A self-funded multiple employer welfare arrangement must establish and maintain contribution rates for participation under the arrangement that satisfy either of the following requirements:

(1) Contribution rates must equal or exceed the sum of projected incurred claims for the year, plus all projected costs of operation of the arrangement for the year, plus an amount equal to any deficiency in the surplus of the arrangement for the prior year, minus an amount equal to the surplus of the arrangement in excess of the minimum required level of surplus; or

(2) Contribution rates must equal or exceed a funding level established by a report prepared by a qualified actuary.