Requirement of level amortization Except as provided in regulations, this paragraph shall not apply to any loan unless substantially level amortization of such loan (with payments not less frequently than quarterly) is required over the term of the loan. (g) Employer deductions (1) In general For deductions related to employer contributions, see section 162. (2) Nondiscrimination Under regulations prescribed by the Secretary, notwithstanding section 162, no deduction shall be allowed for employer contributions to a portable retirement and investment account on behalf of an employee who is a highly compensated employee (as defined in section 414(q) 105(h)(5)) if the employer contributions made on behalf of all employees discriminate in favor of such employees who are highly compensated employees. (3) Certain controlled groups All employees who are treated as employed by a single employer under subsection (b), (c), and (m) of section 414 shall be treated as employed by a single employer for purposes of this subsection. (h) Inflation adjustment (1) In general In the case of any taxable year beginning in a calendar year after 2020, the dollar amounts under subsection (b) and subsection (c)(4) shall be increased by an amount equal to— (A) such dollar amount, multiplied by (B) the cost-of-living adjustment determined under section 1(f)(3) for the calendar year in which the taxable year begins, determined by substituting calendar year 2019 for calendar year 2016 in subparagraph (A)(ii) thereof. (2) Rounding rules If any amount after adjustment under paragraph (1) is not a multiple of $500, such amount shall be rounded to the next lower multiple of $500. . (b) Clerical amendments The table of sections for chapter 1 is amended by inserting after the item related to section 223 the following new item: Sec. 223A. Portable Retirement and Investment Accounts. . 6. Option to rollover (a) Rollover option (1) In general Any individual who holds an account described under paragraph (2) may elect to roll over the entire amount in