"Sec. 1   RCW 48.14.0201 and 2004 c 260 s 24 are each amended to read as follows:
     (1) As used in this section, "taxpayer" means a health maintenance organization as defined in RCW 48.46.020, a health care service contractor as defined in RCW 48.44.010, or a self-funded multiple employer welfare arrangement as defined in RCW 48.125.010.
     (2) Each taxpayer shall pay a tax on or before the first day of March of each year to the state treasurer through the insurance commissioner's office. The tax shall be equal to the total amount of all premiums and prepayments for health care services received by the taxpayer during the preceding calendar year multiplied by the rate of two percent.
     (3) Taxpayers shall prepay their tax obligations under this section. The minimum amount of the prepayments shall be percentages of the taxpayer's tax obligation for the preceding calendar year recomputed using the rate in effect for the current year. For the prepayment of taxes due during the first calendar year, the minimum amount of the prepayments shall be percentages of the taxpayer's tax obligation that would have been due had the tax been in effect during the previous calendar year. The tax prepayments shall be paid to the state treasurer through the commissioner's office by the due dates and in the following amounts:
     (a) On or before June 15, forty-five percent;
     (b) On or before September 15, twenty-five percent;
     (c) On or before December 15, twenty-five percent.
     (4) For good cause demonstrated in writing, the commissioner may approve an amount smaller than the preceding calendar year's tax obligation as recomputed for calculating the health maintenance organization's, health care service contractor's, self-funded multiple employer welfare arrangement's, or certified health plan's prepayment obligations for the current tax year.
     (5) Moneys collected under this section shall be deposited in the general fund through March 31, 1996, and in the health services account under RCW 43.72.900 after March 31, 1996.
     (6) The taxes imposed in this section do not apply to:
     (a) Amounts received by any taxpayer from the United States or any instrumentality thereof as prepayments for health care services provided under Title XVIII (medicare) of the federal social security act.
     (b) Amounts received by any taxpayer from the state of Washington as prepayments for health care services provided under:
     (i) The medical care services program as provided in RCW 74.09.035;
     (ii) The Washington basic health plan on behalf of subsidized enrollees as provided in chapter 70.47 RCW; or
     (iii) The medicaid program on behalf of elderly or disabled clients as provided in chapter 74.09 RCW when these prepayments are received prior to July 1, 2009, and are associated with a managed care contract program that has been implemented on a voluntary demonstration or pilot project basis.
     (c) Amounts received by any health care service contractor, as defined in RCW 48.44.010, as prepayments for health care services included within the definition of practice of dentistry under RCW 18.32.020.
     (((c))) (d) Participant contributions to self-funded multiple employer welfare arrangements that are not taxable in this state.
     (7) Beginning January 1, 2000, the state does hereby preempt the field of imposing excise or privilege taxes upon taxpayers and no county, city, town, or other municipal subdivision shall have the right to impose any such taxes upon such taxpayers. This subsection shall be limited to premiums and payments for health benefit plans offered by health care service contractors under chapter 48.44 RCW, health maintenance organizations under chapter 48.46 RCW, and self-funded multiple employer welfare arrangements as defined in RCW 48.125.010. The preemption authorized by this subsection shall not impair the ability of a county, city, town, or other municipal subdivision to impose excise or privilege taxes upon the health care services directly delivered by the employees of a health maintenance organization under chapter 48.46 RCW.
     (8) The taxes imposed by this section apply to a self-funded multiple employer welfare arrangement only in the event that they are not preempted by the employee retirement income security act of 1974, as amended, 29 U.S.C. Sec. 1001 et seq. The arrangements and the commissioner shall initially request an advisory opinion from the United States department of labor or obtain a declaratory ruling from a federal court on the legality of imposing state premium taxes on these arrangements. If there has not been a final determination by the United States department of labor or a federal court that the taxes are not preempted by federal law, the taxes provided for in this section become effective on March 1, 2005, or thirty days following the issuance of a certificate of authority, whichever is later. During the time period between March 1, 2005, or thirty days following the issuance of a certificate of authority, whichever is later, and the final determination by the United States department of labor or a federal court, any taxes shall be deposited in an interest bearing escrow account maintained by the (([self-funded])) self-funded multiple employer welfare arrangement. Upon a final determination that the taxes are not preempted by the employee retirement income security act of 1974, as amended, 29 U.S.C. Sec. 1001 et seq., all funds in the interest bearing escrow account shall be transferred to the state treasurer.

Sec. 2   RCW 48.41.090 and 2000 c 79 s 11 are each amended to read as follows:
     (1) Following the close of each accounting year, the pool administrator shall determine the net premium (premiums less administrative expense allowances), the pool expenses of administration, and incurred losses for the year, taking into account investment income and other appropriate gains and losses.
     (2)(a) Each member's proportion of participation in the pool shall be determined annually by the board based on annual statements and other reports deemed necessary by the board and filed by the member with the commissioner; and shall be determined by multiplying the total cost of pool operation by a fraction. The numerator of the fraction equals that member's total number of resident insured persons, including spouse and dependents, covered under all health plans in the state by that member during the preceding calendar year. The denominator of the fraction equals the total number of resident insured persons, including spouses and dependents, covered under all health plans in the state by all pool members during the preceding calendar year.
     (b) For purposes of calculating the numerator and the denominator under (a) of this subsection:
     (i) All health plans in the state by the state health care authority include only the uniform medical plan; ((and))
     (ii) Each ten resident insured persons, including spouse and dependents, under a stop loss plan or the uniform medical plan shall count as one resident insured person;
     (iii) Health plans serving medical care services program clients under RCW 74.09.035 are exempted from the calculation; and
     (iv) Health plans established to serve elderly or disabled medicaid clients under chapter 74.09 RCW when the plan has been implemented on a demonstration or pilot project basis are exempted from the calculation until July 1, 2009.
     (c) Except as provided in RCW 48.41.037, any deficit incurred by the pool shall be recouped by assessments among members apportioned under this subsection pursuant to the formula set forth by the board among members.
     (3) The board may abate or defer, in whole or in part, the assessment of a member if, in the opinion of the board, payment of the assessment would endanger the ability of the member to fulfill its contractual obligations. If an assessment against a member is abated or deferred in whole or in part, the amount by which such assessment is abated or deferred may be assessed against the other members in a manner consistent with the basis for assessments set forth in subsection (2) of this section. The member receiving such abatement or deferment shall remain liable to the pool for the deficiency.
     (4) If assessments exceed actual losses and administrative expenses of the pool, the excess shall be held at interest and used by the board to offset future losses or to reduce pool premiums. As used in this subsection, "future losses" includes reserves for incurred but not reported claims."