Excess & Surplus Lines Insurance: A Broker's Guide
Excess & surplus (E&S) lines cover risks the standard market won't write — high-hazard classes, distressed accounts, coastal property, emerging industries, and large layered programs. Here's how E&S works and when it's the right path.
What "excess and surplus lines" means
"Excess and surplus" describes the segment of the insurance market that handles risks the admitted market declines. E&S carriers — also called non-admitted or surplus lines insurers — are approved to write business in a state but not licensed there. That regulatory flexibility lets them use custom forms, set their own rates, and underwrite risks that would be uneconomic for admitted carriers.
Admitted vs. non-admitted carriers
- Licensed in the state
- Forms and rates filed with regulators
- Backed by the state guaranty fund
- Standard, well-understood risks
- Approved but not licensed in the state
- Flexible, manuscript forms and pricing
- No guaranty fund — carrier financial strength matters
- Hard-to-place, high-hazard, or novel risks
When E&S is the right path
- Standard markets have declined or non-renewed the account
- Hazardous class of business (demolition, events, recreation, cannabis-adjacent)
- Catastrophe-exposed property (coastal wind, wildfire, quake)
- Vacant or distressed buildings, or non-standard occupancies
- Emerging industries with no admitted appetite yet
- Large limit needs requiring layered or quota-share towers
Wholesale brokers and MGAs
Most retail brokers don't have direct appointments with E&S carriers. They partner with wholesale brokers and managing general agents (MGAs) who do. The wholesaler shops the risk across the surplus market, negotiates terms, and handles surplus lines compliance. CommPro maintains direct wholesale relationships across property, casualty, professional, and environmental.
Surplus lines tax and diligent effort
Two compliance items separate E&S from standard placements:
- Surplus lines tax: a state premium tax (typically 2%–6%) collected by the surplus lines broker and remitted to the state.
- Diligent effort / due diligence: most states require documentation that the admitted market was offered the risk first and declined. The surplus lines broker maintains this record.
- Stamping fees apply in stamping-office states (e.g., FL, CA, TX, NY).
What to expect from an E&S quote
- More underwriting questions and supplemental applications
- Manuscript or proprietary forms (not ISO standard)
- Minimum earned premium provisions
- Subjectivities to bind (loss control, inspections, financials)
- Shorter or non-cancellable policy terms in some classes
FAQ
Often yes — E&S carriers price for risk the standard market won't take. But for many hard-to-place accounts, E&S is the only viable market.
Reputable E&S carriers are highly rated and financially strong (often AM Best A or better). The key difference is no state guaranty fund — so carrier selection matters more.
Through wholesale partners, yes. CommPro places E&S risks across property, GL, excess, professional, and environmental.