Kinsale Capital Group In — Business Overview

What does Kinsale do?

Kinsale Capital Group is a U.S. property and casualty insurer that focuses exclusively on the "excess and surplus lines" (E&S) market. The E&S market is a specialized corner of insurance for risks that standard insurers refuse to cover — think newly formed businesses, high-risk operations, companies with poor loss histories, or businesses in lawsuit-heavy states. Because standard insurers won't touch these risks, E&S carriers like Kinsale have more pricing flexibility and can charge rates that reflect the actual risk without needing regulatory pre-approval.

The company writes a broad array of coverages, heavily weighted toward casualty insurance, and sells entirely within the U.S. In 2025, Kinsale generated $2.0 billion in gross written premiums (the total premiums charged before paying reinsurers their share). Casualty lines — covering liability risks — made up 70.7% of premiums, while property lines accounted for 29.3%. Commercial business dominated at 97.0% of premiums; personal lines (mainly high-value homeowners) made up just 3.0%.

How does Kinsale make money?

Kinsale earns money through two main channels: underwriting profits and investment income. Like all insurers, Kinsale collects premiums upfront and pays claims later — the gap between the two is the underwriting result. In 2025, Kinsale posted a combined ratio (the industry's key profitability measure — a number below 100% means the company made money just from underwriting, before investment returns) of 75.9%, which is exceptionally low. For context, the broader P&C industry averages around 100% or higher. The loss and loss adjustment expense ratio alone was 55.1%, and the expense ratio was 20.8%, both well below industry norms. Return on equity was 29.3% for 2025.

The float from collected premiums is invested in a conservative portfolio that generates additional income. Kinsale held $5.2 billion in cash and invested assets at year-end 2025, primarily in fixed-income securities (83.6% of the portfolio). The average duration of the bond portfolio was 4.0 years with an average credit rating of AA-, consistent with a capital-preservation approach. Equity securities — common stocks and ETFs — made up another 12.1% of the portfolio.

What market does Kinsale operate in?

The U.S. E&S insurance market is large and has historically grown faster than standard insurance. According to A.M. Best, total E&S direct written premiums were approximately $129.8 billion in 2024. Kinsale's 2025 gross written premiums of $2.0 billion represent roughly 1.5% market share — a relatively small slice of a large pie. From 2001 to 2024, E&S direct premiums grew at 10.0% annually versus just 4.7% for the broader P&C industry.

Several trends structurally favor the E&S market. When natural catastrophes become more frequent and severe, standard insurers pull back from risky coverage and push more business into the E&S channel — directly expanding Kinsale's opportunity set. Additionally, newly emerging industries (electric vehicles, cannabis, gig economy workers) often can't find coverage in the standard market, creating fresh demand for E&S carriers. The E&S market has also historically operated at lower loss ratios — averaging 68.7% from 2001 to 2024, versus 73.6% for the broader P&C industry.

Who are Kinsale's main competitors?

The E&S market is competitive and includes some of the largest insurers in the world. Kinsale's named competitors include American International Group (AIG), Berkshire Hathaway, Chubb, Fairfax Financial, Lloyd's of London, Markel Group, RLI Corp., and W. R. Berkley. These are well-capitalized institutions, some with significantly greater financial resources than Kinsale.

Kinsale differentiates itself through a low-cost operating model, proprietary technology, and tight underwriting control. Its 20.8% expense ratio in 2025 is a standout — competitors relying on program managers or general agents to distribute policies typically pay those intermediaries higher commissions, raising their costs. Kinsale pays an average broker commission of 14.8% of premiums, which it claims is slightly below the industry average. Crucially, Kinsale never delegates underwriting or claims authority to outside brokers or third parties, meaning every risk is individually evaluated in-house. The company also targets smaller accounts (average premium of $14,000 per policy, excluding personal lines), which it believes attract less competition from larger rivals focused on bigger deals. Kinsale's insurance subsidiary holds an A.M. Best rating of "A" (Excellent), which is important for broker and client confidence.

Where does Kinsale operate?

Kinsale operates exclusively in the United States, with meaningful concentration in California, Florida, and Texas. All 720 employees are based at the company's headquarters in Richmond, Virginia. Policies are sold in all 50 states, Washington D.C., Puerto Rico, and the U.S. Virgin Islands through independent brokers. There is no international underwriting or manufacturing exposure.

The top three states alone account for nearly half of all premiums written. California, Florida, and Texas together represent 49.0% of gross written premiums. Florida in particular carries elevated natural catastrophe (hurricane) exposure, which Kinsale manages through reinsurance arrangements and by limiting per-policy property limits — the majority of property business is written with limits of $5.0 million or less.