Maintaining a sufficient balance on your FASTag is crucial to avoid double toll deductions and delays at toll plazas. Fortunately, there are several convenient ways to recharge your FASTag online without needing to visit a bank or toll booth. The quickest method involves using UPI apps such as Google Pay, PhonePe, or Paytm. Each FASTag has a unique UPI ID, formatted as NETC.VehicleNumber@bankname, which can be used to recharge in just four steps: enter the UPI ID, specify the amount, and confirm the transaction. If the recharge does not reflect immediately, it may be due to a typo in the UPI ID. Other methods include using the issuing bank's app, the NHAI My FASTag app, or setting up auto-recharge for frequent travelers. Each method typically updates the balance almost instantly, but keep in mind that recharges must be in multiples of ₹100, and minimum balance requirements vary by bank.