ICMS Hike Increases Gasoline and Diesel Prices in Brazil

The new year starts off with a financial burden for Brazilian drivers as the ICMS (Imposto Sobre Circulação de Mercadorias e Serviços) on gasoline, diesel, and GLP has increased since January 1st. This tax hike was approved by Comfaz last September.

Key Takeaways

  • The ICMS rate for gasoline will rise to R$ 1,57 per liter from R$ 1,47.
  • Diesel prices increased by R$ 0.05 per liter, now costing R$ 1,17 per liter.
  • These changes reflect the average monthly fuel costs from February to August of last year compared to the same period in 2024.

The latest adjustment in ICMS rates is a direct reflection of rising global oil prices and increased domestic demand. This tax increase comes at a time when many Brazilian drivers are already feeling squeezed by high fuel costs, making this change particularly unwelcome for commuters and long-distance travelers alike.

For context, the previous adjustments to these taxes were made in 2018, following a period of significant economic instability. Back then, the government aimed to stabilize prices through gradual tax increases rather than sudden spikes that could have destabilized the market further. Today’s changes follow similar logic but under different circumstances.

It’s worth noting how these price hikes will affect daily commuters and commercial truck drivers who rely heavily on diesel fuel for their operations. The increase of R$ 0.10 per liter for gasoline might not seem substantial, but over time and with frequent refills, it can add up to a significant expense.

Frequently Asked Questions

When did the new ICMS rates go into effect?

The revised ICMS rates for gasoline and diesel went live on January 1st, 2026.

How were these price changes determined?

The adjustments are based on the average monthly prices of fuels from February to August in 2025 compared to those same months in 2024 as reported by ANP (Agência Nacional do Petróleo, Gás Natural e Biocombustíveis).

As we move forward into this new tax year, it’s clear that drivers will need to adjust their budgets accordingly. With the added cost of fuel, many might look towards more efficient vehicles or alternative modes of transportation.

James Carter
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Senior Automotive Journalist

Veteran automotive journalist with over 20 years of experience covering the global car industry. Specializes in comprehensive vehicle reviews, classic car coverage, and automotive history. Has test-driven over 500 vehicles and attended major auto shows worldwide.

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