Measure of the effect (in relative terms) of domestic market and trade policies, overall market performance and public expenditure in support of the agricultural sector. The nominal rate of assistance is calculated the same way as the nominal rate of protection; however, public expenditure allocated to the commodity is added to the price gap at the farm gate. It can be computed in the observed or adjusted domain. Therefore, this indicator summarizes the incentives (or disincentives) due to policies, market performance and public expenditure.