Professional Liability (E&O) Insurance Calculator

Estimate your errors and omissions (E&O) professional liability insurance cost based on profession, revenue, years of experience, and claims.

Quick Scenarios

$
yrs
Estimated Annual Premium
$2,160.00
$180.00/month
Base Rate Premium
$2,400.00
Before experience & claims adjustments
Experience Discount
-10%
Excellent experience
Claims Surcharge
None
Clean history

Coverage Limit Comparison

Coverage LimitAnnual PremiumMonthly Cost% Increase
$1M / $2M$2,160.00$180.00—
$2M / $4M$3,024.00$252.00+40%
$5M / $10M$3,888.00$324.00+80%

Sample Claim Scenarios

Minor Claim (Non-litigated)

Client alleges missed deadline causing financial loss. Settled with good faith.

$25,000.00

Major Claim (Litigated)

Client sues for significant damages. Court verdict against professional.

$950,000.00 – $2,400,000.00

Key Takeaways

  • Errors & Omissions (E&O) coverage protects your firm from negligence claims
  • Experience discounts make long-standing businesses more competitive
  • Prior claims history significantly impacts rates — maintain quality control
  • Higher coverage limits provide peace of mind for larger engagements
Planning notes, formulas, and examples

About the Professional Liability (E&O) Insurance Calculator

Professional liability insurance — also called errors and omissions (E&O) — protects professionals against claims of negligence, mistakes, or failure to deliver promised services. Whether you're a consultant, accountant, architect, IT provider, or real estate agent, E&O coverage shields your business from potentially devastating lawsuits.

This calculator estimates your E&O premium based on your profession's risk category, annual revenue, years in business, and claims history. Higher-risk professions and larger firms pay more because their exposure to lawsuits is greater. Claims-free history can earn significant discounts.

This is an educational estimate only and should not be treated as an actual quote. Professional liability rates vary widely by carrier, state, and specific practice area. Always work with a licensed insurance broker for carrier quotes.

When This Page Helps

A single malpractice or negligence claim can cost tens or hundreds of thousands of dollars in legal defense and settlements. E&O insurance is often required by contracts, professional licensing boards, and clients. This calculator helps professionals budget for this essential coverage and understand what factors drive the premium.

How to Use the Inputs

  1. Select your profession category (low, medium, or high risk).
  2. Enter your annual revenue or billings.
  3. Enter the number of years you've been in business.
  4. Indicate whether you have any prior claims in the last 5 years.
  5. Select your desired per-claim and aggregate limits.
  6. Review the estimated annual premium and monthly cost.
Formula used
Base Premium = (Revenue / 1,000) × Profession Rate Experience Discount = if years > 5 then 0.90, if years > 10 then 0.85, else 1.0 Claims Surcharge = if prior claims then 1.25, else 1.0 Estimated Premium = Base Premium × Experience Discount × Claims Surcharge

Example Calculation

Result: $2,160/year

Base premium: ($300,000 / 1,000) × $8 = $2,400. With 7 years experience (5+ discount): $2,400 × 0.90 = $2,160. No prior claims, so no surcharge. Estimated annual premium = $2,160.

Tips & Best Practices

  • Low-risk professions (marketing, design) typically pay $3-$6 per $1,000 of revenue.
  • High-risk professions (medical, legal, financial) can pay $15-$30+ per $1,000.
  • Maintaining a claims-free record is the most effective way to keep premiums low.
  • Many professional associations offer group E&O programs at discounted rates.
  • Review your policy's retroactive date — it determines how far back coverage extends.
  • This is an educational estimate only — get quotes from licensed brokers for carrier pricing.

Why Professional Liability Insurance Matters

Even the most diligent professionals make mistakes. A missed deadline, an overlooked regulation, or a miscommunication can lead to a client claim that costs thousands in legal defense alone — even if you ultimately win. E&O insurance provides peace of mind and financial protection.

Risk Categories by Profession

Low-risk professions like marketing consultants and graphic designers typically pay $500-$2,000 per year. Medium-risk professions like IT consultants and real estate agents pay $1,500-$5,000. High-risk professions like architects, accountants, and financial advisors can pay $3,000-$15,000 or more depending on firm size.

Claims-Made vs. Occurrence Policies

Most E&O policies are claims-made, meaning they cover claims filed during the policy period regardless of when the incident occurred (back to the retroactive date). This differs from occurrence-based GL policies. When switching carriers, you may need tail coverage to protect against claims from past work.

Sources & Methodology

Last updated:

Frequently Asked Questions

  • E&O covers claims alleging professional negligence, errors, omissions, or failure to perform services as promised. It pays for legal defense costs and settlements or judgments up to your policy limits, even if the claim is groundless.

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