90-5-107. Refunding of bonds. (1) Any bonds issued under the provisions of this part and at any time outstanding, including, without limitation, short-term bonds issued in anticipation of the issuance of long-term bonds, may at any time and from time to time be refunded by a municipality or county by the issuance of its refunding bonds in such amount as the governing body may deem necessary but not exceeding an amount sufficient to refund the principal of the bonds to be so refunded, together with any interest thereon and any premiums and commissions necessary to be paid in connection therewith. An issue of refunding bonds may be combined with an issue of additional revenue bonds on any project when the combined total meets the requirements of 90-5-106(1).
(2) Any such refunding may be effected whether the bonds to be refunded shall have then matured or shall thereafter mature, either by sale of the refunding bonds and the application of the proceeds thereof for the payment of the bonds to be refunded thereby or by exchange of the refunding bonds for the bonds to be refunded thereby. The holders of any bonds to be so refunded shall not be compelled without their consent to surrender their bonds for payment or exchange prior to the date on which they are payable by maturity date, option to redeem, or otherwise, or, if they are called for redemption, prior to the date on which they are by their terms subject to redemption by option or otherwise. Any refunding bonds issued under the authority of this part shall be subject to the provisions contained in 90-5-103 and may be secured in accordance with the provisions of 90-5-105.
(3) The principal proceeds from the sale of any refunding bonds may be applied only as follows, either:
(a) to the immediate payment and retirement of the bonds being refunded; or
(b) to the extent not required for the immediate payment of the bonds being refunded, such proceeds shall be deposited in trust to provide for the payment and retirement of the bonds being refunded and to pay any expenses incurred in connection with such refunding, except that provision may be made for the pledging and disposition of any surplus, including, without limitation, to the payment of the principal of and interest on any issue or series of refunding bonds.
(4) Money in a trust fund under subsection (3) may be invested in direct obligations of the United States government, obligations the principal of and interest on which are guaranteed by the United States government, or obligations of any agency or instrumentality of the United States government.
(5) Nothing in this section may be construed as a limitation on the duration of any deposit in trust for the retirement of bonds being refunded but that have not matured and that are not presently redeemable or, if presently redeemable, have not been called for redemption.