The best insurance for accountants, CPAs and other accounting professionals is offered by The Hartford and ERGO NEXT.
MoneyGeek helps you compare the best accountant and CPA insurers, coverage types and costs, so you can find the protection your firm needs.
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Updated: September 16, 2026
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My analysis ranked these companies as the best small business insurers for accountants and CPAs:
Accountant and CPA business insurance can be deceptively complex since professional liability, cyber coverage and general liability all look straightforward until a claim reveals what your policy actually covers. My rankings are built on three things: what you'll actually pay, what happens when you need help and whether the coverage holds up against the risks accounting work creates. I scored each provider across affordability (50%), customer experience (30%) and coverage options (20%), weighted that way because premium cost determines what a solo practitioner or small firm can financially sustain, but it's rarely where the decision should end.
This is what made up my analysis of popular insurers, which was assisted (not run) by AI:
Lowest average monthly cost
BOP includes $1M professional liability
With in-house claims adjusters and agent
Buying and managing policies requires more interaction
No in-house commercial auto
Binding policies take longer than competitors
I recommend The Hartford for most accountants because it combines the lowest average cost with the broadest policy selection. It runs 32% below the average of every other provider I ranked, and that gap holds across firm sizes. The Hartford's business owner's policy (BOP) includes professional liability (most BOPs only bundle general liability and commercial property), eliminating the need for a separate E&O policy. It also offers cyber coverage with data breach and ransomware protection along with employment practices liability insurance (EPLI) for firms navigating seasonal hiring cycles.
However, policy changes need to go through an agent rather than a self-service portal, and quoting takes more back-and-forth than competitors. The Hartford also doesn't write commercial auto for most small accounting operations, so audit fieldwork travel will need a separate carrier.
Read Our Review: The Hartford Business Insurance Review
Quote to COI in roughly 10 minutes
Ranks first in customer experience for accountants
10% discount when adding professional liability
Professional liability lacks options for financial professionals
No accounting-specific agents for support
Cyber underwritten by Coalition, not in-house
ERGO NEXT is the right pick for accountants who value speed and simplicity over coverage depth. Backed by Munich Re and insuring over 750,000 businesses, it offers professional liability, general liability, BOP, workers' comp, commercial property and cyber for accounting practices. I had a bound policy with a downloadable COI in under 10 minutes without a single phone call. Its mobile app lets you pull COIs, adjust coverage and start claims at any hour, and a 10% discount applies when you stack professional liability onto an existing policy.
Where ERGO NEXT starts to fall short is with more complex practices. Professional liability caps at $1M per claim and $2M aggregate, which won't satisfy engagement contracts that call for higher limits. It also lacks broad form coverage and flexible reporting terms that firms doing audit or attest work need from their E&O policy. Cyber runs through Coalition rather than ERGO NEXT's own underwriting, adding a third party to one of accounting's most critical coverages.
Read Our Review: ERGO NEXT Business Insurance Review
Professional liability tailored specifically to accounting risks
Dedicated rep assigned on every claim
Monthly payments with zero installment fees
Narrow policy selection requires a second carrier
Higher-than-expected complaint volume with state regulators
Professional liability takes 2 to 5 days to bind
Hiscox is the strongest option for solo CPAs and small firms where professional liability is the primary concern. Its E&O policies are built around accounting risks like tax preparation errors, audit failures, missed filing deadlines and advisory missteps that cause a client financial harm. Coverage extends worldwide, which matters if your practice advises clients with international operations or your work product crosses state regulatory lines. Hiscox charges no installment fees on monthly payments and offers a 5% discount when you buy two or more products, both practical for a solo CPA managing uneven cash flow between tax seasons.
The gaps show up outside of E&O. Hiscox doesn't bundle coverage the way larger carriers do, so if you need workers' comp, commercial property or commercial auto alongside your professional liability, you're managing policies across multiple carriers. The application for professional liability also requires supplemental documentation about your services and client types, which means 2 to 5 business days to bind rather than minutes.
Read Our Review: Hiscox Business Insurance Review
The first policy most accounting firms need is professional liability, because your signed work (returns, audits, financial statements) creates claims exposure that can surface years after the engagement ends. Cyber insurance is next since your systems hold Social Security numbers, tax returns and financial records that the FTC Safeguards Rule requires you to protect regardless of firm size. Beyond those two, workers' comp, general liability, commercial property and other policies come into play as your practice grows and takes on more clients.
The table below summarizes the most common types of business insurance that accountants and CPAs need to meet requirements and cover financial risks.
Defense costs and settlements when a client or third party claims your work caused them financial harm | Every accounting professional should carry this before taking on clients | About 46% of accountants have admitted to mistakes resulting in financial losses, and average claim settlements exceed $180,000 before defense costs. | |
Costs from data breaches, ransomware attacks and regulatory penalties when client records are compromised | Any firm that stores client financial data electronically | Cyber attacks on U.S. financial companies rose 27% in 2024, and the FTC Safeguards Rule carries penalties up to $50,120 per violation for tax preparers. | |
Claims and legal costs when a client is injured at your office or you damage someone's property during a visit | If clients visit your office or you work at a client's location | Slip-and-fall claims from client visits are the most common GL trigger for accounting firms, and even a straightforward injury claim can generate five-figure costs. | |
An employee's medical bills and lost wages after a work injury, including repetitive strain from sustained computer use | When you hire your first employee, including part-time or seasonal tax preparers | Nearly 946,500 workers reported musculoskeletal disorders in 2023, and office workers are particularly susceptible to carpal tunnel during extended busy season hours. | |
Damage or loss to your office space, servers, workstations and client file systems from fire, theft or other covered events | If you lease or own office space or work from home with business equipment | Your landlord's policy covers the building, not your contents, and a single server failure or office fire can destroy years of client records and the equipment your practice depends on. | |
Injuries and vehicle or property damage from work-related driving to client offices, audit fieldwork or bank runs | If your firm owns vehicles or staff regularly use personal vehicles for business | Personal auto policies typically exclude business-use claims, so an accident on the way to a client meeting leaves your firm fully exposed. | |
Combines general liability with coverage for property kept at a fixed location, often at a lower cost than buying each separately | Small practices that need both GL and property coverage | A BOP protects against both third-party liability claims and losses to your own property in a single policy, simplifying coverage and often reducing total premium. | |
Extra liability protection after your primary policy reaches its limit | A contract or client engagement requires limits above your base policies | A disputed audit opinion relied on by lenders or investors can generate claims that exceed standard $1M or $2M primary limits. | |
Accounting firms face a risk most small businesses don't because your liability extends to people you never met. A lender who relied on your audit opinion, an investor who acted on a financial statement or an IRS agent reviewing a return you signed can all generate claims years after the work was done. While professional liability costs roughly $70 per month, a single uninsured claim can easily reach six figures in settlement and defense costs. One mid-sized firm's data breach in 2024 led to five class-action lawsuits after over 216,000 individuals were notified, a cost that would be existential without coverage.
Accountant business insurance costs for a small practice with 1 to 4 employees average $59 per month across all coverage types, with cyber insurance at $93 per month being the most expensive and workers' comp at $15 per month being the least. What you actually pay depends on your credential type, whether you do audit or attest work, the size of your client base and how much sensitive data your systems hold.
Here's an overview of costs for common coverage types:
What Are These Costs Based On?
The costs presented are for a 1 to 4-person business aggregated across all 50 states plus D.C. Assumptions by coverage type are as follows.
Our business insurance calculator below can give you a more tailored estimate based on your practice details. It also connects you directly with a provider match when you're ready to get quotes.
Select your state and industry to view average business insurance premiums in your area. Rates are calculated based on a business with 5 employees and $500,000 in annual revenue.
I've outlined the buying process below step by step. If you want something to take with you while gathering quotes, download the accountant business insurance buying worksheet to keep everything organized across providers.
Your starting point is whatever body governs your credential. Some state boards mandate professional liability minimums for licensed CPA firms, and others don't but your clients will. Pull the insurance section from your most recent engagement letter and note every coverage type, limit and endorsement it specifies. If a client requires additional insured status, that has to be added through your carrier as a policy endorsement. Handing them a certificate of insurance (COI) alone only proves coverage exists, it doesn't extend it.
Read More: Business Insurance Requirements
Think through specific scenarios your firm could face and test which policy would actually pay. Say a former client's lender sues your firm over an audit opinion you signed two years ago. General liability won't touch that because no one was physically hurt, but a professional liability policy with an adequate retroactive date would. Do this for every meaningful risk in your practice, from a ransomware attack encrypting client files to an employee developing carpal tunnel during tax season, and flag anything without a clear policy match.
Your limits need to account for the worst claim your practice could realistically face, not what firms your size typically carry. A bookkeeper serving sole proprietors has a very different ceiling than a CPA whose audit opinions get relied on by lenders and investors. If your work product influences financial decisions worth hundreds of thousands of dollars, a $1M per occurrence limit may not be enough.
Read More: How Much Business Insurance Do I Need?
Some carriers exclude attest work from their professional liability policies entirely. Others will cover it but price cyber poorly for the volume of sensitive data accounting firms hold. Before you request any quotes, confirm that each insurer on your list actually covers your services, your credential type and the client base you serve. An insurer that writes great coverage for bookkeepers may be the wrong fit for a firm performing audits.
Look up what accountant insurance typically costs for your firm size and services so you have a reference point going in. Then request quotes using the same limits, deductibles and endorsements across every provider. A policy that looks cheaper per month but carries a higher deductible or narrows your retroactive date is not a real savings.
Go through the policy document line by line against your state board requirements and client engagement terms before committing. Check that your retroactive date on professional liability reaches back far enough to cover prior work, since a gap there can leave years of engagements exposed. Confirm the named insured matches your firm's legal name exactly, because even a small mismatch can create compliance problems with clients.
Adding your first employee, taking on audit engagements, shifting from individual to business clients or restructuring your firm as an LLP all change what coverage you need and how much of it. Don't wait for renewal to find out your policy doesn't match how your practice actually operates now. Revisit your coverage before any major change takes effect.
Beyond what this guide covers, I've answered the most common remaining questions accountants and CPAs have before purchasing business insurance.
Accountant and CPA business insurance is a combination of policies that cover the specific ways your practice creates financial risk. For example, professional liability insurance responds when a client claims your tax work caused them a penalty. Another called cyber insurance pays for breach notification if a ransomware attack compromises your client files. Others can cover injuries at your office, damage to your equipment or claims from employees. The right combination depends on your credential, your services and who your clients are.
It depends on your state, your firm structure and your credential. Some states require liability coverage for CPA firms organized as corporations, LLCs or LLPs, with minimum professional liability thresholds that vary by state. Florida, for example, requires CPA firms to maintain at least $50,000 per licensed professional in combined assets or insurance. Your employee count can also trigger workers' compensation rules in most states at your first hire. Beyond legal mandates, your clients' engagement contracts often impose their own requirements that function the same way.
No state currently requires individual CPAs to carry professional liability insurance as a condition of licensure. However, several states impose requirements at the firm level for CPA practices organized as legal entities. Even where it isn't legally mandated, most business clients will require proof of professional liability coverage before signing an engagement letter, making it effectively mandatory for firms serving that market.
Business clients commonly require at least $1 million per occurrence and $2 million aggregate in professional liability coverage in their engagement letters. Larger corporate clients, government contracts and clients with lender requirements may specify higher limits or require additional endorsements. Individual tax clients rarely impose formal insurance requirements, but that doesn't reduce your exposure if something goes wrong.
Most business clients will request a certificate of insurance (COI) showing your active policies and coverage limits before the engagement begins. Some engagement contracts also require additional insured status, which must be added to your policy through your carrier as an endorsement. A COI alone confirms coverage exists but does not extend your protection to the client, so read the contract carefully to determine whether an endorsement is needed.
Pull up the insurance section of the engagement letter and compare it against your policy's limits, covered services and endorsements before any work begins. Pay particular attention to whether the contract requires a specific retroactive date, additional insured status or minimum limits that exceed your current policy. If anything doesn't match, contact your carrier before signing.
Start with the state board of accountancy that regulates CPA licensing in your state, since requirements vary by credential type and firm structure. You may also need to check your state's department of insurance for workers' comp thresholds and your state's secretary of state office for entity-level obligations. Not every requirement lives in the same place, so check all three before assuming you have the full picture.
Your coverage requirements typically shift when you hire employees, begin offering audit or attest services, transition from individual to business clients, restructure your firm as an LLP or corporation, or take on clients whose engagement contracts specify coverage you don't currently carry. Any of those changes can introduce new legal or contractual obligations that your existing policies may not address.
You now have a clear picture of which providers belong on your shortlist and what coverage your accounting practice actually needs from them. When you start comparing quotes, remember that two policies at the same price can have very different retroactive dates, attest work exclusions and cyber sub-limits behind them. Those differences don't surface until a claim happens. The best policy is the one that covers the services you actually perform, at limits that reflect your real client exposure, from a carrier that handles professional liability disputes well.
Before you compare, these are my top picks overall for accountants.
Use our matching tool below to find providers that fit your accounting firm. From there, you can get quotes and compare coverage directly on their site.
Connor Bolton is Senior SEO and Content Manager at MoneyGeek, where he leads the business and pet insurance editorial teams. He sets the research framework, data standards and content structure for his team. All content goes through his accuracy review before publication. Connor also writes in-depth guides and has spent more than four years covering insurance products across personal, commercial and specialty lines.
The research infrastructure Connor built covers auto, home, renters, life, health, business and pet insurance across pricing analysis, carrier research, customer experience and coverage evaluation. It includes over 6 million data points for business insurance across 408 industry areas, all 50 states and 16 vehicle types. The pet insurance side covers over 5 million profiles across 18 major providers, 100+ breeds and ages up to 20 years. Connor’s insurance research and his team's work have been cited by the U.S. Chamber of Commerce, Allstate, Liberty Mutual, CBS News, Forbes and LegalZoom.
Connor also talks with underwriters and carrier liaisons at Ethos, The Hartford, ERGO NEXT, Nationwide and State Farm, and monitors business and pet owner communities on Reddit. Those sources shape how his team evaluates carriers, structures rate analysis and writes content for real pet owners.
Questions about MoneyGeek's business or pet insurance content? Reach him at connor@moneygeek.com or on LinkedIn.
