This study investigates populist radical right (PRR) influence on aid amid widespread concerns about a potential connection between its rise and the reduction of aid allocation. Previous studies failed to address these concerns owing to the disuse of immigrant inflows as an intervening variable and a bilateral framework capable of investigating properties in donor and recipient countries. By analyzing panel data on Western European parliamentary democracies, the study demonstrates the PRR’s reducing effect via a coalitional pathway on bilateral aid to the recipients, failing to stem emigration into the donor countries. Further, analysis shows that such reduction intensifies in conjunction with the donors’ weak pluralistic institutions and the recipients’ sociocultural characteristics different from the ordinary citizens represented by the PRR. The findings make a novel contribution to the expanding literature on the PRR to integrate insights on the aid–immigration nexus, strategies for policy influence, and ideational profiles.