Farmers' Access to Resources and Machinery Act This bill amends the Internal Revenue Code, with respect to private activity bond financing for first-time farmers, to (1) increase from $450,000 to $524,200 (adjusted annually for inflation) the amount of bond proceeds that may be used by a first-time farmer to acquire land for farming purposes, (2) repeal the separate dollar limitation on the use of bond proceeds for used farm equipment, and (3) modify the definition of "substantial farmland" to determine farm size by reference to the average (instead of median) size of a farm in the county in which the farm is located.