In March, state officials issued a report estimating that, compared with what individual policies cost now, premiums may rise an average of 30% for many middle-income residents who don't get their insurance through their employers.
At the same time, lower-income consumers will reap the biggest savings and are projected to save as much as 84% off their coverage thanks to federal subsidies.
In California, individuals earning less than about $16,000 will qualify for an expansion of Medi-Cal, the state's Medicaid program for the poor. Above that threshold, individuals making less than $46,000 and families earning below $94,000 annually will qualify for federal subsidies.
Starting in January, most Americans will be required to have health insurance or face a penalty.