Professional liability insurance — also known as errors and omissions (E&O) — covers claims arising from actual or alleged negligent acts, errors, or omissions in the rendering of (or failure to render) professional services. It is the foundational liability coverage for any business whose product is expertise, advice, or services rather than tangible goods.
The line ranges from tightly defined coverage for specific licensed professions (lawyers, accountants, architects, engineers, medical professionals) to broadly written "miscellaneous professional liability" responding to consultants, technology firms, advisors, agents, and a long tail of service businesses whose work creates contractual or duty-based exposure. The right form for any given insured depends on the work performed, the contractual structure of client relationships, and the regulatory framework of the profession.
Professional liability insurance / errors and omissions (E&O) — a third-party liability policy that pays defense costs, settlements, and judgments for claims arising from the insured's actual or alleged negligent act, error, or omission in providing professional services. Coverage is typically written on a claims-made basis with a retroactive date establishing the earliest covered conduct.
What professional liability covers
The policy responds to claims alleging that the insured's professional services caused financial loss to a client or other party with whom the insured has a professional relationship. The covered loss is the third party's financial loss — not the insured's own — and the policy pays defense, settlement, and judgment subject to retention and limits.
Negligent acts, errors, or omissions in the performance of professional services — the core of the policy
Failure to render services the insured agreed to provide
Breach of professional duty recognized by law or contract
Misrepresentation made in the course of professional services (subject to fraud-act exclusion at final adjudication)
Vicarious liability for the acts of employees, contractors, and (often) joint venturers
Personal injury arising from professional services — libel, slander, defamation in the course of the work (often a sub-limit)
Defense of regulatory and disciplinary proceedings by professional licensing bodies (typically by endorsement, often sub-limited)
The professions and classes we place
Technology and software
Technology E&O — typically combined with cyber liability in a single "tech E&O" policy — covers software developers, SaaS companies, IT services firms, managed service providers, integrators, and consultants. The combined form addresses both the professional liability exposure (the software did not perform as warranted) and the cyber exposure (the system was breached and customer data was compromised). For any modern technology business, the combined structure is the standard.
Consultants and management advisors
Management consultants, strategy advisors, HR consultants, marketing agencies, public relations firms, and the broad category of business-services providers. The exposure profile is dominated by claims that recommendations caused client financial loss, that scope of work was not delivered, or that engagement deliverables fell short of contractual specification.
Financial advisors and registered investment advisors
RIAs, financial planners, broker-dealers, and investment management firms. Coverage typically includes regulatory defense for SEC and state-securities-administrator proceedings, and responds to suitability claims, breach-of-fiduciary-duty allegations, and discretionary-trading errors. Often structured alongside the registered firm's D&O.
Real estate professionals
Real estate agents, brokers, property managers, and appraisers. The dominant claim source is failure-to-disclose litigation in residential transactions; for commercial brokers, it is non-disclosure of material defects and misrepresentation of investment characteristics.
Architects, engineers, and design professionals
Design professional liability is a distinct sub-line with its own form library and underwriting standards. We place architecture firms, civil engineers, structural engineers, MEP engineers, surveyors, and landscape architects. Construction-related design exposure is severe and increasingly litigated; the standard of care, the contractual indemnity provisions, and the limitation-of-liability clauses in design agreements drive the placement strategy.
Accountants and tax professionals
CPA firms, tax preparers, bookkeepers, and audit firms. The form responds to tax-preparation errors, audit-related claims, attestation engagements, and the increasingly common claims arising from advisory and consulting services CPAs now provide alongside attest work.
Miscellaneous professional liability
The catchall form for service professions that do not fit a named-profession template — coaches, trainers, expert witnesses, certain media and creative service firms, translators, court reporters, mediators, and dozens of other classes. The form is typically written on a broad "professional services" definition tied to the scheduled services listed on the declarations page.
Errors & Omissions application
Our E&O application is the standard professional liability submission used to quote across the full range of professions and classes above. Complete the application, return it to us, and we will place a submission with the appropriate carrier panel for your sector.
The application gathers information on the applicant's operations, ownership structure, professional services rendered, revenue profile, the five largest client engagements over the past three years, use of subcontractors, contractual practices, employee professional profile, current and requested coverage, and any prior claims or circumstances. Have your sample client engagement letter and your firm's CV ready before starting; for firms requesting limits above $1,000,000, the standard client contract is a required attachment. For firms exceeding $7,000,000 in revenue (or requesting limits above $3,000,000), the most recent annual financial statement is required as well. Email completed applications to Underwriting@SuretyOne.com or fax to 919-834-7039.
The claims-made trigger and the retroactive date
Professional liability is almost always written on a claims-made-and-reported basis. The policy in force when the claim is made (and reported to the insurer) is the policy that responds — not the policy in force when the underlying error or omission occurred. This makes two dates uniquely important on every E&O renewal:
The retroactive date establishes the earliest covered conduct. Conduct that occurred before the retroactive date is excluded from coverage. Maintaining a "full prior acts" retroactive date — meaning no retroactive date limitation — is the most valuable structural feature of any mature E&O placement and should not be sacrificed for premium savings.
The extended reporting period (tail) allows the insured to report claims after policy expiration for conduct that occurred before expiration. Standard tails range from 30 days to several years; "unlimited" tails are available in some forms and are essential when an insured retires, sells the practice, or otherwise discontinues operations.
Defense — duty to defend or reimbursement
E&O forms come in two defense structures. Duty to defend forms put control of the defense (including counsel selection) in the carrier's hands. Reimbursement forms (sometimes called "indemnity only") allow the insured to select counsel and direct the defense, with reimbursement subject to insurer rate review and consent on material strategic decisions. Larger firms and firms with established defense counsel typically prefer reimbursement for control; smaller firms typically prefer duty-to-defend for cost and simplicity. The choice is significant and should be made deliberately.
Common questions
Does general liability cover professional services?
Generally no. Standard CGL policies contain a "professional services" exclusion that strips coverage for claims arising from the rendering of professional services. The exclusion is broad and is the single largest reason general liability is not a substitute for E&O. Buyers who learn this on a first claim learn it expensively.
What is "tech E&O" and how does it differ?
Tech E&O is a combined form designed for technology services and software companies, combining professional liability with cyber liability in a single coordinated policy. The structure addresses both the failure-of-the-product exposure (which is professional liability) and the breach-of-the-network exposure (which is cyber), with internal coordination of limits, retentions, and exclusions. For any technology business, tech E&O is the standard structure; separate cyber and separate E&O is rarely the right answer.
How does the retention work?
The retention applies to each claim and is typically inclusive of both defense costs and indemnity. Common ranges run from $1,000 for very small practices to $250,000 or more for large accounts. Retentions can vary by claim type, by class of service, and by named individual (some firms carry a separate retention for claims naming the senior principal).
What is a "knowledge" or "prior-acts" exclusion?
Every claims-made policy excludes claims arising from circumstances the insured knew about (or reasonably should have known about) before the policy's inception. The application's "circumstances giving rise to a claim" question is the disclosure mechanism. Disclosing known circumstances does not always preserve coverage for the eventual claim — the carrier may exclude that specific matter by endorsement — but failing to disclose typically forfeits all coverage for that matter and creates a separate rescission risk on the entire policy.
Does the policy cover regulatory and disciplinary proceedings?
Defense of regulatory and licensing-board proceedings is typically covered by endorsement, often with a separate sub-limit. The underlying disciplinary fines or penalties are usually not insurable as a matter of public policy. For licensed professionals (lawyers, doctors, CPAs, engineers, architects), the disciplinary-defense endorsement is essential and inexpensive.
The most expensive words in a professional services contract are "industry standard." Most E&O claims turn on what the standard was, who proved it, and whether the insured's deliverable can be defended against it. Document the standard. Document the deliverable. Buy the insurance for everything that goes wrong in between.
Speak to an underwriter
Profession-specific E&O placement is a structured conversation. Call (800) 373-2804 and we will identify the right form, the right carrier panel, and the right structure for your practice.