What is a company called that writes only one line of insurance?

A company that writes only one line of insurance is referred to as a monoline company. This term indicates that the insurer specializes in a specific type of insurance product, such as auto, homeowners, or health insurance, rather than offering a range of different coverage options across multiple lines. By focusing on a single line of insurance, monoline companies can develop expertise, tailor their products to meet the needs of their specific market, and efficiently manage their underwriting processes. This specialization can be advantageous for consumers who are looking for targeted coverage options and for agents who aim to provide specific solutions for their clients.

In contrast, a multiline company offers a variety of insurance products, covering multiple lines. Specialty companies often focus on niche markets or unique risks but may cover more than one type of insurance. General companies typically provide a broader range of insurance solutions but are not exclusive to one line of coverage. This distinguishes the monoline company’s focus and operational model, making it clear why this definition is the most accurate choice.