Hey Aspirant,

Hope you are doing great,

As you want to know about the  stream which is good for the IRS officer. The minimum requirement is a bachelor's degree in any field, so you can pursue any course. It is preferable to major in commerce, with Business Economics and Accountancy as electives. One route is to enter the Indian Revenue Service via Civil Services examinations.

For more information about the IRS officer:

https://www.careers360.com/careers/indian-revenue-service-officer

I hope this will help you,

Best of Luck :)

Nice to know that you want to be an IRS and wish you Best of luck.

Now regarding your question, I would say there is no such subject which can ensure your chances more. See UPSC is an examination which requires a special attention that is to get a job through UPSC you need to study specifically as per the UPSC syllabus. Thus there are no options available that can ensure you more about the selection. I would recommend you that you should take the subject you like the most. This is a very important point because if you take the subject you like then while studying it you will not feel bored or get exhausted. This will help you to study your academic subject as well as your preparation for UPSC. So take the subject you like the most.

Now you can take some subjects which are in your UPSC syllabus like BSc Geography, Economics or BCOM.  But I assure you that the things you will learn in any of the courses will not be needed exactly in your UPSC preparation. Instead you will find that foundational knowledge to the subject is important. This is the reason why I stated that you should pursue the subject you like and keep a focused plan for your UPSC preparation.

To know more about UPSC visit the link below:

https://competition.careers360.com/exams/upsc-civil-services-exam

I hope my answer helps. All the very best for your future endeavors!