N.M. Code R. § 12.11.3.12
The records required in 12.11.3.11 NMAC shall be preserved at the branch office for a period of not less than five years, the most recent two years in an easily accessible place, except that customer new account forms shall be preserved for a period of not less than three years after the closing of the account. After a record or document has been preserved for one year as required under this subsection, a microfilm copy thereof may be substituted for the remainder of the required period.
[12.11.3.12 NMAC - Rp, 12 NMAC 11.2.6.5, 1-1-2010]