You can deposit fund online in your PPF account if you have your PPF account in any bank. For most of the bank, you can transfer money from saving account to PPF account just like any other saving account. You just need to mention account number and payee name. It is always good practice to link your PPF account with your saving account, so that you can easily transfer fund from your saving account to PPF account with minimum steps and zero mistake.
Here is an example of SBI bank fund transfer method from saving account to PPf account. You need to mention amount, purpose and select PPF account to transfer fund to PPF account.
We all are very busy with our daily works. Many time you may forget to deposit money in PPF account and in last month of financial year you deposit fund to get tax benefit. So bank also offer auto debit or ECS facility. You just need to fill an ECS form where you have to mention amount and interval for fund transferring to your PPF account.
I think many of us already have PPF in bank or post office and some people must operating their PPF for many years. So which way do you follow? How do you deposit money in PPF account? Which process do you prefer to use in near future? I never heard about anyone or met anyone who uses ECS or auto debit facility to deposit money in PPF account, do you?