What Is Errors & Omissions Insurance?

Errors and omissions insurance protects a business from claims that its professional services, advice, or work product caused financial harm to a client. It is the coverage that pays for the lawsuit when a client says you should have known better, missed a deadline that cost them money, gave them bad advice, or failed to deliver what was contractually promised. For consultants, accountants, attorneys, insurance agents, IT professionals, real estate agents, architects, financial advisors, and any other business that sells expertise, errors and omissions (E&O) is the single most important liability coverage in your insurance program.

Commercial general liability does not respond to these claims. Property insurance does not respond to these claims. The financial damages from a serious professional services claim can range from tens of thousands to millions of dollars, and they come due whether your business wins or loses in court. This guide explains what E&O insurance is, what it covers, the technical structure of the policy that most generic guides skip, and how it fits inside a complete commercial program.

What Is Errors and Omissions Insurance?

Errors and omissions insurance, also called professional liability insurance, is a commercial policy that responds to claims arising from the actual or alleged negligent performance of professional services. In some industries the same coverage goes by other names: malpractice insurance for doctors and lawyers, technology errors and omissions for IT and software firms, miscellaneous professional liability for hard-to-classify professions. The underlying coverage logic is the same.

E&O is structurally different from general liability. Commercial general liability covers bodily injury and tangible property damage. E&O covers financial damages to clients arising from the work you were hired to do. A consultant who delivers a flawed strategy that costs the client $2 million in lost revenue has caused financial damages, not bodily injury. A general liability policy will not respond. An E&O policy will.

What Does Errors and Omissions Insurance Cover?

A standard errors and omissions policy responds to the following:

• Negligent acts, errors, or omissions in the professional services you performed for a client
• Breach of professional duty, including failure to meet a contractual obligation or the standard of care expected in your profession
• Misrepresentation made in the course of providing professional services
• Defense costs, including attorney fees, expert witness fees, and court costs. For complex commercial litigation, defense rates typically run $300 to $700 per hour, and a single E&O case can produce six figure defense costs even before any settlement
• Settlements and judgments awarded to the claimant, up to the policy limit
• Disciplinary proceedings and regulatory defense in some policy forms, particularly for licensed professionals

Defense costs treatment is one of the most important and most overlooked details in any E&O policy. Some policies pay defense costs in addition to the policy limit, which preserves the full limit for settlements and judgments. Other policies pay defense within the limit, which means every dollar spent on attorneys reduces the money available to settle the claim. The difference can be hundreds of thousands of dollars in real coverage value on a single claim.

What Errors and Omissions Insurance Does Not Cover

E&O policies have meaningful exclusions:

• Intentional acts, fraud, or criminal conduct by the insured
• Bodily injury and tangible property damage: these are covered by commercial general liability, not E&O
• Employment-related claims: discrimination, wrongful termination, and harassment claims belong on an employment practices liability policy
• Wage and hour disputes and related labor compliance claims
• Cyber and data breach exposure: covered by cyber liability insurance, though technology E&O can include some cyber components
• Director and officer decision-making: covered by directors and officers liability, a related but distinct product
• Pre-existing or known circumstances the insured was aware of before the policy bound
• Pollution and bodily injury claims, which require their own dedicated policies

Claims-Made Policies, Retroactive Dates, and Tail Coverage

The single most important technical concept in E&O insurance is that most policies are written on a claims-made basis, not an occurrence basis. This affects coverage in ways that most policyholders do not understand until a claim is filed.

A claims-made policy responds only if the claim is first made against the insured during the active policy period. The work that triggered the claim must have been performed after the policy's retroactive date, which is typically the date the insured first bound continuous E&O coverage. Letting an E&O policy lapse, or changing carriers without securing prior acts coverage, can create permanent uninsured gaps for years of past work.

An occurrence policy, by contrast, responds if the negligent act occurred during the policy period, regardless of when the claim is later filed. Occurrence policies are common in general liability but rare in modern E&O.

Three practical implications for any professional services business:

• Maintain continuous coverage. Even a brief gap can create permanent exposure for past work. Renewals are not optional even if the business is winding down.
• Protect the retroactive date. When changing carriers, the new policy should match or precede the original retroactive date. A new policy with a current retro date excludes every claim arising from work done before that date.
• Purchase tail coverage when retiring or selling the business. An Extended Reporting Period (ERP), often called tail coverage, extends the time during which claims can be reported against the most recent policy. For a retiring professional with 30 years of past work exposure, tail coverage is essential.

Who Needs Errors and Omissions Insurance?

Any business that sells professional services, advice, or work product where a mistake could cause a client financial harm needs E&O coverage. The high-frequency industries we write at Pro Insurance Group include:

• Insurance agents and brokers: agency E&O for placement and coverage advice errors
• Information technology and software companies: technology E&O often coordinated with cyber liability for managed service providers, SaaS, and consultancies
• Real estate professionals: agents, brokers, property managers, and appraisers
• Accountants and bookkeepers: tax preparation, audit, and advisory work
• Attorneys: legal malpractice coverage, often through state bar approved programs
• Financial advisors and investment professionals: subject to FINRA and state securities regulator oversight
• Consultants and management advisors: strategy, operations, marketing, HR, and other advisory firms
• Architects and engineers: design professional liability often coordinated with project specific policies
• Healthcare and senior care providers: medical malpractice and senior care professional liability
• Notaries, paralegals, and other licensed professionals: lower limit but essential E&O coverage

The common thread across all of these is that a client pays for expertise and may sue if that expertise causes them harm. Many of these professions are also required by their licensing board, state regulator, or industry contract to carry E&O coverage at minimum limits.

How Much Does Errors and Omissions Insurance Cost?

E&O premiums vary widely by profession, revenue, claim history, and the limits selected. For most small to mid-sized professional services firms:

• $500 to $2,000 per year for small consultancies, freelancers, and lower-risk professions with limited claim history
• $1,500 to $7,500 per year for established professional services firms in mid-risk classes (accounting, IT consulting, real estate brokerages)
• $5,000 to $25,000+ per year for higher-risk classes (legal, architecture, engineering, insurance agencies, healthcare)

The largest variables in pricing are profession class code, gross revenue, prior claim history, the limits and deductibles selected, and whether the policy includes defense within or outside the limit. Limits typically range from $250,000 to $5 million per claim with comparable aggregates. For most professional services firms, $1 million is the minimum we recommend.

How E&O Fits Inside a Complete Commercial Insurance Program

E&O is one coverage inside a coordinated commercial program. Most professional services firms need E&O alongside commercial general liability (for premises and operations claims unrelated to professional work), workers compensation (for employee injuries), cyber liability (for data and network exposure), employment practices liability (for HR-related claims), and a commercial umbrella for excess liability above the underlying limits. For firms with a corporate board or outside investors, directors and officers coverage rounds out the management liability stack.

An independent broker working across all of these coverages can structure the program so that claims do not fall between policies and so that no single claim erodes coverage for a future claim in a different category.

Frequently Asked Questions

Build E&O Coverage That Matches Your Profession

Pro Insurance Group writes errors and omissions coverage for professional services firms across Illinois and nationally, with deep experience in insurance agency E&O, technology E&O, real estate, accounting, consulting, architecture and engineering, and healthcare professional liability. We work with the carriers that underwrite each profession profitably and structure coverage to coordinate with the rest of your commercial insurance program.

Call our commercial lines team at 833-776-4671, learn more about our full errors and omissions insurance program, or request a commercial insurance quote for your business today.

About the author: Neal Fusco is Vice President of Commercial Lines at Pro Insurance Group. With more than 25 years of insurance experience, Neal specializes in habitational, senior care, trucking and towing, and workers compensation placements for owners and operators across the Midwest and nationally. Connect with Neal on LinkedIn or reach him directly at nfusco@proinsgrp.com or 847-450-0389.