contributions The Executive Director shall pay into the USAccount Fund such amounts as are contributed under section 4(c). (f) Prohibition on Use of Payroll Taxes To Fund USAccounts The USAccount Fund and USAccounts are wholly separate and unique from the Social Security system. No amount from any tax on employment may be contributed to the USAccount Fund or USAccounts. 4. USAccounts (a) In general (1) Establishment The Executive Director shall establish in the USAccount Fund an account (to be known as a USAccount ) for each qualifying account holder certified under subsection (b). Each such account shall be identified to its account holder by means of a unique personal identifier currently recognized by the Internal Revenue Service and shall remain in the USAccount Fund unless transferred to private management under subsection (g). (2) Account balance The balance in an account holder’s USAccount at any time is the excess of— (A) the sum of— (i) all deposits made into the USAccount Fund and credited to the account under paragraph (3), and (ii) the total amount of allocations made to and reductions made in the account pursuant to paragraph (4), over (B) the amounts paid out of the account with respect to such individual under subsection (d). (3) Crediting of contributions Pursuant to regulations which shall be prescribed by the Executive Director, the Executive Director shall credit to each USAccount the amounts paid into the USAccount Fund under section 3(d) which are attributable to the account holder of such account. (4) Allocation of earnings and losses The Executive Director shall allocate to each USAccount an amount equal to the net earnings and net losses from each investment of sums in the USAccount Fund which are attributable, on a pro rata basis, to sums credited to such account, reduced by an appropriate share of the administrative expenses paid out of the net earnings, as determined by the Executive Director. (b) Qualifying account holder For purposes of this Act— (1) In general The term qualifying