After 12th you need to give an CA -Common Proficiency Test (CPT) its a qualifying exam for CA. After clearing CPT you need to go for the IPCC Group I and II course and also need to complete a 3 years artcileship,100 hours ITT training and after this you get eligible for the CA Final Group I and II.

Hey there

It's good to see that you want to prepare for CA after 10th. See I'll advise you to take commerce with maths in 12th. After that you'll have to sit for CA foundation then only you can study for CA. You have enough time to prepare for the exam right now Don't take unnecessary pressure if you'll complete your 12th honestly you'll definitely crack ca foundation.

Check details about CA

https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.careers360.com/articles/4162-Chartered-Accountancy-CA/amp&ved=2ahUKEwjSub6xiMHlAhXLqY8KHevyC9MQFjAAegQIAxAB&usg=AOvVaw2eeWZxl833ey1fj0R5IMWw&ampcf=1

Good luck