Sec. 13A. MUNICIPAL CONTRIBUTIONS. (a) Beginning with the year 2017 effective date, the municipality shall make contributions to the fund as provided by this section and Section 13B, 13C, 13E, or 13F of this article, as applicable. The municipality shall contribute:

(1) beginning with the year 2017 effective date and ending with the fiscal year ending June 30, 2018, an amount equal to the municipal contribution rate, as determined in the initial risk sharing valuation study conducted under Section 13C of this article and adjusted under Section 13E or 13F of this article, as applicable, multiplied by the pensionable payroll for the fiscal year; and

(2) for each fiscal year after the fiscal year ending June 30, 2018, an amount equal to the municipal contribution rate, as determined in a subsequent risk sharing valuation study conducted under Section 13B of this article and adjusted under Section 13E or 13F of this article, as applicable, multiplied by the pensionable payroll for the applicable fiscal year.

(b) Except by written agreement between the municipality and the board providing for an earlier contribution date, at least biweekly, the municipality shall make the contributions required by Subsection (a) of this section by depositing with the fund an amount equal to the municipal contribution rate multiplied by the pensionable payroll for the applicable biweekly period.

(c) With respect to each fiscal year:

(1) the first contribution by the municipality under this section for the fiscal year shall be made not later than the date payment is made to firefighters for their first full biweekly pay period beginning on or after the first day of the fiscal year; and

(2) the final contribution by the municipality under this section for the fiscal year shall be made not later than the date payment is made to firefighters for the final biweekly pay period of the fiscal year.

(d) In addition to the amounts required under this section, the municipality may at any time contribute additional amounts for deposit in the fund by entering into a written agreement with the board.

(e) Notwithstanding any other law, the municipality may not issue a pension obligation bond to fund the municipal contribution rate under this section.