The Specific Rules on Taxation and Tax Benefits of Oil Operations (Regime EspecÃfico de Tributação e de BenefÃcios Fiscais das Operações PetrolÃferas Â? Â?RETBFOPÂ?), approved by Law no. 27/2014
of 23 September, were recently amended by Law no. 14/2017 of 28 December, which came into force on 1 January 2018.