Mexico’s Soda Tax Sparks Debate On Health Policy, Hidden Revenue

Mexico’s higher taxes on sugary drinks that took effect at the beginning of 2026 have revived controversy over whether the measure genuinely serves public health goals or operates primarily as a disguised revenue mechanism, as global health authorities promote similar taxes while critics question their real impact on consumption and government spending.

“Health taxes are one of the strongest tools we have for promoting health and preventing disease,” said Tedros Adhanom, Director-General, World Health Organization (WHO), in January, as the organization urged governments to raise taxes on sugary drinks and alcohol to curb harmful consumption and generate resources for health systems. Mexican authorities have echoed that argument in defending the latest increase to the Special Tax on Production and Services (IEPS).

The reform, approved by the Chamber of Deputies in October 2025 and in force since Jan. 1, 2026, nearly doubled the specific tax on beverages with added sugar from MX$1.64 to MX$3.08 per liter and extended the same rate to drinks containing artificial sweeteners. Tobacco taxes were also raised, with cigarettes now facing an ad valorem rate of 200%. Finance officials estimate the changes will generate about MX$41 billion in additional revenue in 2026.

Federal authorities say the objective is to discourage consumption linked to obesity, diabetes and other noncommunicable diseases in a country where more than 76% of adults are overweight or obese. David Kershenobich, Minister of Health, said the reform is part of a broader strategy that includes front-of-pack warning labels, school nutrition policies and fiscal measures aimed at reshaping dietary patterns without harming the productive sector.

However, the tax has reignited public skepticism. Some consumers argue that higher prices have not reduced soda consumption but have increased household expenses. Critics also point out that while the government frames the levy as a health policy, the legislation does not explicitly earmark the revenue for health spending.

That gap has fueled accusations that the tax is primarily revenue-driven. Jorge Smeke, Academic, Universidad Iberoamericana, said governments often favor targeted consumption taxes because they are politically easier than raising broad-based taxes such as value-added tax. Guillermo Mendieta, Fiscal Specialist, Mexican Institute of Public Accountants, said that if the levy were truly designed for health purposes, the law should require that the funds be allocated exclusively to prevention and care.

Rafael Lozano, Professor and Researcher, National Autonomous University of Mexico (UNAM), said evidence from the original 2014 soda tax showed a reduction in sugary drink purchases during its early years, particularly among lower-income households. However, he said the revenue flowed into general government accounts because it lacked a specific health designation, and promised complementary measures, such as installing drinking water fountains in public schools and expanding prevention programs, were not fully implemented.

Internationally, the WHO argues that Mexico’s approach aligns with global efforts to address weak health-related tax systems. In recent reports, the organization said sugary drinks and alcohol have become more affordable in many countries because taxes have not kept pace with inflation and income growth. The WHO estimates that median sugary drink taxes worldwide account for only about 2% of retail prices, despite public support for higher levies.

Yet critics in Mexico question whether international guidance fully reflects local outcomes. Civil society organizations, including El Poder del Consumidor, Salud Justa Mx and Fundar support higher taxes in principle but argue the current rate remains below the WHO-recommended threshold of 20% of the final price. They have called for raising the levy to about MX$7 per liter and for creating a dedicated health fund to ensure transparency in how the resources are used.

Industry responses have focused on reformulation rather than opposition. Beverage companies have expanded low- and zero-calorie offerings, citing regulatory pressure and changing consumer preferences. PepsiCo, for example, has reported calorie reductions and the introduction of zero-calorie versions of several brands as part of its global strategy.