The US property and casualty fronting market has grown tenfold in a decade, but the reinsurance backing much of that growth is becoming less reliable. That is the central finding of a new AM Best special report.
The report, titled "Front" and Center: A Review of the Property/Casualty Fronting Market, estimates upwards of $30 billion in premium was generated through fronting arrangements in 2025. Fronting involves an admitted, licensed insurer issuing a policy, and passing most or all of the risk to a reinsurer. The problem AM Best identifies is who that reinsurer increasingly is: an offshore entity, an unauthorized captive, or an unrated carrier using the fronting structure to access business its own rating would otherwise deny it.
When a reinsurer fails to pay, the fronting carrier must honor the policy regardless. That counterparty risk now sits across an estimated $30 billion premium pool.
Fronting's expansion tracks the growth of managing general agents (MGAs). According to AM Best's analysis of NAIC data, MGAs now generate $108.7 billion of US P/C premium - approximately 10% of the overall market. Fronting companies have been the primary mechanism enabling MGA programs to access admitted paper and rated capacity quickly.
The specialist fronting segment has grown from about $1.8 billion to nearly $20 billion in direct written premium since 2015, recording double-digit growth in every year through 2025, according to the report. That expansion has drawn pressure from reinsurers, who have responded by pushing fronting carriers to retain more risk. AM Best says this demand is particularly common in specialized MGA programs.
"It is critical to note that the fronting company assumes the counterparty credit risk since it would be required to honor the obligations imposed by the policy if the cedent fails to indemnify it," said David Blades, associate director at AM Best.
When a fronting carrier cannot recover from its reinsurer, it absorbs the loss itself. A financially stretched carrier is one that may exit a program, restructure its terms, or fail entirely. Those outcomes directly affect the agencies and brokers whose clients hold the policies.
Conning's August 2026 fronting sector study sharpens that picture. Its analysis found that initial gross accident-year loss ratios have developed adversely in each of the past seven accident years. The loss picture fronting programs report early has consistently proven too optimistic once claims mature.
Five carriers have already exited or de-emphasized fronting, and two more have a pending combination under common ownership. "By requiring higher retentions, reinsurers are striving to ensure underwriting discipline as fronting companies execute risk selection decisions," said Greg Williams, managing director at AM Best. That pressure, combined with softening pricing, puts carriers that built their books during the hard market on less familiar ground.
The AM Best report covers 16 rated organizations whose primary operation is fronting. It notes that an estimated 30 organizations in total carry fronting operations - a broader population whose credit quality AM Best does not fully track.
As the sector matures, the structural questions AM Best and Conning are raising about counterparty quality and program stability are ones brokers placing MGA business cannot defer to the next renewal.
