Errors and Omissions Insurance Protects You When Your Work Causes Financial Loss

Errors and omissions (E&O) insurance covers the cost of defending yourself and paying damages if a client sues you for mistakes, negligence, or failure to deliver promised work. It is not about property damage or bodily injury—those are covered by general liability. E&O is specifically for situations where your professional judgment or execution went wrong and the client lost money because of it.

The insurance pays for your legal defense, settlements, and judgments up to your policy limit. It applies to work you have already completed and billed for, as well as work you failed to complete. Most policies cover claims made during the policy period, not just incidents that happened during it—meaning you can report a problem that surfaces months or years later, as long as you were insured when the work was done.

Who needs it depends on your profession. Consultants, accountants, architects, engineers, real estate agents, insurance brokers, and software developers are the most common buyers. If you give information or deliver a service where a mistake costs the client money, E&O is worth examining.

Key Takeaways

  • E&O insurance covers your legal defense and damages when a client sues for mistakes or negligence in your professional work, not for injuries or property damage.
  • Most policies use claims-made coverage, meaning the claim must be reported during the policy period even if the work was done years earlier.
  • Costs vary widely by profession, business size, and claims history—a solo consultant might pay $500 to $2,000 per year, while a larger firm could pay $5,000 to $15,000 or more.
  • Tail coverage (also called run-off insurance) extends protection after you stop working or change insurers, and is often required by clients or lenders.
  • Policy limits, deductibles, and exclusions differ significantly between carriers, so comparing quotes from multiple insurers is necessary to find what fits your actual risk.

How E&O Coverage Works When a Client Sues

When a client files a claim, your insurer assigns a defense attorney (or reimburses you for one you hire). The insurer pays legal fees as they accrue, separate from your policy limit. If the case settles or goes to judgment, the settlement or award comes out of your limit. Once you hit your limit, the insurer stops paying.

Most policies have a per-claim limit and an aggregate limit. The per-claim limit is what the insurer will pay for a single lawsuit. The aggregate is the total they will pay across all claims in one policy year. If you have a $1 million per-claim limit and a $2 million aggregate, and you settle one case for $1 million, you have $1 million left in aggregate for the rest of the year.

You also pay a deductible—typically $500 to $5,000—out of your own pocket before the insurer pays anything. Some policies let you choose a higher deductible in exchange for a lower premium. A few policies waive the deductible for defense costs, meaning the insurer pays the lawyer when ready and you only pay the deductible if there is a settlement or judgment.

What E&O Does Not Cover

E&O does not cover bodily injury or property damage—those belong to general liability. It also does not cover criminal acts, fraud, or dishonesty, even if a client claims you acted that way. If you intentionally misrepresent your qualifications or deliberately ignore a client's instructions, the insurer can deny the claim.

Most policies exclude contractual liability—meaning if you signed a contract promising to pay damages in a certain way, E&O will not cover it. They also typically exclude prior acts, so work you did before the policy started is not covered unless you buy a retroactive date endorsement.

Employment-related claims (wrongful termination, discrimination, harassment) are not covered by E&O; those require employment practices liability insurance (EPLI). Cyber liability (data breaches, ransomware) is also separate. If your work involves handling money in trust, you may need fidelity coverage or crime insurance on top of E&O.

Costs Vary by Profession, Firm Size, and Risk

Premium costs depend on what you do, how many people work for you, your revenue, and your claims history. A solo management consultant with no prior claims might pay $600 to $1,500 per year for $1 million in coverage. An accounting firm with five employees and $500,000 in annual revenue could pay $2,000 to $5,000. A larger architecture or engineering firm might pay $10,000 to $30,000 or more.

Insurers also ask about your underwriting practices—whether you document your work, get client sign-offs, maintain errors and omissions procedures, and have professional licenses or certifications. Firms with strong documentation and no claims history get better rates. A single prior claim can double or triple your premium, and some insurers will decline to cover you if your claims history is poor.

Deductibles, policy limits, and coverage scope all affect price. A $5,000 deductible costs less than a $1,000 deductible. A $500,000 limit costs less than a $2 million limit. Some insurers charge extra for coverage of specific services (like informed witness work or regulatory defense), while others bundle them in.

Tail Coverage Protects You After You Stop Working or Switch Insurers

Tail coverage (also called run-off insurance or extended reporting period) extends your protection after your policy ends. It covers claims that arise from work you did while insured, even if the claim is reported after the policy expires. Without tail coverage, a problem that surfaces six months after you close your business or leave a firm is not covered.

Tail coverage is expensive—typically 150% to 300% of your annual premium for a one-time payment, depending on how long you want the tail to last (usually one to three years). Some policies include a free tail period (often 30 or 60 days) if the insurer cancels or doesn't renew. If you cancel voluntarily, you usually have to buy tail coverage separately.

Many clients and lenders require proof of tail coverage before they will work with you or approve a loan. If you are selling your business, the buyer often requires you to maintain tail coverage for several years after the sale. Check your client contracts and loan agreements to see if tail coverage is mandatory.

How to Compare Policies and Choose Coverage Limits

Get quotes from at least three insurers that specialize in your profession. Generic business insurance brokers often do not understand E&O well enough to find you the right fit. Look for carriers that have experience with your specific field—an insurer who writes a lot of software developer policies will understand your risks better than one who mainly covers consultants.

When comparing quotes, look at the per-claim limit, aggregate limit, deductible, and what is excluded. A $1 million per-claim limit sounds good until you realize the aggregate is also $1 million, meaning one large claim exhausts your coverage for the year. Ask whether defense costs count against your limit or are paid separately. Ask what prior acts are covered and whether you can add a retroactive date if you switch insurers.

Choose a limit based on your largest potential exposure. If a mistake could cost a client $500,000, a $250,000 policy leaves you personally liable for the rest. Most professionals carry $1 million to $2 million in per-claim limits. Larger firms or those in high-risk fields (architecture, engineering, financial advisory) often carry $5 million or more.

Renewal, Claims, and Reporting Requirements

E&O policies typically renew annually. When you renew, the insurer may ask about claims or potential claims from the past year. You are required to report any incident that might lead to a claim, even if the client has not sued yet. Failing to report a known problem can give the insurer grounds to deny a later claim.

If a client threatens to sue or sends a demand letter, report it to your insurer when ready—do not wait to see if they actually file. Most policies require notice within a set time frame (often 30 to 90 days). Delaying notification can result in denial of coverage.

Keep records of all client work, communications, and sign-offs. If a claim does arise, your documentation is your best defense. Insurers also use your records to assess whether you have reasonable procedures in place, which affects your renewal premium.

Frequently Asked Questions

Does E&O insurance cover me if I work as an independent contractor for a larger firm?

It depends on your contract. Some firms require contractors to carry their own E&O and name the firm as an additional insured. Others provide coverage under their policy. Check your contract and ask your broker whether you need your own policy or whether the firm's coverage extends to you.

What happens if I get sued for something that happened before my policy started?

Standard E&O policies do not cover prior acts unless you buy a retroactive date endorsement. When you switch insurers, ask the new carrier whether they will add a retroactive date covering your work at the previous firm. Some will; others will not. This is a key reason to shop carefully when changing insurers.

Can I get E&O insurance if I have had claims before?

Yes, but your premium will be higher and some insurers may decline to cover you. Carriers look at the number of claims, the amounts paid, and whether the claims were your fault or the client's. One small claim is usually manageable; multiple large claims or claims involving fraud make coverage harder to find and more expensive.

Is E&O the same as professional liability insurance?

Professional liability and errors and omissions are often used interchangeably, but professional liability is sometimes a broader term that includes E&O plus other coverages like employment practices liability or cyber liability. When shopping, ask the insurer exactly what is included in their "professional liability" package.

Do I need E&O if I have general liability insurance?

General liability covers bodily injury and property damage, not mistakes in your work. If your business involves giving information, designing something, or delivering a service where an error costs money, you need E&O in addition to general liability. They cover different risks and are not substitutes for each other.