Diesel soars and the Treasury takes out the fiscal patch
The price of fuel for trucks and heavy transport has already exceeded the barrier of 30 pesos per liter at some pumps. The official response was immediate, but it came with its own instruction manual.
The Ministry of Finance announced a fiscal stimulus for the week of March 14 to 20. Translation: a reduction in the IEPS tax of 35.21%, equivalent to 2.59 pesos less per liter.
With this, consumers, especially motor carriers, will pay an IEPS fee of 4.7710 pesos instead of 7.3634 pesos.
What support does and does not cover
Here comes the first but. The announcement published in an evening edition of the Official Gazette is specific: only applies to diesel. Premium and Magna gasoline are left out.
For Magna there is a special agreement between the government and the stations so that it does not exceed 24 pesos per liter. A price ceiling due to courtesy of the sector.
The curious thing is the timing. Throughout 2025 and so far in 2026, this same stimulus had been suspended, remaining at zero. The policy says that it is activated when prices exceed inflation… but one wonders what metric they use and when they review it.
The stated objective is to avoid a sudden adjustment event in prices – what we all know as gasoline – by transferring the burden to the State.
The selective memory of DOF
This Friday the weekly agreement did not appear in the morning edition of the Official Gazette. He left in the afternoon. A minor detail, if it weren’t for the fact that it has precedent.
The last time the SHCP did not publish the agreement in the DOF was on March 4, 2022, when oil prices reached an all-time high due to Russia’s attacks against Ukraine.
At that time, when the subsidy limit was exceeded, a complementary stimulus was created for gas station entrepreneurs who supported by lowering prices: they could credit or subtract ISR or request a VAT refund.
Today the mechanism is different, but the choreography is repeated: prices rise, late announcement, exclusion of some fuels. The formula to calm the waters seems more rehearsed than spontaneous.




