Hello student ,
To become an income tax inspector a candidate must have a bachelor degree from any stream of a recognised university or college .
Maximum age requirement for this 27 years while minimum age limit is 18 years .
Else a candidate should first of all enter the Income Tax Department as Income Tax Inspector or Tax Assistant. After that he will be get promotion to the designation of Income Tax Officer after qualifying the departmental examination. At last through interview you will be selected as an income tax inspector .
Hope it will help you !