Professional liability insurance protects you when a client claims your services — advice, design, code, financial guidance, healthcare — caused them financial harm. General liability won’t cover these claims. E&O is the gap-filler for every service business. Without it, a single client lawsuit can exceed six figures in legal fees alone, regardless of whether you’re actually at fault.
What Professional Liability Covers
Professional liability insurance responds when a client alleges:
- Negligence: You failed to meet the professional standard of care in your field. A financial advisor gives advice that results in significant portfolio losses; a web developer delivers a site with security vulnerabilities that results in a data breach.
- Errors and omissions: You made a mistake or left something out. An accountant files a tax return with an error that triggers an audit and penalties; an architect specifies the wrong materials, causing construction problems.
- Breach of contract: You failed to deliver what you promised or didn’t meet specifications.
- Misrepresentation: A client claims you overstated your expertise or capabilities to win the business.
- Failure to deliver: You didn’t complete the work or delivered it late, causing the client financial loss.
What it covers when these claims happen:
- Your legal defense costs (the largest expense — defense can cost $50,000–$200,000 even for frivolous claims)
- Settlements and judgments up to policy limits
- Some policies cover regulatory defense costs
What Professional Liability Does NOT Cover
| Not Covered | Covered By |
|---|---|
| Physical injury to client | General liability |
| Your property damage | Commercial property |
| Client injury on your premises | General liability |
| Employee injuries | Workers’ compensation |
| Criminal acts | Nothing |
| Intentional wrongdoing | Nothing |
| Prior known incidents | Nothing |
Claims-Made vs. Occurrence Policies
Professional liability is almost always written on a claims-made basis — the policy covers claims made during the policy period, not incidents that occur during it.
This distinction matters enormously:
Occurrence policy (like GL): If a client gets hurt during 2024 while you had coverage, and sues you in 2026 when you’ve cancelled coverage, your 2024 policy still covers you.
Claims-made policy (like E&O): If a client makes a claim in 2026, you need an active policy in 2026 to be covered — even if the incident happened in 2024 when you had coverage.
Tail coverage (Extended Reporting Period): When you cancel a claims-made E&O policy, you can buy “tail coverage” that extends the reporting window — protecting you from claims that arise after you’ve cancelled the policy. Tail coverage typically costs 100–150% of your annual premium.
Retroactive date: When you first buy E&O coverage, the policy has a retroactive date — claims arising from work done before that date aren’t covered. Never let your coverage lapse without obtaining tail coverage.
Cost by Profession
| Profession | Typical Annual Premium ($1M limit) |
|---|---|
| IT consultant/developer | $800–$1,800 |
| Marketing/advertising agency | $700–$1,500 |
| Graphic designer | $500–$1,000 |
| Business consultant | $800–$2,000 |
| Financial advisor | $1,500–$4,000 |
| Accountant (small firm) | $1,500–$3,000 |
| Real estate agent | $600–$1,500 |
| Architect | $2,000–$5,000 |
| Civil engineer | $2,500–$6,000 |
| Attorney | $1,500–$5,000 |
| Physician (medical malpractice) | $10,000–$30,000+ |
Do You Need Both GL and E&O?
Most service businesses need both:
| Business Type | Need GL? | Need E&O? |
|---|---|---|
| Office-based consultant | Yes (client visits, landlord) | Yes (advice/deliverables) |
| IT services/developer | Yes (equipment, client site visits) | Yes (errors in code/systems) |
| Accountant | Yes | Yes |
| Contractor/trades | Yes (critical) | Sometimes |
| Pure product business | Yes | Rarely |
| Healthcare provider | Yes | Yes (malpractice) |
Many insurers sell combined GL + E&O policies, or a Business Owner’s Policy (BOP) that includes both. Get quotes for combined policies vs. separate — bundled coverage often saves 15–25%.
- General Liability Insurance — physical injury and property damage coverage
- Business Owner’s Policy — bundle GL and property at a discount
- Business Insurance Cost Guide — total annual cost by business type
- Business Insurance Hub — compare all policy types
The content on Wealthvieu is for informational purposes only and should not be considered financial, tax, or investment advice. Consult a qualified professional before making financial decisions. Full disclaimer · Editorial policy