I need ride but just have cash
The Guru Take
Generally not, but Uber started accepting cash in limited cities
For taxis, yes, almost all companies/drivers in all location would accept cash.
If you are referring to Uber and Lyft, they currently do not allow you to pay in cash, as the mobile app requires you to have your credit card or debit card in the system.
There are certain Uber services and in certain regions, cash can be used in lieu of the credit card on file. They are usually local taxis that you dispatch through Uber app (i.e. UberTaxi), but recently, Uber is starting to acecpt cash in more and more US cities.
Check out the "payment options" and if you see "CASH", that means they will allow it. You simply hand the cash over to the driver at the end of the trip. (https://help.uber.com/h/cae4b926-03d6-4ebf-81c4-75953ef54c0c)