The Selective Consumption Tax (ISC) does not only tax final consumption; it also applies to production inputs such as fuel, machinery, and certain intermediate goods, driving up the costs of transportation, production, and final prices. The proposal calls for restructuring the ISC, reducing tax rates on non-luxury goods, and reserving the heaviest tax burden for consumption with negative externalities or luxury goods, with the aim of expanding the formal economy, broadening the VAT base, and increasing tax revenue without increasing the tax burden on production.