Self-insure vs buy insurance is the fork every growing business hits. You have cash in the bank. You wonder if you even need a policy. The answer depends on your size, your state, and how much risk you can stomach. For most small businesses, buying coverage wins. However, once you cross certain financial thresholds, self-insurance starts to make sense. This guide breaks down exactly when each path works, what it costs, and what the law requires.
Self-Insure Vs Buy Insurance: The Key Differences
When you self-insure vs buy insurance, you are choosing who holds the risk. Buy a policy, and the carrier absorbs the loss. Self-insure, and your business pays claims out of its own pocket, typically up to a set retention limit. In most cases, self-insured employers also buy excess coverage above that limit to cap catastrophic exposure.
Here is a side-by-side comparison of the two approaches across the factors that matter most to owners.
| Factor | Buy Commercial Insurance | Self-Insure |
|---|---|---|
| Who pays claims | Carrier pays, you pay premiums | You pay claims directly up to the retention limit |
| Typical monthly cost (GL + WC, 5 employees) | $300–$700/month | $0 premium, but must reserve $50,000–$250,000+ in liquid funds |
| Upfront financial requirement | First premium payment (often $500–$2,000) | Security deposit of $1.9M (NY) to $5M net worth (CA) |
| Admin burden | Low — carrier handles claims | High — you hire a TPA or in-house claims team |
| State approval needed | No (just buy a policy) | Yes — must apply to state DOI or workers comp board |
| Best for | Businesses under 50 employees, under $5M net worth | Large employers (100+ employees) with strong cash reserves |
| Risk if a big claim hits | Carrier pays up to policy limit | You pay up to retention ($25K–$500K+), then excess kicks in |
| Cash flow | Fixed monthly premium — predictable | Variable — low-claim years save money, bad years hurt |
The self-insure vs buy insurance decision also affects your legal standing. As a result, some states require proof of insurance from a licensed carrier to bid on contracts or renew a business license. Self-insurance certificates satisfy some of these requirements, but not all.
When Each Option Is the Better Choice
Buying coverage is the better choice when your business is small, growing, or cash-tight. For example, a plumbing company with 8 employees and $1.2 million in revenue cannot meet California’s $5 million net worth requirement to self-insure workers comp. Buying a policy at roughly $1.03 per $100 of payroll is the only practical path. The same logic applies to general liability, where a $45/month median policy from a carrier beats setting aside tens of thousands in reserves.
Self-insurance makes sense when you have the financial muscle to absorb losses. Typically, that means 100-plus employees, $5 million or more in net worth, and at least three years of audited financials. Large restaurant groups, regional contractors, and manufacturing firms often self-insure workers comp because their loss history is predictable. They set a self-insured retention of $100,000 to $500,000, buy excess coverage above that, and save 10–20% compared to traditional premiums. However, they also need a third-party administrator to manage claims, which adds $15,000–$50,000 per year in admin costs.
A hybrid approach also exists. Many mid-size businesses evaluate self-insure vs buy insurance and land on a large-deductible policy. You pay the first $25,000–$100,000 of each claim, and the carrier covers the rest. This gives you some premium savings without the full regulatory burden of self-insurance.
The Costs and Trade-Offs
The cost gap between self-insure vs buy insurance is not as wide as many owners expect. A typical small business pays $150–$500/month for a multi-line package (general liability, property, and workers comp). That is $1,800–$6,000 per year. Self-insuring eliminates the premium but replaces it with reserves, TPA fees, excess insurance, and surety bonds. For a 200-employee company, those costs often run $400,000–$800,000 per year — but so would traditional premiums.
The real trade-off is volatility. With bought coverage, your costs are fixed and predictable. With self-insurance, a single bad year — a serious workplace injury, a large liability claim — can blow through your reserves. For example, the average workers comp lost-time claim costs $41,000–$45,000 nationally. A small business self-insuring with thin reserves could face a cash crisis from just two or three serious claims in one year.
There is also an opportunity cost when you weigh self-insure vs buy insurance. Money locked in reserve accounts or surety bonds cannot fund equipment, hiring, or expansion. For a growing business, that capital has a high alternative value.
How This Varies by Trade and State
The self-insure vs buy insurance calculation shifts dramatically by state and industry. Workers comp rates alone range from $0.57 to $2.50+ per $100 of payroll depending on your trade classification and location. States with monopolistic funds — Ohio, North Dakota, Washington, and Wyoming — do not allow private self-insurance for workers comp at all. You must buy from the state fund.
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| State | WC Rate (per $100 payroll) | Self-Insurance Min. Requirement | Mandate Trigger | Monopolistic Fund? |
|---|---|---|---|---|
| California | $1.52 | $5M net worth, $500K net income, 3 yrs audited financials | 1 employee | No |
| New York | $1.25 | $1.907M security deposit (eff. July 2025) | 1 employee | No |
| Florida | $1.40 (6.9% cut approved for 2026) | 3 yrs financials, retention capped at $600K or 1.5% of net worth | 4 employees (non-construction), 1 (construction) | No |
| Ohio | $1.10 | 2 yrs claims history with state fund | 1 employee | Yes — state fund only |
| Texas | $1.06 | No state mandate — employer can opt out entirely | None (voluntary) | No |
For example, a Florida construction firm with 10 employees must carry workers comp from employee one. Self-insuring is not realistic at that size. However, a Texas trucking company with the same headcount could legally skip coverage entirely — though most carry it anyway because clients and lenders require proof of insurance. In most cases, the self-insure vs buy insurance question is answered by your state’s financial thresholds before you even get to the cost math.
Frequently Asked Questions
Can a sole proprietor self-insure?
Technically yes, but practically no. Self-insuring means you personally absorb every loss. A single slip-and-fall lawsuit could cost $50,000–$200,000. Most sole proprietors are better served buying a general liability policy at $30–$60/month. The self-insure vs buy insurance math heavily favors buying at this size.
Does self-insurance mean I have no insurance at all?
No. Formal self-insurance means you fund claims yourself up to a set retention amount and typically carry excess coverage above that. It requires state approval, financial reserves, and often a surety bond. Simply skipping insurance is being uninsured, which is illegal for workers comp in 49 states. The self-insure vs buy insurance distinction matters legally.
What is a self-insured retention (SIR) and how is it different from a deductible?
With a deductible, the insurer pays the claim first and bills you back. With an SIR, you manage and pay the entire claim — including legal defense — up to your retention limit before the insurer’s obligation begins. Common SIR amounts range from $10,000 for small policies to $500,000+ for large employers. This is a key factor when comparing self-insure vs buy insurance options.
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What you pay depends on your trade, your state, your revenue, and your claims history. The only way to know your real price is to compare several quotes side by side.
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Sources & How to Verify
The information on this page is drawn from official government and industry sources. Insurance requirements, premiums, and state rules change, so always confirm the exact figure with your state, a licensed agent, or the authority source.
- U.S. Small Business Administration: sba.gov — federal small-business insurance guidance
- Insurance Information Institute: iii.org — neutral premium and coverage data
- NAIC: naic.org — state insurance regulation data
- U.S. Department of Labor: dol.gov — workers’ compensation overview
- Your state DOI, workers’ comp board, and contractor-licensing board: search “[your state] department of insurance” or “[your state] workers comp” for the exact law and forms
Content last reviewed June 2026. If you notice outdated information, please contact us.
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Informational only — not insurance, legal, or tax advice. Business Insure Guide is an independent educational resource, not an insurance company, broker, law firm, or tax advisor, and this page does not provide insurance, legal, or tax advice. Requirements, premiums, and rules vary by trade, state, and insurer, and change over time. Always confirm the exact coverage, requirement, and price with a licensed insurance agent and your state before you buy. Verify with a licensed professional for advice about your specific situation.