What Professional Liability Insurance Costs (and Why the Number Varies So Much)

Most small businesses pay around $1,051 per year for professional liability insurance ^{[1] InsureonProfessional Liability Insurance Cost: Fast & Free Quotes} , but that average hides enormous variation. Annual premiums range from around $400 to over $7,000 ^{[2] InsureonProfessional Liability Insurance Cost: Fast & Free Quotes} , and where you land in that span depends on what you do, how much you bill, and what coverage limit you choose. This guide explains what drives the cost, what you’re actually buying, and where state law forces your hand on minimums.

What Professional Liability Insurance Covers

Professional liability insurance — also called errors and omissions (E&O) — pays when a client claims your work caused them financial harm. It covers legal defense and settlements when someone says your advice was wrong, your deliverable had mistakes, or you missed a deadline that cost them money. General liability insurance only covers bodily injury, personal injury, and property damage, so claims related to your services do not fall under the general liability umbrella. ^{[3] EmbrokerProfessional Liability Insurance Coverage & Quotes} If a client trips in your office, general liability responds. If they sue because your consulting recommendation tanked their launch, you need professional liability. Medical malpractice is a specialized subset of professional liability. A medical professional liability insurance policy covers bodily injury or property damage and also covers liability for personal injury such as mental anguish. ^{[4] National Association of Insurance CommissionersInsurance Topics | Medical Malpractice Insurance}

The Average Cost — and Why It Means Little

Small businesses pay an average of $88 per month for professional liability insurance. ^{[5] InsureonProfessional Liability Insurance Cost: Fast & Free Quotes} That’s the mid-point across every trade Insureon writes — accountants, consultants, designers, real estate agents, therapists. Your actual quote will be higher or lower depending on the variables insurers price individually.

What You Do

A bookkeeper who prepares tax returns faces different claim patterns than a web developer who builds e-commerce platforms. Insurers set base rates by profession, informed by their own loss history in that category. For a small business with less than $500,000 in revenue and coverage limits of $1 million, the average cost of professional liability insurance is around $1,000 per year. ^{[6] EmbrokerCPA Insurance Cost: How Much Should Accountants Pay?} That figure is specific to accountants; it’s not a universal benchmark.

How Much You Bill

Revenue is a rough proxy for how much economic harm a mistake could cause. A consultant billing $50,000 a year writes fewer engagements — and smaller ones — than a firm doing $2 million. Insurers adjust premiums accordingly.

The Limit You Choose

The policy limits for professional liability insurance coverage can vary significantly, from $250,000 to $2 million or more, and 56% of Insureon customers choose a professional liability policy with $1 million / $1 million limits. ^{[7] InsureonProfessional Liability Insurance Cost: Fast & Free Quotes} Higher limits cost more because the insurer is on the hook for larger potential payouts. The first number is the per-claim limit; the second is the aggregate annual cap. Aggregate limits vary by policy form: under traditional occurrence policies, the aggregate typically applies to the entire policy period and represents the total the insurer will pay for all claims combined, while some policies use per-claim aggregates or no aggregate at all.

Your Claims History

If you’ve had professional liability claims in the past three to five years, insurers treat you as higher risk and charge more. A clean record earns you standard rates; a claim or two can push your premium up or force you into surplus-lines markets where coverage costs more.

Where You Work

State laws sometimes require a specific amount of professional liability coverage if you work in a certain industry, such as healthcare or law, which determines how much you pay. ^{[8] InsureonProfessional Liability Insurance Cost: Fast & Free Quotes} Beyond mandates, claim severity varies by state — jury verdicts in one jurisdiction run higher than another, and insurers price that risk into the premium.

When State Law Sets the Floor

Most professions don’t have a legal obligation to carry professional liability insurance, but a few do.

Lawyers

The Oregon State Bar Professional Liability Fund began operation on July 1, 1978, and has been the mandatory provider of primary malpractice coverage for Oregon lawyers since that date. ^{[9] Oregon State Bar Professional Liability FundAbout - Who We Are} In 2026, the assessment for PLF primary coverage is $3,500 for each Oregon State Bar licensee, including licensed paralegals. ^{[10] Oregon State Bar Professional Liability FundDo I need coverage?} The PLF primary coverage limits are $300,000 per claim / $300,000 aggregate for every Oregon State Bar licensee engaged in the private practice of law in Oregon. ^{[11] Oregon State Bar Professional Liability FundAbout - Who We Are} Idaho is the only other U.S. state to require legal malpractice coverage, relying on attorneys to obtain that through commercial carriers. ^{[12] Oregon State Bar Professional Liability FundAbout - Who We Are} Washington doesn’t mandate coverage, but it does mandate disclosure if you’re under the threshold. Disclosure to clients is required if the lawyer lacks the minimum level of insurance, which is $100,000 per occurrence and $300,000 in the aggregate. ^{[13] Washington State Bar AssociationMalpractice Insurance Disclosure}

Healthcare Providers

Health care providers who have an active license to practice in Kansas are required to maintain a minimum of $500,000 / $1,500,000 in basic professional liability coverage. ^{[14] Kansas Health Care Stabilization FundKansas Residents} Health care providers can obtain coverage through one of approximately 25 primary carriers authorized to write business in Kansas. ^{[15] Kansas Health Care Stabilization FundKansas Residents} Kansas operates a state fund that layers on top of the primary market; the statute sets the floor, and providers buy from commercial carriers to meet it.

Claims-Made vs. Occurrence — and Why It Matters for Cost

Many insurers write professional liability on a claims-made form basis, where a policy in effect at the time a claim is reported responds for the loss. ^{[16] National Association of Insurance CommissionersInsurance Topics | Medical Malpractice Insurance} That’s the opposite of occurrence coverage, where the policy in effect when you did the work pays the claim, even if the lawsuit arrives years later. Claims-made policies are cheaper in the early years because your exposure window is short — you’re only covered for claims reported this year about work you did while insured. The catch: if you cancel the policy or let it lapse, you lose coverage for past work unless you buy tail coverage, which extends the reporting period. Tail typically costs 100% to over 200% of your last annual premium, a fact that’s easy to miss when you’re comparing quotes.

What Drives the Industry’s Loss Ratio

The NAIC’s Countrywide Summary of Medical Professional Liability Insurance indicates that the direct loss and defense cost containment (DCC) ratio was 75.60%. ^{[17] National Association of Insurance CommissionersInsurance Topics | Medical Malpractice Insurance} That figure is specific to medical malpractice, but it illustrates the economic reality across all professional liability lines: insurers pay out a high percentage of premium dollars in claims and defense costs. A 75.6% loss ratio means for every dollar collected in premium, 75.6 cents goes to claims and legal defense. The remaining 24.4 cents covers underwriting expenses, agent commissions, overhead, and profit. When loss ratios climb — because verdicts rise, or defense costs spike — premiums follow.

How to Get an Accurate Quote

The only way to know what you’ll pay is to request quotes with your actual revenue, coverage needs, and claim history. Insurers price on specifics, not industry averages. When you request quotes, have this information ready:

• Your exact profession or service category
• Annual revenue (last completed year and projected current year)
• Number of employees or 1099 contractors
• Desired coverage limits (per claim and aggregate)
• Any past professional liability claims, including closed claims
• States where you provide services

Get quotes from at least three carriers. Coverage forms vary — one policy might exclude certain service categories or cap defense costs inside the limit, while another offers broader terms at a similar price. Don’t quote-shop on price alone; read the exclusions and definitions sections.

What You Won’t Find in the Bundle

The sources available for this guide don’t break out premium ranges by individual profession outside of accounting. If you’re an architect, engineer, consultant, or real estate agent looking for profession-specific benchmarks, you’ll need to request quotes directly. Similarly, the bundle doesn’t support state-by-state E&O minimums for professions outside healthcare and law, so check your state licensing board if you’re in a regulated profession.

The Bottom Line

Professional liability insurance costs between a few hundred and several thousand dollars a year, and where you land depends on what you do, how much you bill, and what limit you choose. Mandatory minimums apply if you’re a lawyer in Oregon or Idaho, a healthcare provider in Kansas, or practicing in one of the handful of other jurisdictions with professional-specific requirements. For everyone else, the choice is economic: you’re weighing the premium against the cost of defending a claim out of pocket, which can hit six figures before you ever get to a settlement. Request quotes with your actual details, compare coverage terms alongside price, and remember that claims-made policies require tail coverage if you ever cancel — a cost that doesn’t show up in the year-one premium.