Chartered Accountancy or CA is a professional course that requires immense hard work and strong determination. While pursuing a professional course like CA, your primary focus should be on CA only.

Anyways,if you want to pursue an additional course alongwith CA then the most preferred choices of CA students are :

1. CA with a Bachelors degree like B. Com or B. com(Honours).
2. CA and CS(Company Secretary) is also a common choice.
3. CA followed by an MBA is also gaining popularity these days.
4. CMA,CPA,CFA etc. are few other options that basically depend upon your own areas of interests.

Moreover,the choice of an additional course should be based on how well you can manage different courses simultaneously