Surcharge rate.
(n) Surcharge rate. Effective January 1, 1991, and on the first of each subsequent calendar year, the Board will add to each employer's rate of contribution, as computed under 345.303 of this part, a surcharge rate of 1.5, 2.5, or 3.5 percent if the accrual balance to the credit of the Account, as of the preceding June 30, falls within the range of balances set forth in Steps 1 and 2 of this paragraph (n). The Board will determine which surcharge rate, if any, is in effect for a calendar year by means of the following computation: