Professional Liability / E&O Insurance for Business Consultants

For business consultants, Professional Liability Insurance and Errors & Omissions (E&O) Insurance generally refer to the same type of coverage. You’re not choosing between two products or buying both — when you see either term on this site, we mean the same policy.

This coverage is designed to help respond to certain covered claims alleging an error, omission, or negligent act in the professional consulting advice or services you provided — subject to the policy’s terms, conditions, and exclusions.

A common scenario: a consultant delivers a recommendation — a pricing change, a staffing plan, a go-to-market strategy — the client implements it, and results fall short. The client alleges the advice was negligent or that key risks weren’t disclosed. Professional Liability / E&O is the coverage designed to respond to a covered claim of that kind, depending on the circumstances and the coverage selected.

It is not a guarantee that every claim is covered, and it does not mean every allegation results in a payout. Coverage is always subject to the specific terms, conditions, and exclusions of the policy issued. Notably, coverage is not designed to guarantee a business outcome or a client’s return on investment, and disputes over promised financial performance may fall outside what a policy is intended to address.

Professional Liability / E&O for consultants is typically written on a claims-made basis, which works differently from the occurrence-based coverage many people are used to. In simple terms, a claims-made policy generally responds to claims made against you during the policy period (or an applicable extended reporting period) for covered acts that occurred on or after your retroactive date.

That makes your retroactive date and continuous coverage history genuinely important. If you let coverage lapse and later restart it, work performed during the gap may not be eligible for coverage under the new policy. This is one of the most common points of confusion for consultants switching carriers or agencies — ask your agent directly about how your retroactive date is being handled.

Coverage generally follows paid consulting engagements — whether billed hourly, as a flat project fee, or on retainer. Written statements of work, engagement letters, and signed proposals all help document the scope of advice given, which can matter significantly if a claim is later filed. We generally recommend consultants keep engagement letters on file even for informal or short-term projects.

General Liability is a separate coverage designed for eligible third-party bodily injury and property damage claims connected to your business operations — not the quality of your advice. See our General Liability page for how the two coverages divide the risk.

There’s no single right limit for every consulting practice — the appropriate amount depends on the size of the engagements you typically take on, the industries you serve, and what your client contracts specifically require. A solo consultant advising small local businesses on a project basis has a different risk profile than a multi-consultant firm advising large enterprise clients on decisions worth millions of dollars.

Many consultants start with a $1,000,000 per occurrence / $2,000,000 aggregate limit, since it’s the most commonly requested baseline in client contracts, then adjust upward as their typical engagement size grows. See our Insurance Requirements page for how to read a specific client’s limit request.