20 ILCS 3805/21
The Authority shall create and establish a special fund to secure the Housing Development Bonds issued under this Act. The fund shall be designated as "the capital reserve fund."
The Authority shall pay into the capital reserve fund: (a) all moneys specifically appropriated, earmarked or made available by gift, grant, or otherwise, from any source, public or private, for the purposes of meeting expenditures authorized from such fund; (b) any proceeds of sale of notes or bonds, to the extent provided in the resolution of the Authority authorizing the issuance thereof; (c) any moneys transferred into the fund by the Authority from any other fund authorized by this Act, in such amounts and at such times as the Authority deems necessary for the purposes of this fund; and (d) any other income or moneys available to the Authority from any other source or sources for the purpose of such fund.
All moneys held in the capital reserve fund, except as hereinafter provided, shall be used solely for the payment of the principal or annual sinking fund payment of bonds of the Authority as the same mature, the purchase of bonds of the Authority, the payment of interest on such bonds of the Authority or the payment of any redemption premium required to be paid when such bonds are redeemed prior to maturity. Moneys in the capital reserve fund shall not be withdrawn at any time in such amount as would reduce the amount of the fund to less than the maximum amount of principal and interest or annual sinking fund payment, whichever is less, maturing and becoming due in any succeeding calendar year on all bonds of the Authority then outstanding, except for the purpose of paying principal of and interest on bonds of the Authority becoming due, whether at maturity or by annual sinking fund payment, and for the payment of which other moneys of the Authority are not available. Any income or interest earned by, or increment to, the capital reserve fund due to the investment thereof may be transferred by the Authority to the general fund or any other fund of the Authority to the extent it does not reduce the amount of the capital reserve fund below the maximum amount of principal and interest or annual sinking fund payment, whichever is less, maturing and becoming due in any succeeding calendar year on all bonds of the Authority then outstanding. For purposes of this Section the word "bonds" shall mean only those bonds of the Authority issued for the purpose of making mortgage loans to nonprofit corporations and limited-profit entities to finance multi-family rental and cooperative developments and designated as "Housing Development Bonds" by the Authority.
20 ILCS 3805/21