Professional Liability (E&O) Limits Explained: $1M/$1M vs $1M/$2M vs $2M/$2M

For small business owners with a contract that names Professional Liability limits: both the per claim and aggregate numbers usually must meet the clause, so $1M/$2M often does not satisfy a $2M requirement.

What does a Professional Liability limit requirement mean?

Professional Liability (also called Errors & Omissions, or E&O) covers claims that your work or advice cost a client money. A clause might read:

• "Each claim" and "annual aggregate." Your policy usually needs to meet both figures, not just the total.
• One number, such as "$2,000,000." Many clients read this as $2M/$2M, so a $1M/$2M policy may not pass.
• "Per occurrence." This term comes from General Liability (the policy for injuries and property damage). Many clients read it as per claim here.
• "Exclusive of defense costs." Many policies pay legal fees inside the limit, so lawyers' bills shrink what is left for a settlement. This wording asks for defense outside the limit.

Hypothetical example: say one covered claim settles for $1.5M, ignoring retention and defense costs. A $1M/$2M policy would pay up to $1M. A $2M/$2M policy could pay the full $1.5M.

Who asks for Professional Liability limits?

Limits show up in master service agreements, vendor onboarding packets and statements of work. Some smaller clients ask for $1M. Larger companies, government agencies and clients in finance or healthcare may ask for $2M or more. Clients with larger or riskier projects sometimes ask for $3M to $10M. Those higher limits usually need a broker. Morrow can help you find them.

How are Professional Liability limits built?

$1M and $2M usually come from one primary policy (the policy that pays first). Higher limits often stack excess layers (extra coverage that sits above the primary policy and pays after it). Excess layers should follow form, meaning they use the same terms as the primary.

A commercial umbrella almost never counts (see why an umbrella usually does not cover Professional Liability). Confirm with the client that primary plus follow-form excess meets the clause.

Professional Liability is almost always claims-made. It generally covers claims made while the policy is active, for work done on or after the retroactive date (the earliest work date the policy covers).

Related reading: how defense costs sit inside or outside limits, claims-made vs occurrence and $2M Professional Liability explained.

What will underwriters ask for?

An underwriter decides whether the insurer offers coverage and on what terms. Expect requests for:

• A completed application describing your services
• Revenue, broken out by type of service
• Loss runs (a report listing past claims) and any known incidents
• The contract that sets the requirement
• Your current policy, including its retroactive date
• Your standard client agreement

What affects the cost?

• The limits. A higher per claim limit usually costs more than a higher aggregate alone.
• Defense terms. Defense outside the limit usually costs more.
• Retention. A higher retention often lowers the premium but raises what you pay per claim.
• Structure. Each excess layer adds its own premium.
• Your services and claims history. Riskier work and past claims can raise the price or narrow your options.

Frequently asked questions

Is $1M/$1M Professional Liability enough if my contract asks for $1M/$2M?

Usually not. A $1M/$1M policy has a lower aggregate than a clause asking for $1M each claim and $2M aggregate. It can work if the clause asks for $1M for both and the other terms (defense costs, retention, retroactive date) match. Confirm with the client.

Does my Professional Liability aggregate limit reset during the year?

Usually not on the same policy. The aggregate is a cap for the whole policy year, so it does not refill after each claim. A renewal, if offered, brings a new aggregate for claims first made in the new period.

I already have Professional Liability. How do I get a higher limit?

Ask Morrow to request new quotes at the limit you need. That could be a new primary policy at the higher limit, or excess layers above your current policy.

Ask whether each quote keeps your retroactive date (prior acts coverage). Not every market will. If the date resets, the new policy generally will not cover earlier work.

Report any known incidents to your current carrier before you switch. Keep the old policy until the new one is bound (confirmed in force). Morrow can review your policy and request these quotes.

Can my client be added as an additional insured on Professional Liability?

Usually not. Some Professional Liability policies can add a client as an additional insured, but many forms do not offer it, and the cover is usually narrow, limited to liability arising from your services. Check the policy wording before you agree to the clause. Many clients accept a certificate of insurance (a one-page summary of your coverage) showing the limits instead.

This article is general information, not legal advice or a coverage determination. Coverage depends on the actual policy wording, carrier underwriting and your contract terms.