Commodities transaction tax applies to sales of commodity derivatives and options, with liability assigned to purchaser or seller. Commodities transaction tax is levied on specified taxable commodities transactions effective from 1 April 2018, charging tax on the value of listed transactions and specifying whether the seller or the purchaser is liable. The statutory table identifies taxable events-sales of commodity derivatives, derivatives based on prices or indices, options on commodity derivatives, and options in goods-and distinguishes exercise outcomes that affect liability and the applicable charge.