Sec. 2 Safe harbor for failure by individuals to pay estimated income tax In the case of a taxable year beginning in 2018— ⋯ (1) section 6654(d)(1)(B)(ii) of the Internal Revenue Code of 1986 shall be applied by substituting “80 percent” for “100 percent”; and ⋯ (2) the table in section 6654(d)(1)(C) of such Code shall be applied by substituting “100” for “110”. ⋯