A study says Michigan residents who buy their own health insurance could see the biggest driver of premiums rise 26 percent under the federal health care law.
The Society of Actuaries says medical claims costs will jump an average 32 percent nationwide.
The report concluded most states will see costs increase in markets where people purchase coverage directly from insurers, partly due to sicker people joining the pool. The Obama administration says the study ignores subsidies to help with premiums.
Middle-class households can buy subsidized insurance in new marketplaces starting Oct. 1, while more low-income people may get Medicaid.
Michigan's market will be controlled by the federal government because the Legislature rejected Gov. Rick Snyder's proposed partnership. GOP legislators also are wary of Snyder's plan to expand Medicaid coverage.