(a) Tax Imposed- In the case of any individual who does not meet the requirements of subsection (d) at any time during the taxable year, there is hereby imposed a tax equal to 2.5 percent of the excess of--
`(1) the taxpayer's modified adjusted gross income for the taxable year, over
`(2) the amount of gross income specified in section 6012(a)(1) with respect to the taxpayer.
The sections cited in these letters are sections of Title 26, the Internal Revenue Code, and they may be verified at this website of the Cornell University Law School.
So, the jail time may be applied if a person refuses to buy insurance, making themselves subject to the tax, and then refuses to pay the tax. In every case, passage of H.R. 3962 increases costs for every American by at least 2.5 percent of their taxable income, and perhaps by as much as five years of their life.