The Treasury Inspector General for Tax Administration (TIGTA) is an office in the United States Federal government.

[1] TIGTA's audits, investigations, and inspections are designed to promote the fair administration of the Federal tax system.

[1] TIGTA's Office of Investigations protects the integrity of the IRS and its ability to collect tax revenue.

Special agents will conduct all leads to prove or disprove the elements of the violation, or to show that the issue cannot be resolved.

[1] Heather M. Hill is the acting Treasury Inspector General for Tax Administration, following the death of J. Russell George.