Toll-Tax is charged by NHAI & respective authorities for using National & State Highways.
Your booking confirmation email clearly details out if Toll taxes are included for your defined itinerary or if they are excluded from your total fare. When Toll taxes are stated as excluded from your trip confirmation email, the guest/customer is expected to pay the toll taxes at the toll booths encountered on your journey. When listed as included, the toll tax is prepaid by the customer as part of their total fare.
For one-way trips, your travel route is well defined and known to us. So as a convenience to our guests/customers we include the Toll tax amount in your booking fare. As a result you do not need to pay anything extra - driver will take care of the toll tax payments as long as you are traveling as per the plans defined on your itinerary (listed in your booking confirmation).