Short answer: An AHP lets small businesses or self-employed people band together through an association to buy health coverage as a larger group, potentially at better rates. Their availability and rules have shifted with changing federal regulations.
Association Health Plans allow employers (often within an industry or region) to join together so they’re treated more like a single large group, which can lower administrative costs and sometimes premiums. Depending on how an AHP is structured and regulated, it may not have to include all ACA small-group protections, which is part of the appeal and part of the risk. Federal rules governing AHPs have changed repeatedly through litigation and rulemaking, and some operate as MEWAs subject to state oversight, so availability varies by state and over time. Evaluate the coverage and the sponsor’s stability carefully.