What Is Professional Liability Insurance?
Professional liability insurance, also known as Errors & Omissions (E&O) insurance, covers claims that your professional advice, service, or work resulted in a financial loss for a client — even if the mistake was unintentional or you did nothing technically wrong. It covers what general liability insurance explicitly does not: financial harm from professional services, rather than physical injury or property damage.
Who Needs Professional Liability Insurance?
- Consultants and advisors: Business, financial, IT, and management consultants
- Accountants and bookkeepers: Anyone preparing financial statements or tax filings
- Designers and marketers: Web designers, graphic designers, and marketing agencies
- Real estate professionals: Agents and brokers giving property advice
- Insurance agents: Advising clients on coverage decisions
- Healthcare and legal professionals: Often required to carry E&O (sometimes called malpractice insurance) as a condition of licensure
Average Professional Liability Insurance Cost
| Profession | Annual E&O Cost |
|---|---|
| IT / Software consultant | $500-$1,500/yr |
| Marketing / Design agency | $500-$1,200/yr |
| Accountant / Bookkeeper | $600-$1,800/yr |
| Financial advisor | $1,000-$3,000/yr |
| Real estate agent | $400-$1,000/yr |
| Architect / Engineer | $2,000-$6,000/yr |
General Liability vs. Professional Liability
These two policies cover different types of claims, and most service businesses need both:
- General liability covers third-party physical injury or property damage — a client trips in your office, or you accidentally damage their equipment.
- Professional liability covers financial harm caused by your advice or work — you make an error in a client's tax filing that costs them money, or a design flaw causes a client's project to fail.
Frequently Asked Questions
Yes — freelancers who provide advice, designs, or professional services are exactly the businesses professional liability insurance is built for. A single client dispute over a missed deadline, an error, or dissatisfaction with deliverables can trigger a costly claim, and E&O coverage protects your personal assets from that risk.
They're essentially the same concept under different names. "Malpractice insurance" is typically used for licensed medical and legal professionals, while "professional liability" or "E&O" is the more general term used across other service industries like consulting, IT, and design.
Most small service businesses carry $1M per occurrence / $1M aggregate as a standard limit. Higher-risk professions or larger client contracts may require $2M or more — many client contracts will specify the minimum E&O limit required to work with them.