For diesel, the discount will be just 0.09 pesos, so they will charge you 6.40 pesos per liter.
Every week the SHCP publishes in the DOF the federal IEPS quotas, by type of fuel, based on the prices in the global oil market, and gasoline and diesel in the United States, Mexico’s main fuel supplier country.
The Treasury grants a subsidy or discount to the IEPS quotas, if the price of fuels rises; if the price of fuel falls, the Treasury reduces the discount.
Last year, due to the rise in fuel prices, the Treasury granted large discounts or incentives to the IEPS fee, for which reason it reported falls in income from this tax.
However, this year, after the drop in fuel prices at the international level, the Treasury has decreased, and even disappeared, the incentives for the IEPS, that is, the IEPS fee has risen, so that the collection of this tax has recovered.