⚡ Why use a brokerage platform instead of buying direct? These carriers let you buy directly — but you'll only see that one carrier's price. A brokerage platform like Insura shops 10+ carriers behind the scenes to find the lowest rate for your exact business. The price you pay is the same whether you buy direct or through a broker — carriers pay the broker's commission, not you.

Quick Answer: What's the best insurance carrier for CPAs in 2026?

Hartford is the best overall for small to mid-size CPA firms — starting at $67/mo with defense costs outside limits. CNA is best for AICPA members. Chubb is best for large firms needing premium coverage. We independently ranked all 6 major carriers below.

Compare quotes from all top CPA carriers in 60 seconds →

2026 CPA Insurance Carrier Rankings

Rank	Carrier	E&O From	Cyber From	AM Best	Best For
🥇	Hartford	$67/mo	$50/mo	A+	Best overall value
🥈	CNA	$85/mo	$75/mo	A	AICPA members
🥉	Chubb	$125/mo	$120/mo	A++	Large firms, premium
4	Hiscox	$75/mo	$55/mo	A	Solo CPAs, online-first
5	Travelers	$90/mo	$65/mo	A++	Multi-policy bundling
6	Zurich	$110/mo	$90/mo	A+	Mid-size firms, global

How We Ranked These Carriers

Insura is an independent insurance comparison platform. We don't sell policies or represent any carrier. Our rankings are based on five weighted criteria:

Pricing (30%) — Starting premiums, bundle discounts, and overall cost-effectiveness
Coverage breadth (25%) — Policy form comprehensiveness, endorsement options, limits available
Claims handling (20%) — Response times, policyholder satisfaction, settlement approach
CPA-specific expertise (15%) — Accounting industry knowledge, tailored policy forms, risk management tools
Ease of purchase (10%) — Application process, binding speed, online capabilities

We reviewed policy forms, interviewed policyholders, analyzed claims data, and collected pricing from multiple firm sizes to compile these rankings.

#1: Hartford — Best Overall Value

Insura Score: 9.2/10

Hartford consistently delivers the best combination of price and coverage for CPA firms of all sizes. They've insured small businesses for over 200 years and their professional liability program is fine-tuned for accounting professionals.

Pricing

Firm Size	E&O Monthly	Cyber Monthly	Bundle Price
Solo CPA	$67/mo	$50/mo	$100/mo
Small firm (2-5)	$150–$350/mo	$100–$250/mo	$215–$510/mo
Mid-size (6-20)	$350–$650/mo	$250–$500/mo	$510–$975/mo

Key Strengths

Defense costs outside the limit — Hartford's biggest differentiator. Your full coverage amount stays intact even while legal defense costs accumulate. On a $1M policy with $200K in defense costs, you still have $1M for settlements — effectively $1.2M in total protection.
Same-day binding — Online application takes 15 minutes, and coverage can start immediately
$0 cyber retention on breach response — No out-of-pocket costs for forensics, notification, or credit monitoring
Regulatory proceedings coverage — IRS investigations, state board proceedings, and disciplinary actions included
Prior acts from inception — Covers work performed before the policy start date
Flexible with claims history — More willing than most carriers to insure firms with 1-2 prior claims
Strong bundling discounts — 15% off E&O + cyber bundles, 10-15% additional for GL and BOP

Key Weaknesses

Maximum limits of $5M may be insufficient for the largest firms
Less policy customization compared to Chubb or Zurich
No worldwide coverage for international engagements
Standard policy forms with limited endorsement options

Ideal For

Solo CPAs through mid-size firms (1-20 professionals) doing tax preparation, bookkeeping, advisory, and general accounting services. Hartford is the default recommendation for most CPA practices.

#2: CNA — Best for AICPA Members

Insura Score: 8.9/10

CNA has insured accounting firms for over 50 years through their exclusive partnership with the AICPA Professional Liability Insurance Program. No other carrier has deeper expertise in the accounting profession's specific risks.

Pricing

Firm Size	E&O Monthly	Cyber Monthly	Bundle Price
Solo CPA	$85/mo	$75/mo	$136/mo
Small firm (2-5)	$175–$375/mo	$125–$275/mo	$255–$550/mo
Mid-size (6-20)	$375–$700/mo	$275–$525/mo	$550–$1,040/mo

Key Strengths

AICPA program discounts — 5-10% premium reduction for active AICPA members, with additional credits for completing risk management modules
Deepest accounting expertise — 50+ years insuring CPA firms means they understand the nuances of accounting claims better than any generalist carrier
Free risk management resources — CE-eligible courses, practice management tools, and engagement letter templates through the AICPA program
Subpoena assistance coverage — Covers costs of responding to IRS and court subpoenas related to your work
Identity theft response — Comprehensive support when client data is compromised, including identity restoration services
Free tail coverage on retirement — After 5+ continuous years, CNA offers free automatic tail coverage if you retire — a huge benefit worth thousands
E&O + cyber bundle savings — Up to 15% bundle discount with coordinated coverage that eliminates gaps

Key Weaknesses

Slightly higher baseline pricing than Hartford (before member discounts)
Application process is more involved — not as quick as Hartford's online flow
Defense costs inside limits on standard policy
Member discounts only available to AICPA and NAEA members

Ideal For

AICPA members of any firm size. CNA's combination of industry expertise, risk management resources, and retirement tail coverage makes them especially attractive for CPAs who plan to stay in the profession long-term.

💡 AICPA member? CNA is likely your best option after applying member discounts. Compare CNA's rates against other carriers →

#3: Chubb — Best Premium Coverage for Large Firms

Insura Score: 8.7/10

Chubb is the luxury choice in CPA insurance — the most expensive carrier but also the broadest coverage, highest limits, and best claims handling in the industry. Their A++ AM Best rating reflects unmatched financial strength.

Pricing

Firm Size	E&O Monthly	Cyber Monthly	Bundle Price
Solo CPA	$125/mo	$120/mo	$208/mo
Small firm (2-5)	$275–$500/mo	$200–$400/mo	$405–$765/mo
Mid-size to large (6-50)	$500–$1,200/mo	$400–$750/mo	$765–$1,660/mo

Key Strengths

Industry-leading claims handling — 4.7/5 policyholder satisfaction. Chubb treats claims as collaborative problem-solving, not adversarial cost management
True consent clause — They won't settle a claim without your agreement, protecting your reputation
Highest available limits — E&O up to $15M+, cyber up to $25M+ for firms that need maximum protection
Worldwide coverage — Full protection for international engagements, overseas data, and cross-border work
Broadest coverage definitions — Chubb's policy form is the most inclusive in the market
Loss mitigation coverage — Pays costs to prevent a situation from escalating into a formal claim
Crisis management & PR — Dedicated reputation recovery support after incidents
Dedicated account team — Named underwriter and claims handler for each account

Key Weaknesses

Most expensive option — 40-90% more than Hartford depending on firm size
Defense costs inside limits (standard) — Defense spending erodes your coverage. Outside-limits endorsement available but adds 15-25% to premium
No online application — Must work through a broker; 3-7 business days for quotes
Overkill for small firms — Solo CPAs doing tax prep don't need Chubb-level coverage
Requires clean claims history — Less flexible than Hartford or CNA with prior claims

Ideal For

Mid-size to large CPA firms (10+ professionals) performing audit, attestation, and advisory services for corporate or high-net-worth clients. Chubb is worth it when claims experience, coverage breadth, and high limits are top priorities.

#4: Hiscox — Best for Solo CPAs & Online-First Experience

Insura Score: 8.4/10

Hiscox has built their business around serving solo professionals and micro-firms with a frictionless online experience. If you want to quote, buy, and manage your CPA insurance entirely online in under 10 minutes, Hiscox is the way to go.

Pricing

Firm Size	E&O Monthly	Cyber Monthly	Bundle Price
Solo CPA	$75/mo	$55/mo	$117/mo
Small firm (2-5)	$150–$325/mo	$100–$225/mo	$225–$495/mo

Key Strengths

Fastest online experience — Quote in 5 minutes, bind immediately, manage everything online
Monthly billing with no annual commitment — Pay month-to-month with no extra fees
$0 deductible option — Available for smaller practices that want zero out-of-pocket on claims
Broad professional services definition — Covers tax prep, bookkeeping, consulting, payroll, and advisory under one policy
Simple claims process — Streamlined online reporting and tracking
Competitive solo pricing — Only slightly more than Hartford for solo CPAs

Key Weaknesses

Standardized policy forms with less customization
May be too basic for firms with complex needs (audit, attestation)
Maximum limits lower than Chubb or Hartford ($3M typical max)
Claims handling is adequate but not exceptional
Less accounting industry expertise compared to CNA

Ideal For

Solo CPAs, bookkeepers, and small tax preparation practices that value simplicity, speed, and flexibility. If you want insurance purchased and active in under 10 minutes without talking to anyone, Hiscox delivers.

#5: Travelers — Best for Multi-Policy Bundling

Insura Score: 8.2/10

Travelers earns its spot through financial strength (A++ AM Best — tied with Chubb for highest rating) and the best multi-policy bundling discounts in the market. If you need E&O, cyber, general liability, property, and workers' comp under one roof, Travelers is hard to beat.

Pricing

Firm Size	E&O Monthly	Cyber Monthly	Bundle Price
Solo CPA	$90/mo	$65/mo	$132/mo
Small firm (2-5)	$175–$375/mo	$125–$275/mo	$255–$550/mo
Mid-size (6-20)	$375–$700/mo	$250–$500/mo	$530–$1,020/mo

Key Strengths

Best multi-policy discounts — 10-15% across bundled policies, with some packages offering up to 20%
A++ AM Best rating — Tied with Chubb for highest financial strength; guaranteed claims-paying ability
CyberFirst Essentials — Entry-level cyber coverage included with BOP at no extra cost
Broad professional services coverage — Well-suited for firms offering diverse services
Scalable coverage — Easy to upgrade limits and add endorsements as your firm grows
Workers' comp integration — Seamless addition for firms with employees

Key Weaknesses

E&O pricing is mid-range — not as competitive as Hartford or Hiscox for standalone
Less CPA-specific expertise than CNA
Standard policy forms — less customizable than Chubb
Online experience is functional but not as polished as Hiscox

Ideal For

CPA firms that need comprehensive business insurance packages beyond just E&O and cyber. If you're buying 3+ policies, Travelers' bundling discounts make them extremely competitive on total cost.

#6: Zurich — Best for Mid-Size Firms with Global Clients

Insura Score: 7.9/10

Zurich is a global insurance powerhouse that offers strong professional liability coverage for mid-size CPA firms, particularly those with international clients or operations. They're less well-known in the small business space but offer solid coverage for the right firm.

Pricing

Firm Size	E&O Monthly	Cyber Monthly
Small firm (2-5)	$200–$400/mo	$150–$300/mo
Mid-size (6-20)	$400–$800/mo	$300–$600/mo

Key Strengths

Global coverage — Strong international protection for firms with overseas clients or operations
High limits available — Up to $10M for E&O, with excess layers available
Risk engineering services — Proactive risk assessments and loss prevention resources
Financial strength — A+ AM Best rating with global resources
Flexible policy design — Customizable for complex firm structures

Key Weaknesses

Not competitive for solo CPAs or very small firms
Less established in the US small business market
Requires broker involvement for most policies
Higher starting prices than Hartford, Hiscox, or CNA
No AICPA program benefits

Ideal For

Mid-size CPA firms (6-20+ professionals) with international clients or multi-jurisdictional practices. Zurich is a strong alternative to Chubb for firms that need global coverage without Chubb-level pricing.

📊 See quotes from all ranked carriers. Compare CPA insurance side-by-side →

Head-to-Head Feature Comparison

Feature	Hartford	CNA	Chubb	Hiscox	Travelers	Zurich
Defense outside limits	✅	❌	💲 Endorsement	❌	❌	💲 Endorsement
Same-day binding	✅	❌	❌	✅	❌	❌
$0 cyber retention	✅	❌	❌	❌	❌	❌
AICPA program	❌	✅	❌	❌	❌	❌
Free retirement tail	❌	✅ (after 5 yrs)	❌	❌	❌	❌
Consent to settle	❌ (consult only)	❌	✅	❌	❌	💲 Endorsement
Max E&O limits	$5M	$5M	$15M+	$3M	$5M	$10M
Worldwide coverage	❌	Limited	✅	❌	✅	✅
Online application	✅	Partial	❌	✅	Partial	❌
Claims satisfaction	4.2/5	4.4/5	4.7/5	3.9/5	4.1/5	4.0/5

Which Carrier Should You Choose?

Decision Matrix by Firm Type

If You Are…	Best Carrier	Why
Solo CPA, tax prep & bookkeeping	Hartford or Hiscox	Lowest price, fast binding
Solo CPA, AICPA member	CNA	Member discounts + retirement tail
Small firm (2-10), tax & advisory	Hartford	Best value, defense outside limits
Small firm needing many policies	Travelers	Best bundle discounts
Mid-size firm with audit services	CNA or Chubb	Audit expertise, higher limits
Large firm (20+), corporate clients	Chubb	Highest limits, best claims
Firm with international clients	Chubb or Zurich	Worldwide coverage
Seasonal tax preparer	Hartford or Hiscox	Flexible billing, low cost
Enrolled Agent (EA)	CNA	NAEA program, IRS representation coverage

🎯 Not sure which carrier fits your firm? Get personalized quotes from all top carriers →

How Carrier Choice Affects Claims

Your carrier choice doesn't matter much — until you file a claim. Then it matters enormously. Here's what we've seen from real CPA claims:

Response Speed

Chubb: Same-day acknowledgment, dedicated handler assigned within 24 hours
CNA: 24-hour acknowledgment, handler assigned within 48 hours
Hartford: 24-48 hour acknowledgment, handler assigned within 48-72 hours
Travelers: 24-48 hour acknowledgment, handler assigned within 48-72 hours
Hiscox: 48-72 hour acknowledgment, online tracking portal
Zurich: 24-48 hour acknowledgment, handler assigned within 48 hours

Settlement Approach

Chubb: Client-focused. Won't settle without your consent. Prioritizes your reputation.
CNA: Balanced. Considers your input but makes carrier-driven decisions.
Hartford: Efficient. Aims to resolve quickly and cost-effectively. Consults you but has final authority.
Travelers: Similar to Hartford — efficient resolution with policyholder consultation.
Hiscox: Standard process, less personalized for accounting-specific claims.
Zurich: Methodical and thorough, broker-mediated communication.

Panel Attorney Quality

All six carriers use panel attorneys for CPA malpractice claims, but the caliber varies:

Chubb: Top-tier firms with dedicated professional liability practices
CNA: Strong panel with deep accounting industry knowledge from AICPA program
Hartford: Good regional firms with professional liability experience
Travelers: Solid panel, generalist professional liability expertise
Hiscox: Adequate, more standardized defense approach
Zurich: Strong international firms, good for cross-border matters

Switching Carriers: What You Need to Know

Switching CPA E&O carriers is common and straightforward if done correctly:

Key Steps

Get new quotes before renewal — Start shopping 60-90 days before your renewal date
Ensure prior acts continuity — The new carrier must match your existing retroactive (prior acts) date. This is non-negotiable.
Don't cancel mid-term — Switch at renewal to avoid cancellation penalties and coverage gaps
Compare net coverage, not just price — A cheaper policy with defense costs inside limits may provide less actual protection
Request tail quotes — Know what tail coverage costs from your current carrier in case you need it

When to Switch

Your premium increased more than 10% without claims or growth
Your firm's needs have changed (added audit services, grew significantly)
You had a poor claims experience
A better bundle opportunity emerged
You joined AICPA and can access CNA's program

When to Stay

You're approaching retirement (CNA's free tail benefit requires continuous years)
You have active claims or pending incidents
Your current carrier just paid a claim — they've earned your loyalty
The savings from switching are minimal (<$500/year)

What Every CPA Carrier Should Include

Regardless of which carrier you choose, make sure your CPA insurance policy includes these essentials:

E&O Must-Haves

✅ Prior acts coverage from your first day in practice
✅ Regulatory proceedings coverage (IRS, state CPA boards)
✅ Disciplinary proceedings defense
✅ Subpoena assistance coverage
✅ Deposition expense coverage
✅ Reasonable deductible ($2,500-$10,000 depending on firm size)
✅ Adequate limits ($500K minimum for solos, $1M+ for firms)

Cyber Must-Haves

✅ First-party breach response (forensics, notification, credit monitoring)
✅ Business interruption coverage
✅ Ransomware/extortion coverage
✅ Social engineering/wire fraud coverage
✅ Regulatory defense coverage
✅ 24/7 breach response hotline

Nice-to-Haves

🎁 Defense costs outside limits (Hartford)
🎁 $0 breach response retention (Hartford)
🎁 Free retirement tail coverage (CNA)
🎁 Consent to settle clause (Chubb)
🎁 Pre-breach services and training (most carriers)
🎁 Risk management CE credits (CNA)

Why Use a Brokerage Platform Instead of Buying Direct?

When a carrier offers instant quote-and-bind on their website, it's convenient — but you're only seeing one carrier's rates. A brokerage platform like Insura changes that equation:

One application, multiple quotes. Fill out one form and get compared across 10+ A-rated carriers including Hartford, Chubb, Hiscox, and more. No need to re-enter your business info on five different websites.
The price is the same — or lower. Carriers pay the broker's commission directly. Your premium is identical to what you'd pay buying direct, and often lower because a broker can find a carrier that prices your specific risk more competitively.
We work for you, not the carrier. A direct carrier's website is designed to sell you their policy. A brokerage platform is designed to find you the best policy — we have no incentive to push one carrier over another.
Automated comparison shopping, year after year. When your policy renews, a brokerage platform automatically re-shops your coverage across carriers to make sure you're still getting the best rate. Buy direct, and you're locked into one carrier's renewal pricing with no leverage.
Licensed experts when you need them. Have a coverage question or need help with a claim? You get access to real brokers — not a carrier's customer service line reading from a script.

→ Get your free multi-carrier quote

Frequently Asked Questions

Which CPA insurance carrier is cheapest?

Hartford offers the lowest starting prices at $67/mo for E&O and $50/mo for cyber. Hiscox is a close second at $75/mo E&O and $55/mo cyber. However, cheapest isn't always best — compare coverage details, not just premiums.

Is CNA better than Hartford for CPAs?

It depends. CNA is better if you're an AICPA member (5-10% discount, free risk management tools, retirement tail benefit). Hartford is better on price for non-members and offers defense costs outside limits, which CNA doesn't.

Do I need a broker to get CPA insurance?

Not always. Hartford and Hiscox offer direct online applications. CNA, Chubb, and Zurich typically require broker involvement. Travelers has a partial online process. Using an independent comparison platform like Insura lets you compare all carriers without committing to a single broker.

Can I change carriers without losing coverage?

Yes — as long as you switch at renewal and the new carrier matches your prior acts date. There should be no gap in coverage and no loss of retroactive protection.

Which carrier handles claims best?

Chubb has the highest claims satisfaction (4.7/5) followed by CNA (4.4/5). Chubb's consent-to-settle clause and dedicated claims teams set the industry standard. If claims experience is your top priority, Chubb justifies the premium.

Should I bundle E&O and cyber with the same carrier?

Yes — bundling saves 10-15% and eliminates coverage gaps between policies. It also simplifies the claims process when an incident involves both E&O and cyber elements.

How often should I shop my CPA insurance?

Every 2-3 years, or whenever you experience a significant premium increase, add new services, or grow your firm. Loyalty doesn't usually get you better rates in professional liability insurance.

What if a carrier isn't listed here?

There are many smaller and specialty carriers not included in our top 6. They may offer competitive options for niche situations. Our rankings focus on the carriers that serve the broadest range of CPA firms with the strongest track records.

🎯 Ready to find your best carrier? Compare personalized quotes from all top CPA insurance carriers →

The Bottom Line

There's no single "best" CPA insurance carrier — the right choice depends on your firm size, services, budget, and priorities. But here's the simplified version:

Best value for most firms → Hartford ($67/mo, defense outside limits)
Best for AICPA members → CNA (member discounts, retirement tail)
Best for large firms → Chubb (highest limits, best claims)
Easiest to buy → Hiscox (online in 5 minutes)
Best for bundling → Travelers (10-15% multi-policy discounts)
Best for global firms → Zurich (worldwide coverage)

The most important thing? Having coverage. Any of these six carriers will protect your CPA practice far better than going uninsured. Get quotes, compare, and pick the one that fits.

Related Guides

Complete Accountant & CPA Insurance Guide — Our comprehensive pillar guide covering all insurance types for accounting professionals
How Much Does CPA E&O Insurance Cost? — Detailed pricing breakdown for professional liability coverage
Cyber Insurance for Accountants & CPAs — Protect your firm's data with the right cyber policy
Insurance for Tax Preparers & Seasonal CPAs — Specialized coverage for tax season professionals

Don't limit yourself to one carrier's price. Insura compares Hartford, Chubb, Hiscox, and 20+ other carriers — the price is the same or less, and you'll know you got the best deal. Get your free multi-carrier quote →