If you are thinking that how to invest in Mutual Funds, always keep in mind that it is mandatory to have an account in any bank, KYC / CKYC PAN and Aadhaar card etc. is also mandatory. Such a provision was made so that unscrupulous investors could not carry out illegal acts like black money laundering through mutual funds. Some banks and mutual funds have the same parent company i.e., both are part of the same corporate group but where banks are under RBI and governed by them, mutual funds are operated and controlled by SEBI. You will find many mutual fund companies that have the same name and the name of a certified bank, but remember that both are separate companies and their work and operations are separate and completely independent from each other. It is not necessary for you to open a savings account in the bank in whose name you are going to invest in a mutual fund or in any other similar institution.
Banks also act as a distributor for various mutual funds who cross sell the mutual funds among their customers. Although banks do not have all the mutual funds available in the market, they sell those mutual funds through their distribution with whom they have tie-up. You can also invest in such mutual funds, which are not linked with the banks which are instrumental in selling them, such as your bank in which you have an account.