Professional Liability Insurance
Covers claims alleging coding errors, missed functionality, or negligent development work.
How it worksProfessional
Insurance for Web Developers
Coverage built for the code, launches, and client data behind every site you build.
One application, shopped to our A-rated carrier network. Number of offers depends on carrier appetite for your class, state, and loss history.
What insurance does a web developer or website design firm need?
Web developers need technology errors and omissions coverage for launch failures and coding disputes, cyber liability for client data exposed through site vulnerabilities, general liability for office risk, and a business owners policy for equipment, since a failed launch or data breach tied to code is excluded under standard general liability.
- Typical coverages
- Technology errors and omissions covering coding and launch disputes; Cyber liability for breaches tied to site or application vulnerabilities; General liability for office and client-meeting exposure; Business owners policy for equipment and office contents
- Who requires it
- Enterprise and e-commerce clients in statements of work; Agencies and platforms requiring proof of coverage before subcontracting; Payment processors for sites handling transaction data
- What drives cost
- Whether projects involve e-commerce or stored customer data; Average project and contract value; Ongoing hosting and maintenance responsibilities; Use of subcontracted developers
- Typical limit structure
- Commonly $1M per claim / $2M aggregate for tech E&O and cyber combined, scaled up for developers maintaining e-commerce platforms with recurring customer payment data.
- Where we place it
- Provident Financial Group is an independent insurance agency that shops one application across our A-rated carrier network. We are licensed in New Jersey, New York, Connecticut, Vermont, Massachusetts, Delaware, Maryland, Pennsylvania, Virginia, North Carolina, South Carolina, Georgia, Florida, Ohio, Michigan, Kansas, Kentucky, Texas, California, Arizona and Nevada.
What underwriters look at
Web developers are hired to deliver a working product on a deadline, and when a launch goes wrong the financial consequences can land directly on the developer. A site that crashes under traffic on launch day, an e-commerce checkout that silently fails and loses sales for days before anyone notices, or a migration that corrupts a client's existing content can each trigger a claim for lost revenue, even if the underlying code met the original project specifications. Because so much of a client's business can depend on a functioning website or application, the financial stakes of a development error are often much larger than the size of the original contract.
Developers who build or maintain systems that touch customer data face an added layer of exposure if that data is exposed through a vulnerability in the code they wrote or maintained. A missed security patch, an improperly secured database, or a misconfigured API endpoint can lead to a breach of a client's customer records, and the client will often look to the developer responsible for building or maintaining the affected system. This exposure has grown as more small businesses rely on custom-built platforms handling payment information, login credentials, and personal data rather than off-the-shelf software with dedicated security teams.
Developers also face disputes over scope, functionality, and ownership once a project is delivered — a client who expected certain features that weren't explicitly documented may allege the final product didn't meet what was promised, and disagreements over source code ownership can surface after a contract ends. A professional liability policy is the core protection against claims tied to the functionality and quality of delivered work, while cyber coverage addresses the breach and downtime exposure that comes with building and maintaining live systems.
Launch failure or site downtime
A site or application that fails at launch or goes down unexpectedly can cause a client significant lost revenue, leading to a claim against the developer.
Client data breach through a coding vulnerability
A security flaw in code built or maintained by the developer can expose a client's customer data and trigger both liability and regulatory costs.
Scope and functionality disputes
Disagreements over whether delivered work matched the agreed specifications can lead to a claim if the client believes the final product fell short.
Data loss during migration or updates
An error during a site migration or platform update can corrupt or delete existing client content, requiring costly recovery or rebuild work.
The full coverage stack for a website design and development firm
| Coverage | Need | Why it matters for this class |
|---|---|---|
| Professional liability (E&O) | Core | Covers claims alleging a coding error, missed functionality, or a failed launch caused the client financial harm. |
| Cyber liability | Core | Responds to breaches of client customer data tied to a vulnerability in code the developer built or maintains, regardless of where the site is hosted. |
| General liability | Core | Covers bodily injury or property damage tied to an office space or client meetings. |
| Business owners policy (BOP) | Recommended | Bundles equipment coverage for computers and servers with baseline liability for a studio or small shop. |
| Employment practices liability (EPLI) | Situational | Becomes relevant as a development shop grows past a solo operation and adds staff or contractors. |
| Commercial crime | Situational | Addresses fraud schemes where an attacker impersonates a client or vendor to redirect project payments. |
| Directors & officers (D&O) | Situational | Applies once a development shop takes on investors or forms a board for a product-based spinoff. |
What general liability does not cover
General liability was built for bodily injury and property damage, not for a client's lost revenue when a site crashes at launch or an e-commerce checkout silently fails for days. Even when the underlying code technically met the agreed specifications, the financial fallout of downtime, lost sales, or a failed migration is a professional-services claim that sits entirely outside a GL policy, which is why technology E&O exists as the primary line for developers.
The exposure compounds when a coding vulnerability leads to a breach of a client's customer data: GL does not respond to notification costs, regulatory inquiries, or the client's own liability to its customers, all of which fall to cyber coverage. Because a vulnerability can sit undetected for months before being exploited, developers need continuous claims-made coverage so that older work remains protected even after the project has ended.
Real claim scenarios
E-commerce checkout failure
A platform update silently breaks the checkout flow on a client's e-commerce site, and the client discovers days later that it lost significant sales during the outage.
Data breach through an unpatched plugin
A known vulnerability in a third-party plugin the developer failed to update is exploited, exposing the client's customer payment data.
Scope dispute after delivery
A client claims the delivered site is missing functionality they believed was included, and withholds final payment pending a dispute over the original scope of work.
Migration data loss
An error during a content migration corrupts years of a client's blog and product data, requiring a costly manual rebuild.
What client contracts demand
- Minimum technology E&O and cyber limits in the statement of work
- Additional insured status for general liability on office-related claims
- Source code and intellectual property ownership clauses tied to final payment
- Proof of ongoing maintenance and patching responsibilities
- Retroactive date confirmation for claims-made coverage
Limits and retentions
Because a coding vulnerability can remain undiscovered for a long stretch after a project closes, developers should keep continuous claims-made coverage with a retroactive date that reaches back to their earliest active projects, since a lapse can leave older work unprotected. Aggregate limits matter for firms juggling several active e-commerce clients at once, since multiple simultaneous claims draw from the same annual limit.
States we serve for web developers
General Liability Insurance by state
Business Owners Policy by state
Employment Practices Liability Insurance by state
The coverage stack for web developers
Most owners in this class start here. A licensed agent will confirm what your contracts, state, and payroll actually require.
Cyber Liability Insurance
Responds to breaches of client customer data tied to vulnerabilities in code the developer built or maintains.
How it worksGeneral Liability Insurance
Covers third-party injury or property damage claims tied to an office space or client meetings.
How it worksBusiness Owner's Policy (BOP)
Bundles equipment coverage for computers and servers with baseline liability protection.
How it worksEmployment Practices Liability Insurance (EPL)
Covers claims from employees or contractors as a development shop grows beyond a solo operation.
How it worksWhat it typically costs
Web developer premiums are typically driven by revenue, the type of applications built (informational sites versus e-commerce or data-heavy platforms), and prior claims history.
| Business size | What drives the cost at this size |
|---|---|
Solo/freelance developer | Covers a basic E&O and cyber package for an independent developer. |
Small shop (2–10 staff) | Reflects broader client exposure and more complex applications built across a small team. |
Larger shop (10+ staff) | E-commerce platforms, higher client revenue dependency, and larger contracts drive costs up at this tier. |
Pricing is set by each carrier and varies by state, limits, payroll, and loss history — this is not a quote.
What moves your premium
- Annual revenue and average project value
- Whether projects involve e-commerce or sensitive customer data
- Ongoing maintenance and hosting responsibilities
- Use of subcontracted developers
- Prior claims history
Web Developers insurance questions
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