N.M. Code R. § 3.5.16.8
A. Section 7-4-2 NMSA 1978 defines the term “sales” to mean all gross receipts of the taxpayer not allocated under Sections 7-4-5 through 7-4-9 NMSA 1978. Thus for the purposes of the sales factor of the apportionment formula for each trade or business of the taxpayer, the term “sales” means all gross receipts derived by the taxpayer from transactions and activity in the regular course of such trade or business. The following are rules for determining “sales” in various situations.
D. If the returns or reports filed by the taxpayer with all states to which the taxpayer reports under the Uniform Division of Income for Tax Purposes Act or Article IV of the multistate tax compact are not uniform in the inclusion or exclusion of gross receipts, the taxpayer shall disclose in its return to this state the nature and extent of the variance.
[1/15/1974, 9/15/1988, 9/20/1993, 1/15/1997; 3.5.16.8 NMAC - Rn & A, 3 NMAC 5.16.8, 6/29/2001]