Brazil's Top Court Upholds State Laws That Sank Amazon Soy Pact

Brazil's Supreme Court has upheld state laws that deny tax incentives to soy traders who adhered to the Amazon soy moratorium, a ruling that effectively seals the fate of the voluntary agreement that helped curb deforestation for nearly two decades. The court simultaneously affirmed that the moratorium itself was constitutional.

The decision comes months after major grain traders withdrew from the pact in January, following the passage of state-level bills that revoked tax benefits for participating companies. The moratorium, launched in 2006, had barred the purchase of soy grown on Amazon land cleared after July 2008.

Brazil is the world's largest soybean producer, accounting for roughly 40% of global output, with significant cultivation in Amazon biome states such as Mato Grosso, Para, and Rondonia. The country produced 171.5 million metric tons of soybeans in the 2024-25 season, with China as the top export destination.

The Amazon rainforest plays a critical role in global climate regulation, and scientists warn that continued forest loss could accelerate warming and disrupt agriculture far beyond South America.

Soy producers had long argued the moratorium was stricter than Brazilian environmental law, which permits clearing up to 20% of land in the Amazon while requiring 80% preservation. The moratorium banned all deforestation, even when legally permitted.

Research published in the journal Science found the moratorium reduced deforestation in risk areas by 35% in its first decade without hurting productivity. The same study warned that its end could drive up to 1.4 million hectares of deforestation over the next decade.

Greenpeace Brazil legal coordinator Angela Barbarulo called the court's recognition of the moratorium's constitutionality "enormously important," but noted an apparent contradiction in validating state laws that could weaken its effectiveness. She cautioned against allowing state legislation to create loopholes that undermine collective environmental commitments.

The Brazilian Association of Vegetable Oil Industries (ABIOVE) said the ruling ends years of legal uncertainty and validates voluntary sustainability commitments, though the group referred to the moratorium in the past tense, suggesting the pact is unlikely to be revived. ABIOVE expressed hope the decision would open a new phase of dialogue focused on legal certainty, competitiveness, and sustainability.

The Mato Grosso Soy Producers Association, which opposed the moratorium, said the ruling reinforced state governments' authority to push back against private-sector measures imposing restrictions beyond legal requirements, and pledged to fight any future agreements recreating the moratorium's restrictions.