This paper examines how affective and ideological polarisation shape political trust in Europe. Affective polarisation is measured through three individual-level indicators, which capture relational distrust across key social boundaries: partisan affective polarisation as distrust of supporters of other political parties, religious boundary polarisation as distrust of people of another religion, and national identity polarisation as distrust of people of another nationality. These indicators are treated separately to capture distinct and different dimensions of social division. Ideological polarisation is addressed at two levels. At the individual level, we calculate the absolute distance between each respondent’s left–right self-placement and the national average, thereby capturing the ideological marginality. At the country level, we include the Dalton Index of left–right positions to capture ideological dispersion in the population. To isolate these effects, the presented models control for key individual-level covariates: education, income, age, and left–right ideology. At the country level, we include GDP per capita and perceived corruption as performance-related controls.