The Congressional Budget Office (CBO) and the staff of the Joint Committee on Taxation (JCT) have estimated that about 30 million nonelderly residents will be uninsured in 2016, but the majority of them will not be subject to the penalty tax. Unauthorized immigrants, for example, who are prohibited from receiving almost all Medicaid benefits and all subsidies through the insurance exchanges, are exempted from the mandate to obtain health insurance. Others will be subject to the mandate but exempted from the penalty tax—for example, because they will have income low enough that they are not required to file an income tax return, because they are members of Indian tribes, or because the premium they would have to pay would exceed a specified share of their income (initially 8 percent in 2014 and indexed over time). CBO and JCT estimate that between 18 million and 19 million uninsured people in 2016 will qualify for one or more of those exemptions. Of the remaining 11 million to 12 million uninsured people, some individuals will be granted exemptions from the penalty because of hardship, and others will be exempted from the requirement on the basis of their religious beliefs.
After accounting for those who will not be subject to the penalty tax, CBO and JCT now estimate that about 6 million people will pay a penalty because they are uninsured in 2016 (a figure that includes uninsured dependents who have the penalty paid on their behalf) and that total collections will be about $7 billion in 2016 and average about $8 billion per year over the 2017–2022 period. Those estimates differ from projections that CBO and JCT made in April 2010: About two million more uninsured people are now projected to pay the penalty each year, and collections are now expected to be about $3 billion more per year.