N.M. Stat. § 72-17-25
Sinking fund.
Whenever any indebtedness has been incurred by the authority, it shall be lawful for
the board to levy taxes and to collect revenue for the purpose of creating a reserve fund
in such amount as the board may determine, which may be used to meet the obligations
of the authority, for maintenance and operating charges and depreciation, and to
provide improvements for the authority.