An Additional Commissioner of Income Tax is a high-ranking senior income tax officer in several countries.
Additional Director or additional Commissioner of Income Tax is a rank in the Indian Revenue Service (IRS). The officer holding this rank is above a Joint Commissioner or deputy commissioner of police and under a Commissioner of Income Tax.
In Pakistan, there is an Additional Commissioner of Income Tax in each range.
In Italy, the Additional Commissioner is a deputy to the Commissioner.
In Sweden, the Additional Commissioner of Income Tax means the head of a taxation range.