(a) Payments may be based on fixed, set, or actual transportation rates. Fixed and set transportation rates will be established by FSA, based on available data for transportation costs for that commodity or input in the applicable State or insular region.

(b) Fixed transportation rates will establish per unit transportation costs for each eligible commodity or input used to produce the eligible commodity.

(c) Set transportation rates will be established for those transportation costs that are not on the FSA list of fixed rates and for which an actual rate cannot be documented. The set transportation rate will be set by FSA, based on available data of transportation costs for similar commodities and inputs.

(d) Actual transportation rates will be determined based on supporting documentation.