of an individual in the balance of his account is nonforfeitable. (5) The assets of the trust shall not be commingled with other property except in a common trust fund or common investment fund. (c) Eligible individual For purposes of this section, the term eligible individual means any individual who is— (1) not less than 18 years of age, and (2) a citizen or legal permanent resident of the United States. (d) Treatment of contributions and distributions (1) Contribution limit (A) In general The aggregate amount of contributions (other than qualified rollover contributions described in subsection (e)) for any calendar year to all Universal Savings Accounts maintained for the benefit of an eligible individual shall not exceed $5,500. (B) Cost-of-living adjustment (i) In general In the case of any calendar year after 2018, the $5,500 amount under subparagraph (A) shall be increased by an amount equal to— (I) such dollar amount, multiplied by (II) the cost-of-living adjustment determined under section 1(f)(3) for the calendar year, determined by substituting calendar year 2017 for calendar year 1992 in subparagraph (B) thereof. (ii) Rounding rules If any amount after adjustment under clause (i) is not a multiple of $500, such amount shall be rounded to the next lower multiple of $500. (2) Distributions Any distribution from a Universal Savings Account shall not be includible in gross income. (e) Qualified rollover contribution For purposes of this section, the term qualified rollover contribution means a contribution to a Universal Savings Account from another such account of the same beneficiary, but only if such amount is contributed not later than the 60th day after the distribution from such other account. (f) Treatment of account upon death Upon death of any individual for whose benefit a Universal Savings Account has been established— (1) all amounts in such account shall be treated as distributed on the date of such individual's death, and (2) such account shall cease to be treated as a Universal Savings