Tap your contactless credit or debit card, smartphone, or wearable device at the OMNY reader as you enter. On local, limited, and express buses, you must enter and use the reader at the front door. On SBS buses, enter at any door and use the reader there.
If by chance, you find yourself without an MTA card on you, you can still pay the Bus single-ride fare ($2.75) aboard the bus, but make sure you have coins with you, no banknotes are accepted, only exact change and no pennies!
Apple Pay is accepted on trains and buses throughout NYC. With your credit or debit card in Wallet, you can easily get where you need to go with just your iPhone or Apple Watch.
Pay with CashExact change is accepted on buses that do not have All-Door Boarding. Transfers are not included. To ride Metro Rail, you must pay with a TAP card.
You will just be charged from where you boarded to the last stop (which is probably at the station). Assuming you alighted quite a few stops back, the cost would probably range from 0.70 to a dollar. Try to remind yourself to tap out next time! :-) How do I travel in a bus?