Minimum annual contributions of Rs 500 are required to keep the account active otherwise the account turns dormant. To reactivate a dormant PPF account, you have to visit the bank branch or post office where your account is held, and submit a written request. For each financial year that the account has remained dormant, a penalty of Rs 50 is levied, which must be paid to initiate the reactivation process. You also have to pay the minimum deposit amount of Rs 500 for each year your account has been inactive. Once the verification process is carried out, your PPF account will be reactivated.