You cannot make such a binary comparison between IPM and CA.
You will learn topics from a variety of fields in this program, including math, science, economics, sociology, psychology, law, accountancy, and the arts. The PGDM curriculum that follows teaches you the fundamentals of finance, marketing, human resources, operations, information technology, etc., and prepares you to specialize in any subject of your choice. Regardless of your academic performance, you will be able to spend 5 years at an IIM after graduation. This strengthens your character in a way that is impossible in CA, where you must make all of your own preparations. You'll be able to interact with the best minds in the nation all at once thanks to it. Early exposure to cultural differences is crucial for the development of your personality and professionalism. The fact that IPM students receive the same treatment as PGDM students place a great deal of responsibility on them.
CA is a professional program that develops your accounting skills and offers competitive pay. However, doing so necessitates independent study, which calls for strong self-discipline. It lacks the social learning component, which must be made up for in another way.
You should choose IPM and pursue CFA, actuarial, or another type of certification intermittently. Many people have chosen to do this, and the outcomes have been very positive; they have been hired by prestigious financial institutions like JPMC, DE Shaw, Nomura, etc.