liability, and personal exposure for executives.
Why Organizations Choose Self-Insurance
Self-insured organizations have a direct financial incentive to prevent losses that a traditionally insured business does not. Every prevented claim is money that stays with the organization instead of appearing on someone else’s loss ratio. That is where self-insurance quietly pays for itself over time, and it is also where poorly run programs bleed money.
Effective risk management starts with analyzing your own claims data. Historical patterns show which injuries, illnesses, or incidents are driving costs, and that information should guide where you spend on prevention. A warehouse with a pattern of back injuries needs a different intervention than an office generating repetitive stress claims. Generic safety programs rarely move the needle the way targeted ones built around actual loss experience do.
Regular risk assessments help find hazards before they turn into claims. Workplace safety inspections, employee training, ergonomic evaluations, and operational procedure reviews reduce both the frequency and severity of losses over time. Organizations that get real value out of self-insurance treat risk management as an ongoing operational priority rather than an annual audit item. Over several years, a well-run loss-prevention program can cut claim costs enough to make the whole self-insurance structure worthwhile compared to commercial coverage.