a. The Director of the Division of Taxation is hereby authorized to adjust the rate of the surtax imposed pursuant to section 76 of this 1990 amendatory and supplementary act, for any of the calendar years in which the surtax is imposed, as provided in this section.

b. The Director of the Division of Taxation, in consultation with the Commissioner of Insurance, shall, on or before the first day of the second month following enactment of this 1990 amendatory and supplementary act, prepare an estimate of the revenues anticipated to be collected from the surtax imposed pursuant to section 76 of this 1990 amendatory and supplementary act, at the rate established thereby, and credited to the New Jersey Automobile Insurance Guaranty Fund, for each of the three calendar years in which the surtax is imposed. These estimates shall be reviewed and, if appropriate, revised, on or before the first day of the month immediately preceding the due date for the second installment payment for the first calendar year in which the surtax is imposed and each subsequent installment payment and each final payment required to be made pursuant to section 76 of this 1990 amendatory and supplementary act. Such review and revision shall be based upon information available to the director and the commissioner, including actual surtax collections as reflected in final payments.

c. At any time that the estimates prepared and revised pursuant to subsection b. of this section reflect total estimated surtax revenues in excess of, or significantly less than, $300,000,000 for the three calendar years in which the surtax is imposed, the director shall provide that the surtax be imposed at a different rate, such that the total estimated revenues are as near as possible to, but do not exceed, $300,000,000, provided, however, that the rate shall not exceed 5%. That different surtax rate shall be imposed on premiums collected in the first calendar year for which final returns and final payments have not yet been made and, subject to the director’s determination, may be reflected in installment payments which have not yet been made.

d. On or before April 1, 1993, the director shall make a final determination of the total amount of revenues collected under the surtax imposed pursuant to section 76 of this 1990 amendatory and supplementary act for the three calendar years in which the surtax is imposed. The director shall refund any such revenues collected in excess of $300,000,000 to taxpayers in proportion to each taxpayer’s share of total surtax payments made for the three calendar years.

L.1990,c.8,s.77.