Learn how to buy HDFC Bank FASTag online and get it delivered at your doorstep. Find answers to common questions about FASTag application, documents, status and charges. To enable you to zip through the toll plaza without waiting in any queue, Hdfc Bank has introduced FASTag solution. It is a cashless solution that can be easily recharged through multiple e-payment modes such as Credit Card/ Debit Card and Internet Banking. Simply login with your Registered Mobile Number and OTP. To ensure a more secure experience, User ID and password login has been disabled. In case you have an HDFC Bank Savings or Current Account linked to FASTag wallet, balance will be transferred to the linked HDFC Bank account . 3. What do I do if there is an incorrect deduction on my FASTag balance ? If you feel you have been over-charged, you can report it to HDFC Bank.