There is no fixed “Age Limit” to become a TV actress in India or to start in this career. Even in the Indian TV industry, people of all ages are given continuous opportunities on the basis of requirements.
However, most TV actresses want to start their TV career from a very young age so that they already get all the necessary experience and exposure that can make them successful TV actress tomorrow.
This is also because the TV industry has started giving more priority to New Faces and Young Talent these days. This is the reason that the sooner you step into this industry, the more your chances of being successful will increase.