Errors and Omissions Insurance for Accountants: Who Needs What

Errors and omissions insurance for accountants (usually sold as "accountants professional liability") pays for your legal defense and any settlement when a client says your work cost them money. That could be a missed filing deadline, a botched return, a wrong payroll number or advice that went sideways. No federal law makes you carry it, but most bookkeepers, tax preparers and CPA firms with outside clients need it. How much you need, and what else goes with it, depends on how your practice is set up.

Is E&O required for accountants, or just a smart idea?

For most accountants, it isn't legally required. The IRS controls who can prepare returns through the preparer tax identification number (PTIN), the ID paid preparers put on the returns they sign. According to the IRS, anyone who prepares or assists in preparing federal tax returns for compensation must have a valid PTIN, and the Taxpayer Advocate Service points out that you must renew your PTIN every year. Neither page mentions insurance.

State boards of accountancy handle CPA licenses and firm registration, and many also require peer review, an outside check of a firm's audit and accounting work. Ohio's accountancy law, for example, lets a brand-new firm register if it will complete a peer review acceptable to the board within eighteen months of initial registration. But peer review checks the quality of your work. It won't pay a client who sues you. Rules on firm structure and insurance vary by state, so talk to your own board before you form an LLP or professional corporation.

The profession's own stance is clear. The AICPA's own insurance program says CPAs require professional liability insurance to cover claims that may arise from tax, bookkeeping, or other services often perceived to be low risk. In practice, though, the push usually comes from clients. Business clients, lenders and larger companies that hire outside accountants sometimes write an insurance requirement right into the engagement. If you do general consulting work too, the guide on what client contracts require for E&O covers that side.

Which accounting setup are you? Use this to size your coverage

Your title matters less than what you sign, who relies on your numbers and whose data sits on your laptop. A seasonal preparer doing 1040s from a spare bedroom faces different risks than a three-partner firm issuing reviewed financial statements to a client's bank.

Insurers sort firms by size and revenue, so your setup also determines which plans you can apply for. The AICPA program, for instance, describes its CPA Value Plan as for firms with three or fewer professionals, including owners, at least one licensed CPA, and revenue under $400,000, with a separate plan for bigger firms. Other insurers draw their own lines, but they all ask the same basics: how many professionals you have, what you bill and what kind of work brings that revenue in.

Where accountants' E&O claims actually come from

Most claims against accountants boil down to a client who lost money and thinks you caused it. The AICPA program's FAQ lists the services its plan covers, including tax preparation and planning, accounting services, business advice and audit work, plus management advisory and IT services. That list also works as a map of where accountants get sued.

Tax work produces the most familiar claims. A client gets an IRS notice two years after you filed, owes back tax plus penalties and interest, and blames you. Sometimes they're right. Sometimes they never gave you the brokerage statement. Either way, a policy pays for your defense, and that matters, because proving a client withheld documents isn't cheap either. Hiscox notes the coverage also helps when clients do not understand or accurately follow your advice.

Bookkeeping claims tend to be quieter, but they add up. A missed quarterly payroll deposit, a vendor paid twice or a reconciliation that masked a growing cash problem can all end in a demand letter. Attest work (compilations, reviews and audits) brings a different kind of claimant. A bank that lent money based on statements you prepared may come after you, even though it was never your client.

The gap people most often miss is assuming some other policy will step in. The National Association of Enrolled Agents warns that many tax preparers and enrolled agents believe their general liability insurance or business owner's policy (BOP) covers professional mistakes. General liability covers bodily injury and property damage. A wrong number on a return is neither one.

E&O has limits of its own. Policies commonly exclude fraud or intentional wrongdoing, fines or penalties assessed directly against you, and work outside the services you listed on your application. If you've quietly started offering investment advice or serving as a trustee, read those exclusions carefully, since those services are often treated differently.

Claims-made timing: the trap that catches accountants

Nearly every accountants E&O policy is written on a claims-made basis. That means the policy in force when the claim is made is the one that responds, as long as the work happened after your retroactive date (the earliest date of work the policy will cover). Tax claims often surface years after filing, when an audit letter finally shows up, so timing matters more for accountants than for most professions.

Three moments cause most of the trouble. The first is switching insurers: if your new policy doesn't keep your original retroactive date, years of past returns can end up uninsured. The second is a lapse. Even a short gap between policies can leave claims that arrive in that window with nowhere to go. The third is retiring or selling the practice.

That last one is where tail coverage comes in. IRMI defines tail coverage as a feature that permits an insured to report claims that are made against the insured after a policy has expired or been canceled, as long as the mistake happened while the policy was active. You'll pay extra premium for it. IRMI also notes that tail coverage usually lasts a limited time, "generally 1 year," and that buying it doesn't reset your aggregate limit. Because tax claims can surface long after filing, ask about longer tail options before you close the practice, not after.

The other policies that sit next to E&O

E&O covers your professional work, but most accounting practices need a few other policies around it. The Hartford's tax preparer page lists the common ones as a Business Owner's Policy (BOP), Cyber Insurance, Professional Liability and valuable papers and records coverage.

Cyber insurance deserves the closest look. Your files hold Social Security numbers, bank routing numbers and W-2s for entire families, which makes an accounting practice an obvious target for thieves. A breach can mean notification costs, credit monitoring for clients, forensic work and lost billable hours right in the middle of tax season. Some E&O policies include a little privacy or cyber coverage. Many don't, which is why insurers sell cyber as a standalone policy.

General liability, often bundled with property coverage in a BOP, matters more if clients visit your office or you work on site at their businesses. Valuable papers coverage pays to rebuild client records lost in a fire or flood, still a real risk for firms that keep paper files. Once you hire staff, look into workers' compensation under your state's rules and ask about employment practices liability, which covers claims like wrongful termination or harassment. If you're growing a broader advisory business, the consulting business insurance guide walks through the extra layers.

What to ask an agent or check in the policy before you sign

Engagement letters and insurance go hand in hand. Insurers and brokers push engagement letters because a clear scope of work is your first line of defense in a dispute, and some programs offer risk management resources such as engagement letter templates. Get your engagement letters in shape, then bring these questions to a licensed agent:

• Which of my services are covered as written: tax, bookkeeping, payroll, compilations, reviews, audits, financial planning, advisory?
• Is the policy claims-made, and what's my retroactive date? Will it carry over if I switch insurers?
• Do defense costs come out of the policy limit, or are they paid on top of it?
• What's the deductible, and does it apply to defense costs or only to damages?
• How does the policy handle IRS penalties and interest a client blames on me?
• Does it cover claims from third parties, like a lender who relied on statements I prepared?
• Are employees, former partners and 1099 contractors covered?
• Is any cyber or privacy coverage included, and what's the sublimit?
• What tail coverage options are there if I retire, sell or merge, and how long can the reporting period run?
• Does the insurer need my consent before settling a claim?

Fill out the application honestly and completely, especially the questions about the services you provide and any past client complaints. A wrong answer there is one of the easiest ways to lose coverage right when you need it. If a client contract names a specific limit or asks for a certificate of insurance, get the policy in place before you sign the engagement, not after the first letter from the client's lawyer. For more guides on insurance for independent professionals, see the consultants and freelancers section.