Glossary / People & market / Surplus Lines

Surplus Lines

People & market

Insurance placed with non-admitted carriers for risks that admitted carriers won't cover.

Surplus lines insurance is coverage placed with non-admitted carriers when the standard (admitted) market can't or won't provide coverage. Common for startups in emerging industries. Requires a licensed surplus lines broker and may carry additional taxes.

Where you'll see it

QuotePolicy

Why it matters for your business

  • Many startup-focused policies are placed in the surplus lines market.
  • Surplus lines carriers often have more flexible underwriting.
  • Additional taxes (typically 3–5%, varying by state) apply to surplus lines premiums.

People also ask

What does surplus lines insurance mean?

Surplus lines insurance is coverage placed with non-admitted carriers when standard insurance companies won't or can't provide what you need. It's common for startups in emerging industries like AI or crypto, or for businesses with unique risk profiles. Surplus lines requires a licensed surplus lines broker and often carries additional state taxes beyond the standard premium.

Is surplus lines insurance more expensive?

Surplus lines insurance often costs more than standard coverage because it covers harder-to-place or higher-risk exposures. The premium reflects the specialized underwriting and increased risk the carrier accepts. Additionally, surplus lines policies typically carry a surplus lines tax (usually 2-6% depending on state) on top of the premium. However, it may be your only coverage option.

Do I need a special broker for surplus lines insurance?

Yes, surplus lines insurance must be placed through a broker licensed to handle surplus lines business in your state. Not all insurance brokers have this license. A surplus lines broker has access to non-admitted carriers and understands the compliance requirements, including filing and tax obligations, that come with placing coverage outside the standard market.

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Definitions are educational and may be modified by your specific policy language, endorsements, and state rules. For regulatory guidance, refer to the California Department of Insurance or the NAIC.

Reviewed by Andrei Craciunescu, CA Licensed Insurance Broker #4467994

Last updated: July 2026.