In response to your request, the Congressional Budget Office and the staff of the Joint Committee on Taxation (JCT) have analyzed the budgetary effects of H.R. 1185, the FAMILY Act, as introduced on February 13, 2019.
H.R. 1185 would provide family and medical leave benefits for eligible people and impose a 0.4 percent payroll tax that would be split evenly between employers and employees. CBO estimates that enacting the bill would increase direct spending by $547 billion over the 2020-2030 period—$521 billion for benefits and $27 billion for program administration (see Table 1). JCT estimates that enacting the payroll tax would increase net federal revenues by $319 billion over the 2020-2030 period. (The new payroll tax would raise a total of $361 billion over the period, but that amount would be offset by a reduction of $42 billion in income tax revenues.) In total, we estimate that the bill would increase the deficit by $228 billion over the 2020-2030 period.