If you signed up for health insurance through HealthCare.gov, don't file your taxes quite yet. The government is asking a lot of people to wait to file after it sent out the wrong tax information to around 800,000 people. An additional 100,000 people who used California's healthcare exchange could be affected by a similar problem.
Andy Slavitt, a top administration official overseeing federal health insurance programs, said the administration is still investigating the root cause of the problem. Slavitt said it had to do with erroneous calculations of a "benchmark" premium that is used to help determine the amount of subsidies that individuals receive.
The government sent out some 1095-A tax forms that show what health insurance subsidies, if any, you received every month. If the tax info you received from Healthcare.gov includes errors, it could change your income tax refund amount. That's why the government wants affected users to wait until they receive corrected forms.