First up, your intention is laudable. It is extremely important that everyone know banking, at least the part of it that is needed in one’s daily life. Your aim of teaching her young will help her for the rest of her life.

So, you can open a post office savings bank in the name of your minor daughter. But she will only be able to operate it after she turns 10 years old.

Don’t get dissuaded by the fact that she will only be able to operate her account after two years. In the meanwhile, you can teach her the basics of banking, what credit and debit means, how interest is earned, etc. Once she develops interest in it, there’s no stopping her and her financial freedom.