Senior IRS officers also lead regional field formations, which are pivotal for revenue targets. Notable top-ranking regional officers include: Mr. Nasir Iqbal Khan : Chief Commissioner, RTO Lahore. Mr. Qasim Raza Khan : Chief Commissioner, Corporate Tax Office Lahore. Mr. Muhammad Qureshi : Chief Commissioner, Bahawalpur. Mr. Shahid Mehmood Sheikh : Chief Commissioner, Quetta.