Some consumers who bought their health coverage through the public exchange system in 2014 or 2015 may have to refile their tax returns.
Related: Second ACA tax season rumbles to a close
The Internal Revenue Service explains the rules in a new batch of advice aimed at exchange-plan users who get corrected or voided Form 1095-A health insurance exchange coverage notices for 2014 or 2015.
The Affordable Care Act (ACA) provides a tax credit subsidy for some people who get their health coverage through the ACA public exchange system.
An ACA exchange is supposed to use 1095-A forms to help consumers document whether they bought health coverage through the exchange and how much, if any, subsidy money they received.
Many exchanges reported having trouble sending accurate 1095-A forms to users in a timely fashion for the 2014 benefit year. The IRS says one major error led to 800,000 tax filers receiving inaccurate 1095-A forms for 2014.
This year, managers of many public exchange programs have reported that sending out 1095-A forms for the 2015 benefit year went smoothly.
The Centers for Medicare & Medicaid Services, the agency that runs the HealthCare.gov exchange enrollment system for many states, said in February that it had gotten its 1095-A forms for 2015 out the door.
The executive director of the District of Columbia Health Benefit Exchange Authority reported in May that the D.C. exchange had mailed 16,762 1095-A forms for 2015, corrected 75 in response to requests from consumers and corrected 780 in response to requests from carriers.