Quick answer
Most California law firms should carry at least $1,000,000 per claim / $1,000,000 aggregate, and many should carry $1,000,000 per claim / $3,000,000 aggregate. The right limit depends on the size of the matters you handle, your client contracts, and your firm's revenue: a solo doing family law or immigration usually needs less than a firm litigating commercial disputes or closing real estate transactions.
A practical rule: set your per-claim limit to the largest loss a single error could plausibly cause, then check what your clients and co-counsel contracts require. PRIA Brokers (CA License #0G81238) compares A-rated carriers: request a lawyers malpractice quote or call (888) 998-7742.
Decision table by firm size
| Firm profile | Minimum sensible limits | Why |
|---|---|---|
| Solo, lower-risk practice (family, immigration, criminal defense, estate planning) | $1,000,000 / $1,000,000 | Claim severity is usually modest; most client contracts accept $1M |
| Solo, higher-risk practice (commercial litigation, real estate, securities, patent) | $1,000,000 / $3,000,000 | A single transactional error can exceed a $1M per-claim limit |
| 2 to 5 attorneys, mixed practice | $1,000,000 / $3,000,000 | Multiple matters and staff supervision raise frequency |
| 6 to 15 attorneys | $2,000,000 / $4,000,000 | Larger matters, higher revenue exposure, institutional clients |
| 16 or more attorneys | $2,000,000 / $4,000,000 or higher, plus umbrella | Client contracts and lender or co-counsel requirements often specify higher limits |
| Any firm handling transactions above $5M | $2,000,000 per claim or higher | Severity tracks the value at stake, not the number of attorneys |
Limits are subject to carrier underwriting and eligibility. Higher limits are not always available for every practice area, and a carrier may require a deductible or claims review first.
How to size the limit
1. Look at your largest matter. If you routinely close transactions, handle appeals, or litigate claims with seven-figure exposure, a $1M per-claim limit will not cover a serious error.
2. Read your client contracts. Institutional clients, government agencies, and lenders often require specific limits in writing, sometimes $2M or more, plus additional insured or notice wording.
3. Check co-counsel and referral agreements. Joint engagements often require matching limits across firms.
4. Consider the aggregate. A per-claim limit alone is not enough: if two claims arise in one policy year, the aggregate caps total recovery. A $1M/$1M policy is exhausted by a single $1M claim.
5. Budget the deductible. Choosing a higher limit with a deductible you can fund often costs less than a lower limit with no deductible.
6. Review annually. Limits should grow with revenue, matter size, and attorney count.
Per claim vs. aggregate, in plain terms
- Per claim (each claim) limit is the most the policy pays for any one claim, including defense costs if the policy erodes limits.
- Aggregate limit is the most the policy pays in total for the policy period, usually for all claims combined.
- A $1M/$3M policy can pay up to $1M on one claim and up to $3M across the year. A $1M/$1M policy pays $1M total, so one serious claim uses the entire limit.
Ask whether defense costs are inside or outside the limit. Policies that pay defense in addition to the limit preserve the full amount for settlement, which is often worth a higher premium for litigation practices.
What higher limits do not fix
- Prior acts gaps. Limits mean nothing for work performed before your retroactive date.
- Excluded practice areas. Securities, patent, or other excluded work is uninsured regardless of limit.
- Tail exposure. If you retire or switch carriers, extended reporting coverage must be purchased or negotiated.
- Entity coverage. Confirm the firm entity is named, not just the attorneys.
- Other lines. General liability, cyber, and EPLI are separate policies; malpractice limits do not respond to those claims.
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.