A surplus lines broker is a broker who is licensed to place coverage with nonadmitted insurers (insurers not licensed to do business in a given state).
Surplus lines insurers can write coverage through a surplus lines broker if the broker is licensed in the state where coverage is being written. The types of risks typically written by surplus lines brokers are generally substandard risks (e.g., risks with adverse loss experience), unusual risks, and risks for which there is a shortage of capacity in the admitted market.