Minimum tax proposal on extreme wealth gains strength in Latin America
A study released on May 14, 2024, as reported by AFP, indicates that the implementation of the so-called “Zucman tax” in Latin America is considered feasible.
The survey indicates that seven countries in the region could raise about US$ 24 billion annually, equivalent to R$ 123.89 billion.
The measure would affect only about 3,000 individuals, within a population of approximately 500 million inhabitants.
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Those who earn up to R$ 5,000 no longer pay Income Tax since January 2026, and retirees over 65 years old are exempt up to R$ 6,903 in a change that benefits 16 million Brazilians.
The proposal focuses taxation on an extremely small segment of the population, with focus on large fortunes.

How the minimum tax on extreme wealth would work
The report, based on data from the International Fiscal Observatory, proposes a tax of 2% on assets above US$ 100 million.
A broader alternative proposes a rate of 3%, raising revenue to US$ 36 billion per year.
The study, commissioned by Brazil, aims to correct distortions in the tax system.
The proposal intends to ensure that the super-rich contribute proportionally to their economic capacity.
Inequality and tax burden at the top of income
The study points out that the richest 1% pays proportionally less taxes than the poorest 50%.
The analysis conducted by Vicente Silva, an inequality specialist, identifies this regressivity in countries like Brazil and Chile.
The effective rates paid by the super-rich are almost half of the average for the population.
The wealth of fortunes above US$ 1 billion has increased six times in the last 25 years, intensifying the debate on taxation.
G20 and the global Zucman tax proposal
The topic gained international prominence in 2024, during Brazil’s presidency of the G20.
The French economist Gabriel Zucman, associated with the International Fiscal Observatory, presented a global proposal.
The initiative involves a tax of 2% on assets over US$ 1 billion, with a potential revenue of US$ 200 billion to US$ 250 billion annually.
At the summit held in Rio de Janeiro in 2024, G20 countries committed to act in a cooperative manner in taxing large fortunes.
Economic impact and return on wealth
Large fortunes record average returns of 8% per year, according to Zucman.
The implementation of a 2% tax would have a limited impact, only partially reducing these gains.
The measure would not significantly compromise the wealth of the richest.
Still, it could generate relevant revenue to face fiscal challenges.
Political challenges and resistance to the proposal
The implementation of the tax faces political resistance and strong polarization, as highlighted by Vicente Silva.
There is technical capacity to implement the measure, but there is a lack of political will.
Consolidated narratives, such as the idea that reducing taxes for the wealthy stimulates growth, hinder the advancement of the proposal.
A study from the London School of Economics indicates that there is no evidence, in the last 50 years, that tax cuts for high incomes boost the economy.
Risk of tax evasion and capital flight
The risk of mass tax exodus is considered low, according to Silva.
High-net-worth individuals maintain businesses, networks, and economic interests in their countries.
The proposed model includes exit mechanisms, which reduce possible impacts of changing tax residence.
The so-called tax competition is treated as a political issue, which can be addressed with appropriate instruments.
Is Latin America ready to advance in taxing the super-rich, or will the debate remain stalled by political and economic barriers?

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