UberX is $1 more per mile than a taxi. Also, the minimum fare is $10 for UberX vs $3.50 for a cab. Uber Taxi charges a fixed 20% tip and $1 booking fee. Sourc

UberX is $1 more per mile than a taxi. Also, the minimum fare is $10 for UberX vs $3.50 for a cab. Uber Taxi charges a fixed 20% tip and $1 booking fee. Sources: https://www.uber.com/cities/san-francisco https://www.uber.com/cities/san-francisco http://www.sfmta.com/cms/xcust/indxtxcust.htm http://www.sfmta.com/cms/xcust/indxtxcust.htm