Errors and omissions insurance. Professional liability insurance. Malpractice insurance. If you've been searching for coverage that protects your business from claims of professional negligence, you've probably encountered all three terms and wondered whether they refer to different policies or the same one.
The short answer is that they refer to the same underlying coverage. The longer answer is that the name used depends on the industry, the type of claim involved, and in one important case, the scope of what the policy can cover. Getting clear on the distinctions helps you identify the right policy for your profession, confirm what's actually covered, and avoid gaps that a general liability policy won't fill.
What All Three Have in Common
Before the distinctions, the common ground. Professional liability, E&O, and malpractice insurance all respond to the same basic risk: a client or patient claims your professional work caused them harm, and you need to defend yourself.
The Insurance Information Institute describes professional liability insurance as covering negligence, misrepresentation, violation of good faith and fair dealing, and inaccurate advice: claims that a general liability policy does not cover. That gap matters. A general liability policy responds to physical injury or property damage. It does not respond to a client who loses money because of your advice, misses a deadline because of your error, or suffers harm because of a professional mistake. For those claims, you need a professional liability policy under whatever name your industry uses.
All three coverage types typically include:
- Legal defense costs, whether or not the claim has merit
- Attorney fees and court costs
- Settlements and judgments up to the policy limit
These policies are written to defend you even when the claim is groundless, subject to their own terms. That matters because the cost of defending a frivolous professional negligence lawsuit can run well into six figures before a judge dismisses it. On most professional liability forms those defense costs come out of your limit rather than sitting on top of it, so a long defense leaves less to settle with.
Nearly all of these policies are also claims-made. The policy has to be in force when the claim is made against you, not when you did the work, and a retroactive date controls how far back your prior work is covered. If you switch carriers or close the business, tail coverage is what keeps that prior work protected.
Professional Liability Insurance: The Umbrella Term
Professional liability is the broadest term. It covers any professional who provides advice, services, or expertise to clients and could be held responsible if that work causes a client financial harm.
Consultants, architects, engineers, accountants, IT professionals, and marketing agencies all typically buy professional liability insurance. The risk being insured is financial: a client claims your work, advice, or failure to perform caused them a monetary loss. Physical injury is generally excluded from standard professional liability policies.
Common triggers for a professional liability claim:
| Trigger | Example |
|---|---|
| Negligent advice | A consultant recommends a strategy that loses the client a major contract |
| Missed deadline | A designer delivers late, causing a client to miss a product launch |
| Misrepresentation | An IT firm overstates the capabilities of a system it implements |
| Failure to perform | An agency fails to deliver contracted services on time and to specification |
| Breach of contract | A consultant's negligent work departs from agreed scope and damages the client. A pure contract dispute is usually excluded |
If your business provides any form of professional service or advice, and a client could sue you for the financial consequences of a mistake, you need some form of professional liability coverage. The question is what your industry calls it.
E&O Insurance: Professional Liability for Specific Industries
Errors and omissions insurance is professional liability insurance under a different name. The coverage answers the same risk. The term E&O is used primarily in industries where the specific nature of the risk involves errors in documentation, calculations, advice, or transactions rather than creative or design work.
Industries that use the E&O term most commonly include insurance brokers and agents, real estate agents and brokers, financial advisors, mortgage brokers, title companies, and technology service providers. If you're an insurance broker and a policy you placed didn't cover a client's claim the way they expected, that's an E&O claim. If you're a real estate agent who provided incorrect zoning information that affected a transaction, that's an E&O claim.
The coverage responds to the same categories of professional negligence as a professional liability policy. The distinction is naming convention, not protection. A technology consultant might buy professional liability insurance; an insurance agent buys E&O. The forms underlying both respond to the same categories of claim, though there is no standard form and the exclusions written for an insurance agent differ from those written for a software firm.
Malpractice Insurance: Where Bodily Harm Enters the Picture
Malpractice insurance is where the distinction becomes substantive rather than just terminological.
Like professional liability and E&O, malpractice insurance responds to claims of professional negligence. The critical difference is scope: malpractice policies can cover claims involving bodily injury, physical harm, and in some cases death. Most professional liability and E&O policies exclude bodily injury claims. Malpractice policies are written to include them. Design professionals are the notable exception on the other side: an architect's or engineer's professional liability policy covers bodily injury and property damage caused by negligent design.
The Insurance Information Institute notes that medical malpractice insurance provides coverage for liability arising from disputed services that result in patient injury or death, and that a majority of American doctors face at least one malpractice lawsuit during their career.
Malpractice insurance is most commonly associated with:
| Profession | Primary risk covered |
|---|---|
| Physicians and surgeons | Misdiagnosis, surgical errors, treatment complications |
| Nurses and allied health professionals | Medication errors, failure to monitor, assessment failures |
| Dentists | Procedural errors, nerve damage, infection from treatment |
| Therapists and counselors | Breach of duty of care, confidentiality violations |
| Attorneys | Missed deadlines, conflict of interest, procedural errors causing client loss |
| Pharmacists | Dispensing errors, incorrect dosage instructions |
Attorneys occupy an interesting middle position. Legal malpractice insurance functions more like a professional liability policy in that the primary harm is financial (a lost case, a missed filing deadline, a conflict of interest that damaged the client's position). But the term malpractice is used because the professional standard is high and the consequences of breach are serious.
One practical implication for healthcare professionals: a general liability policy will not respond to a patient injury claim stemming from treatment. The limited medical coverage a general liability form carries applies only to businesses that are not in the business of providing care. Medical malpractice is a standalone coverage requirement, not an add-on to a business owner's policy.
The Quick-Reference Summary
| Term | Who uses it | Covers bodily injury? | Required by law? |
|---|---|---|---|
| Professional liability | Consultants, architects, engineers, accountants, marketers | Usually not, except for design professionals | Sometimes (by contract or state law) |
| E&O | Insurance agents, real estate brokers, financial advisors, tech providers | No | In some states and for some license types, and commonly by carrier contract |
| Malpractice | Doctors, nurses, therapists, lawyers, dentists | Yes (for medical) | In a minority of states, and usually by hospital or payer contract |
What General Liability Doesn't Cover
This is the point most business owners miss. A general liability policy covers physical injury to third parties and damage to their property. It does not cover claims that your professional work, advice, or judgment caused a client financial or physical harm.
If a client slips and falls in your office, general liability responds. If a client loses money because of an error in your work, it does not. The two policies work alongside each other but cover entirely different claim categories. Running a service business with only a general liability policy and no professional liability, E&O, or malpractice coverage is a meaningful gap that a single client complaint can expose.
This guide is general information, not a coverage determination or legal advice. What your policy covers is governed by its own terms, conditions, and exclusions, and licensing requirements vary by state and profession.