Upon his return in 1957, Tahir Ahmad married Asifa Begum and was appointed the vice president of the newly established Waqf-e-Jadid Foundation, whose main task was to educate community members who lived in rural areas of Pakistan.
During the Pakistani parliamentary investigations regarding the status of the Ahmadiyya Muslim Community, a delegation of five members, including Tahir Ahmad, was sent to plead the community's case.