The within the Federal Board of Revenue (FBR) is the official ranking system used to determine promotions, postings, and administrative eligibility for the highest offices in Pakistan's tax administration. This list is categorized by Basic Pay Scales (BS) , ranging from entry-level BS-17 up to the highest policy-making grade, BS-22. Understanding the IRS Seniority Structure

The seniority list is not static; it is frequently updated as "Provisional" lists to allow officers to file objections before a "Final" list is issued.

Includes Assistant Commissioners (BS-17), Deputy Commissioners (BS-18), and Additional Commissioners (BS-19). Top IRS Officers and Current Leadership (as of May 2026) FBR Officer Transfers Notification 2025 | PDF - Scribd

The top tier of the IRS. Officers in this grade typically serve as Members of the Board or in high-level federal secretarial positions.

Primarily serve as Commissioners of various Inland Revenue divisions.

These senior officers hold critical leadership roles such as Chief Commissioners of Regional Tax Offices (RTOs) or Members at FBR Headquarters.