Upward Mobility Enhancement Act This bill amends the Internal Revenue Code, with respect to the exclusion for educational assistance programs, to increase the maximum amount of employer-provided educational assistance that may be excluded from the gross income of an employee. The bill: (1) specifies that the exclusion applies only to the first $11,500 of educational assistance furnished to an individual during a calendar year, in the case of assistance for education below the graduate level; and (2) requires the dollar amount to be adjusted for inflation after 2017. (Under current law, the exclusion applies only to the first $5,250 of educational assistance furnished to an individual during a calendar year and is not adjusted for inflation.)