NM tax-free weekend on Aug. 2-4 Azure Michell /News-Sun Back-to-school shopping is all the buzz with tax-free weekend’s upcoming arrival. At 12:01 a.m. Aug. 2, shops will welcome customers looking to score items free of tax. This event will end on the following Sunday, Aug. 4. Tax-free weekend is placed on select items, such as, clothing or shoes less than …