$3M Professional Liability (E&O) Insurance for Software Developers

For software developers whose client contract asks for $3M: it means $3M of Technology E&O per claim and in total, built as one primary policy or a primary plus follow-form excess.

What does a $3M requirement mean for software developers?

Professional Liability (E&O, short for Errors and Omissions) covers claims that a mistake in your work cost a client money. Software firms usually buy Technology E&O, a form written for software and IT services. A $3M clause in an MSA might read:

• Per claim and aggregate: the most paid for one claim, and for all claims in the policy year. Here, both are $3M.
• Network security and privacy: this is Cyber. Ask whether it shares the $3M or needs its own limit.
• Claims-made: Professional Liability almost always covers claims made and reported while the policy is active, for work after the retroactive date (the earliest covered work date). See claims-made vs. occurrence.
• No mention of excess: confirm with the client that primary plus follow-form excess meets the clause.

Who asks software developers for $3M?

Most clients ask software developers for $1M or $2M. $3M is less common. It tends to appear when your code runs something the client cannot lose:

• Mid-market and enterprise companies whose vendor standards may call for $3M on larger Statements of Work (the scope of one project).
• Fintech, lenders and payment companies hiring you to build code that moves money.
• Health tech firms and provider groups buying apps that touch patient data.
• E-commerce, logistics and prime contractors relying on your checkout or ordering systems.
• Public agencies with $3M written into the RFP.

If a contract asks for more than $3M, see $5M for software developers. $3M often costs less than $5M and needs fewer excess layers.

How is $3M built?

An excess layer is a separate policy that pays only after the primary limit is used up. "$1M xs $2M" means a $1M layer above the first $2M.

The excess should follow form, meaning it uses the primary's terms. Ask Morrow to point out the retroactive dates and policy periods when it reviews the quotes with you. Many policies pay defense costs inside the limit, so legal bills shrink what is left (see defense costs inside or outside the limit). A commercial umbrella almost never counts toward this limit.

What will underwriters ask for?

Each insurer in the structure (the primary and any excess layer) may review your firm.

• What you build (custom apps, SaaS, integrations, migrations) and whether the software handles payments or health records.
• How you ship code: testing, code review, staging, rollback plans and client sign-off before go-live.
• Your access to client systems and data, plus security basics like multifactor login and backups.
• The MSA asking for $3M and your standard terms, including warranties and any limitation of liability clause (a cap on what you owe a client).
• Revenue, largest clients, loss runs (a report of past claims) and your current policy.

What affects the cost?

• What your code touches. Code that moves money, stores sensitive data or runs core operations often costs more.
• Contract terms. Uptime promises and broad warranties can raise cost.
• How the $3M is built. Excess layers are often priced differently than the primary, so the split can change the total.
• Claims history and controls. Past claims and weak release practices can raise cost.
• Retention and Cyber. A higher retention (what you pay on each claim first, like a deductible) may lower premium. Adding Cyber adds cost.

Frequently asked questions

Do I need $3M Professional Liability (E&O) as a software developer?

Only if your contract or client requires it. Many software contracts ask for $1M or $2M, and some larger clients ask for $3M.

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

Sometimes, but not automatically. Standard forms do not include clients, though some Technology E&O policies may add a client as an additional insured (a protected party on your policy). It is usually limited to claims arising from your services and often needs underwriter approval. Check your contract and raise it when you request quotes. Many clients also accept a certificate of insurance (a one-page proof of coverage).

Is $3M harder to get than $2M?

Often a bit. The limit is higher and a second insurer may review your firm. Morrow can help you find it.

What kind of claim could reach $3M for a software firm?

Two hypothetical examples. A pricing update you deploy for a retailer applies the wrong discount over a holiday weekend, and the client claims lost revenue. Or a data migration corrupts a lender's loan records, and the client claims cleanup costs.

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.