A differential item functioning (DIF) analysis of the Moral Foundations Questionnaire (MFQ) was performed using a Swedish sample (N = 1,038) separated into multiple ideological ingroups, following respondents’ self-reported party preference. Under the assumption of two latent dimensions, the Individualizing and the Binding dimension, and after removing 4 items that could not be used in the DIF procedure, the result shows that a total of 16 items were flagged with DIF effects. Of these, 12 belonged to the Binding scale. Accounting for DIF impact on scale scores showed that the MFQ is largely fair but the results also indicate group-level effects. Foremost, naïve scores for followers of the Christian Democrats, on both scales, and Sweden Democrats, on the Binding scale were inflated. In the opposite direction on the Binding scale, we find naïve scores for followers of the Green party deflated. Regarding item content, the non-DIF items from the Individualizing foundations had content referring to victim compassion and egalitarian values. In contrast, non-DIF items from the Binding foundations had content referring to respect for authority and decency.