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Objective: To compare the spending on foods of poor nutritional quality (ABCN for its acronym in Spanish) of Sonora and national households according to their income decile. Methodology: Based on the ENIGH 2016-2018 and by means of the ANOVA statistical technique of a single factor, we try to determine the differences in household spending between the different socioeconomic deciles. For the selection of foods of low nutritional quality, the criteria proposed by Darmon and Drewnosky (2008), and the energy contribution of foods by Ledwike et al (2006) were used. Results: Significant differences were found that show that households with low deciles spend more on ABCN than high deciles. Sonora has a high consumption of foods such as cookies and snacks. While spending on soft drinks is homogeneous in all socioeconomic deciles. Limitations: The ENIGH only allows the study of spending on energy products; it does not allow conclusions to be drawn on how many kilocalories the population consumes. Conclusions: Spending on food of low nutritional quality is significant among low-income households and is consistent with the results found by Darmon and Drewnosky in other European countries. [ABSTRACT FROM AUTHOR]