If you bought your health insurance without going through one of the exchanges brought into being by the Affordable Care Act, you might want to reconsider before doing it again. You could be leaving government money on the table.

A CBS News report says the Department of Health and Human Services estimates 2.5 million people bought off-exchange health care coverage for 2016, but might actually have income levels that qualify them for tax credits to help pay the premium.

The marketplaces provide customers with income levels up to four times the federal poverty level, or nearly $100,000 for a family of four, with tax credits to assist with covering the premiums. The lower a customer's income level, the greater the financial assist — but the catch is that the customer has to purchase health coverage through the exchanges to get the subsidy.