Many small business owners wonder, “What is Professional Liability insurance?” This type of insurance is maybe best summarized by another name that’s often used for it: Errors and Omissions insurance (or E&O insurance). A Professional Liability insurance definition would say it’s a type of small business insurance coverage that protects you from financial consequences if a client accuses you of not living up to the accepted standards and best practices of your profession.
What is Professional Liability?
The definition of Professional Liability is that it refers to the risk involved in providing services to clients. If you make a mistake that damages a client financially, you may face Professional Liability, meaning they might sue you. When asking, “What is Professional Liability?” it is helpful to look at the standard of care expected in your field.
Professional Liability insurance can protect you if a client accuses your company of:
What does Professional Liability insurance cover?
Professional Liability cover protects your business from financial loss resulting from mistakes in the services you provide. It generally covers legal defense costs, settlements, and judgments related to claims of professional negligence or inaccurate advice. Even if a claim is ultimately proven to be baseless, having robust Professional Liability cover helps manage the significant costs associated with a legal defense.
What does Professional Liability insurance not cover?
While this policy is comprehensive for service-related errors, it typically does not cover physical injuries, property damage, or intentional acts of wrongdoing. It also excludes claims related to workers' compensation and employment practices.
For protection against accidents or employee injuries, you should look into separate policies like General Liability or workers' compensation insurance.
How Professional Liability insurance works
Professional Liability insurance policies are designed to provide a financial safety net when a client dispute occurs. A client might say that the advice you gave was incorrect or a deliverable you provided contained errors and the issue caused them a financial loss. These and other examples of Professional Liability claims make it clear how important carrying Professional Liability insurance is.
Once a claim is filed, the insurer typically coordinates the defense and works toward a resolution based on the specific circumstances of the incident. Professional Liability insurance policies provide essential protection, so maintaining continuous coverage is critical.
How much does Professional Liability insurance cost?
We’ve answered the question, “What is Professional Liability insurance ?” Now, let’s look at how much it costs. Professional Liability insurance policies from biBerk start at around $300 and can go up into the thousands. Your Professional Liability insurance cost (which you can get in a fast online quote) is based on things like your industry, the level of coverage you choose, how long you’ve been in business, how many employees you have, your annual revenue, and the policy limits you need.
Understanding your Professional Liability insurance cost helps you budget for essential protection. Many factors influence the final Professional Liability insurance cost, so getting a quote is the best way to see your specific rate.
A trusted provider of Professional Liability insurance
As a trusted name in insurance, biBerk provides Professional Liability insurance for small businesses that owners can rely on, and also that they can afford. We insure your small business directly, without middlemen or insurance brokers. As a result, we pass significant savings on to you—up to 20% compared to other insurance companies.
Plus, we're part of the Berkshire Hathaway Insurance Group with millions of satisfied customers, a proven claims process, more than 75 years of insurance experience, and $62 billion in claims in 2025. So, you know you can count on us if an incident occurs.
Who needs liability insurance for professionals?
Any business that provides expert advice or specialized services to clients should consider this coverage. This includes professionals like consultants, accountants, architects, and technology service providers. Many clients also require proof of this insurance before they will sign a contract or begin a project with your company. Ultimately, liability insurance for professionals is essential if your business involves advising clients.
For entrepreneurs building a business from the ground up, establishing a professional foundation includes preparing for the unique risks inherent in service-based work. It also involves asking the critical question, “What is Professional Liability?”
Even in a company's earliest days, small errors or unmet client expectations can lead to significant disputes. Gaining a clear understanding of how Professional Liability protects your specific services—and how it differs from standard General Liability—allows you to approach new client agreements with the confidence that you are well-prepared for any challenges.
Why does Professional Liability insurance matter?
A single mistake or even a false accusation of negligence can result in a lawsuit that threatens your company’s financial stability. Having a policy in place ensures that your business assets are protected. Additionally, carrying coverage demonstrates to your clients that you’re a responsible professional who stands behind the quality of your work.
From the perspective of a client, hiring a provider with this coverage is a key way to protect your financial investment in a project. Insured professionals demonstrate a higher level of accountability and a more disciplined approach to their business operations. This protection works in tandem with your service contracts to address potential disputes, providing peace of mind that there is a safety net in place if a project fails to meet the agreed-upon standards or even if a client simply makes that claim.
What are the risks of not having Professional Liability insurance?
Operating without this coverage means your company must pay for legal defense costs and any awarded damages out of pocket. For many small businesses, the financial burden of a single lawsuit—even a meritless one—is enough to lead to bankruptcy. Additionally, lacking proof of insurance can prevent you from securing contracts with clients who require a Certificate of Insurance (COI) before starting a project.
Operations managers can use Professional Liability requirements to strengthen vendor risk controls and facilitate a more rigorous selection process. By verifying coverage during the onboarding of third-party providers, you reinforce your existing contractual safeguards and protect the organization from external errors. At the end of the day, a firm grasp of these insurance requirements helps streamline complex risk management decisions and ensures compliance across all service partnerships.
Professional Liability vs General Liability insurance
The main difference between Professional Liability and General Liability insurance lies in the type of risk being addressed by the policy. General Liability handles things like "slip and fall" accidents or physical damage to a client's property, while Professional Liability focuses on financial harm caused by your professional expertise or advice. Most small businesses find that carrying both policies provides the most complete safety net for their operations.
Professional Liability insurance FAQ
Our licensed insurance experts are always happy to assist you, but below are answers to questions we’re frequently asked about Professional Liability insurance. Keep in mind that biBerk provides comprehensive coverage options for small businesses, so if you have questions about other policies (Workers’ Compensation, General Liability, or others), our experts can tell you about those as well.
What is Professional Liability?
Generally speaking, Professional Liability is the legal obligation you face if you make a mistake in your work.
Are Professional Liability and Errors and Omissions (E&O) insurance the same thing?
Yes, they are. The two terms tend to be used interchangeably.
What is a retroactive date?
A retroactive date is a date agreed on by you and your current insurance company. Any work done by you before the retroactive date will not be covered under your current policy or this policy. You likely will find this date in your current policy documents or from your current agent. For example, let’s say your policy was active beginning July 1 of last year with a retroactive date of January 1 of last year. If work you did in March of last year results in a Professional Liability lawsuit, it may be covered since the work took place after the retroactive date.
What is Professional Liability insurance?
Professional Liability insurance (also called Errors and Omissions insurance) can cover your small business if a client accuses you of making a mistake (an error) or failing to do something (an omission). The cost of defending a claim can be covered even if the claim proves to be baseless.
What does Professional Liability insurance cost?
The cost of Professional Liability insurance depends on factors like your industry, years in business, and number of employees, as well as the level of coverage you select. Our Professional Liability insurance policies start around $300 per year and go up from there.
Who needs Professional Liability insurance?
Like the cost of Professional Liability insurance, whether you need it and the amount you should have is based on many factors. Our licensed insurance experts can help you assess and address your needs.
What is the minimum amount of liability insurance required?
The minimum requirement for individual Professional Liability insurance depends on your type of business and your location. We can provide guidance on the amount you need. In some cases, the minimum requirement may be specified in contracts you have with your clients.
Does my business need Errors and Omissions insurance?
Errors and Omissions insurance is another name for Professional Liability insurance. If your business provides professional advice or services, it’s a good idea to have Errors and Omissions insurance and it may be required by law.
How is Professional Liability insurance different from General Liability insurance?
General Liability insurance covers accidents that cause damages such as bodily injury or property damage. Professional Liability insurance addresses claims for financial losses from a client that you made a mistake or failed to do something you were obligated to do.
Does biBerk offer Professional Liability insurance in my state?
Yes, we provide coverage in all 50 states.
Does Professional Liability insurance cover my company even if a lawsuit is baseless?
Yes, even if there are no grounds for a claim, your policy can provide protection.
About the Author
Adam Pevarnik
Chief Underwriting Officer
Adam Pevarnik leads underwriting strategy and product development for biBerk, ensuring pricing and guidelines align with the company’s mission to serve small businesses effectively. An actuary by training with Berkshire Hathaway experience across underwriting, product, and reinsurance roles, he brings analytical rigor to content on risk selection and portfolio performance. Adam’s articles offer actionable insights into balancing underwriting discipline with insurtech innovations.