Accounting

More or less with Company Law.
Regards.

Hi Nitin,
Finance and accounting sector is doing good and immense opportunities are available. Your job and position will depend on the university reputation. In India, this matters the most, and then your grades, internship, networking, etc.

Decent choice to go ahead with, CMA USA is an added advantage for BBA students. Although, not recommended for MBA program if you're looking for.
Best of Luck.

The following article clearly defines the difference between MBA and Ph.D and its advantages and disadvantages:
https://www.shiksha.com/mba/articles/what-is-better-phd-in-management-or-mba-blogId-5230

Dear student,
First of all, there is no such specific specialisation in MBA as you mentioned so if you really want to make career in taxation, go for CA not MBA as specialisations in MBA are
finance
marketing
operations
international business
Now, coming to the best business schools in Mumbai:
JBIMS
SIMSREE
KJ Somaiya
P.L Welinkar
S.P Jain
All the best.

CWA is ac cost according which has a very good scope and offer good package in industry. CA is an accounting course which too has a good scope. Both are good but they are different.
All the best.

You have any options in commerce field and you can choose any of them:
B.Com
BBA
BBM
BCA
BCS
And other than these you have CA, CS, CMA, Hotel management, social working and bachelors degree like mass communication, photography courses and many other computer courses.