Quick answer
Lawyers professional liability insurance in California typically costs about $1,200 to $3,500 per year for a solo attorney in a lower-risk practice area at $1,000,000 per claim / $1,000,000 aggregate limits. Solos in higher-risk areas such as securities, commercial litigation, or real estate transactions often pay $3,000 to $7,500. Firms with several attorneys usually pay $6,000 to $15,000 for 2 to 5 attorneys and $15,000 to $40,000 for 6 to 15 attorneys.
Those are planning ranges, not quotes. Actual premium depends on practice area, firm size, annual revenue, limits, deductible, claims history, and carrier appetite. PRIA Brokers (CA License #0G81238) compares A-rated carriers at no cost: request a lawyers malpractice quote or call (888) 998-7742.
Cost by firm size
| Firm size | Indicative annual premium | Notes |
|---|---|---|
| Solo attorney, lower-risk practice | $1,200 to $3,500 | Family law, immigration, criminal defense, estate planning; $1M/$1M limits |
| Solo attorney, higher-risk practice | $3,000 to $7,500 | Securities, commercial litigation, real estate transactions, patent work |
| 2 to 5 attorneys | $6,000 to $15,000 | Price usually rises with attorney count and revenue, not just headcount |
| 6 to 15 attorneys | $15,000 to $40,000 | Higher limits and multiple practice areas push pricing up |
| 16 or more attorneys | $40,000 and up | Often written with higher limits, a deductible, and claims-history review |
Premium per attorney tends to fall as firms get larger, because fixed costs spread across more lawyers, but total premium rises. Firms with a claim in the past five years can see significantly higher pricing, and some carriers will decline the risk entirely.
What drives the price
- Practice area. Securities, mergers and acquisitions, commercial real estate, and business litigation carry the highest exposure because a single error can involve large transaction values. Family law, immigration, criminal defense, and estate planning are usually the least expensive.
- Limits and deductible. $1,000,000 per claim / $1,000,000 aggregate is a common starting point. Moving to $1M/$3M or $2M/$4M raises premium, while a higher deductible lowers it.
- Annual revenue and attorney count. Carriers price on exposure, so revenue matters as much as headcount.
- Claims history. A prior malpractice claim, even one resolved favorably, affects pricing for several years.
- Defense costs inside or outside limits. Policies that pay defense costs in addition to limits cost more but preserve the full limit for settlements.
- Retroactive date and prior acts. A carrier that will honor your prior acts without exclusions is worth paying for, especially when switching carriers.
What the policy should include
Most California law firm policies should include:
- Prior acts coverage back to your first day of practice, or as far back as the carrier allows.
- Defense costs, with clarity on whether they erode the limit.
- State Bar disciplinary and licensing defense, which many policies include or offer as an endorsement.
- Claims-made and reported terms you understand, plus tail coverage options if you retire, close, or switch carriers.
- Extended reporting period pricing disclosed up front, not discovered at retirement.
California does not mandate professional liability coverage for attorneys, but the State Bar requires attorneys to disclose whether they carry it, and many institutional clients and government agencies require proof of coverage.
How to lower your premium
1. Compare multiple A-rated carriers at renewal instead of auto-renewing.
2. Take the highest deductible you can fund comfortably.
3. Match limits to your actual exposure and client contracts rather than defaulting to the highest option.
4. Document risk management: conflicts checks, engagement letters, calendaring, and supervision of staff.
5. Correct prior applications that overstated revenue or practice scope, since misstated exposure can void coverage.
6. Ask about practice-area-specific programs, which often price better than general law firm forms.
How PRIA handles it
PRIA Brokers (Professional Resource Insurance Agency, LLC), CA License #0G81238, compares A-rated carriers side by side for California law firms and puts the terms that matter, including retroactive dates and prior acts wording, in writing before you bind.
Request a lawyers malpractice quote or start with the California lawyers professional liability guide.
General information, not legal or insurance advice. Prior acts terms, retroactive dates, carrier appetite, and tail pricing vary by carrier and state; confirm the current policy wording. Policy language controls.