For households participating in the Supplemental Nutrition Assistance Program (SNAP), food expenditures spike upon benefit arrival. We show the price component of expenditure is sensitive to benefit arrival: by the beginning of the fourth week of the benefit month, households pay 20% less on food items. This decline is not induced by changes in shopping behaviors (usage of SNAP, bulk purchases, on‐sale, branded, and discount stores) but rather concentrated among a subset of households with financial constraints and/or a preference for higher‐quality foods. Increased benefit adequacy and/or financial stability for participants could help households smooth their purchasing power.