Hello hello ,

I hope you are absolutely fine. As per your mentioned query, if you want to become income tax officer then you have to pursue undergraduate degree after 12th. After that you have to qualify UPSC exam or SSC CGL exam for the Indian Revenue Services. Then you will become income tax officer.

To know more about this kindly go through the given link :

 https://www.careers360.com/careers/income-tax-officer 

I hope this will be helpful for you!!