An Introduction The Income Tax Department implements direct tax rules, and the IRS plays a vital role in this process. India's Income Tax Department has more than 75,000 personnel working in 550 offices around the country. Planning is essential to preparing for exams like the Indian Administrative Service (IAS). This article explains the many duties and functions of the Indian Revenue Service, as well as the IRS post in UPSC . Understanding IRS Exam UPSC's responsibility is to recruit for the Revenue Department through the Indian Revenue Service test (IRS). Government of India's internal revenue service (IRS). Group A is in charge here. To collect and manage direct and indirect taxes, the IRS is part of the Department of Revenue in the Union Ministry of Finance. The IRS has two divisions: ● IRS (Income Tax) ● IRS(Customs and Central Exci...