Enrollment opens Nov. 1. For coverage effective Jan. 1, people need to pick a plan by Dec. 15. With a few exceptions, the last day to sign up for Obamacare is Jan. 31, 2017. Plans are available on HealthCare.gov and state-run exchanges.

While the average premiums on the benchmark health plans are increasing, the government says more than 70 percent of people buying insurance on the marketplaces created by the law could get a health plan for less than $75 a month for 2017. To get the best deal, people would have to pick a low-cost plan with limited benefits and take advantage of all the subsidies available.

People who already have coverage through the exchanges can often save money by switching plans, the administration said. More than three-quarters of people could save money by switching to the lowest-cost plan within the level of coverage, such as bronze or silver, that they’ve previously selected.

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