Argentina Resumes Fuel Tax Increases After April War Freeze

The Argentina fuel tax regime is caught between two of the Milei government’s core commitments — fiscal balance and inflation control — as the Iran war forces uncomfortable choices at the pump.

The Rio Times, the Latin American financial news outlet, reports that President Javier Milei signed Decree 302/2026 on Thursday, unfreezing fuel taxes from May 1 after a full month of suspension. The increase will be limited to 0.5% for gasoline and diesel, with the larger backlog of adjustments accumulated since 2024 and 2025 deferred once again — this time to June. The decree was signed by Milei, Economy Minister Luis Caputo, and Cabinet Chief Manuel Adorni.

Why Argentina Fuel Tax Policy Has Become So Complex

Under Argentine law, fuel taxes are updated quarterly based on consumer price inflation. When Milei took office in December 2023, the taxes had been frozen for two years under his predecessor. He pledged to normalize them, but the combination of high inflation and rising global oil prices has forced repeated partial deferrals since May 2024.

The Iran war and Hormuz blockade made things dramatically worse. Brent crude spiked above $126 on Thursday — its highest since 2022 — and Argentine pump prices surged 23% in March alone. The government froze the tax entirely in April, arguing that adding a fiscal charge on top of war-driven prices would be unbearable for consumers.

The Fiscal Cost of Deferral

The repeated postponements have a price. Consultancy Economía y Energía estimates that the cumulative deferrals through 2025 cost the treasury approximately $2.3 billion in foregone revenue. Fuel taxes accounted for 15.83% of the final pump price and generated 1.4 trillion pesos in Q1 2026 alone — growing 55.9% year-on-year, more than double the overall revenue increase of 22.7%.

The government wants to fully normalize the tax schedule by year-end 2026, partly to ensure a cleaner baseline for the 2027 election year when they hope to return to standard quarterly adjustments. But each month of deferral makes the eventual catch-up larger and more politically painful. Meanwhile, YPF and other producers agreed to a 45-day price buffer starting April 1, absorbing the war-driven price surge rather than passing it through — a mechanism that expires in mid-May.

What It Means for Inflation and Markets

For investors, the decree illustrates the bind that even the most fiscally hawkish government in Latin America faces when global energy shocks collide with domestic price sensitivity. Milei’s fiscal surplus — the signature achievement of his first year — depends on revenue normalization, but every tax increase feeds directly into the inflation index that his central bank is trying to bring down. The May compromise of 0.5% represents the narrowest possible path between those two imperatives.