System unallocated charge balance.
(p) System unallocated charge balance. This balance, as computed initially for the period January 1 through June 30, 1990 and updated as of June 30 of each subsequent calendar year, represents the net amount of expenditures from, and income to, the Account that cannot be allocated as benefit charges, or adjustments, to the cumulative benefit balances of individual base year employers. The Board computes this balance, as of June 30 of each year, as follows: