Articles

10
MAY
2026

Al Jazeera

With food benefit cuts looming in the US, Californians eye billionaire tax

Giulia Varaschin, senior tax policy adviser at the International Tax Observatory, who recently coauthored a study on wealth taxes, says there is little academic evidence that such taxes cause the wealthy to leave at a notable scale.

9
MAY
2026

Le Soir

Gabriel Zucman: “Taxing capital gains is less effective than a wealth tax”

There is nothing radical about it. On the contrary, the proposal is minimalist. It is simply about correcting an anomaly in our tax systems, which allows very large fortunes to largely escape income tax.

5
MAY
2026

The New York Times

Is It Time to Tax the Oil and Gas Industry’s Windfall?

Chiochetti and her co-author Ninon Moreau-Kastler said a more effective structure could be based on a number that is “not manipulable.”

5
MAY
2026

Diario Financiero

Economists analyze measures to offset the effect of the tax cut proposed by Kast, and the effectiveness of a wealth tax returns to the debate.

The event began with the presentation of the report by the International Tax Observatory, delivered by the report’s coordinator, Vicente Silva, who put forward the proposal for a minimum tax on high-net-worth individuals in Latin America and the Caribbean.

27
APR
2026

Editoriale Domani

Gabriel Zucman: “Inequality? Like an avalanche. To stop it, my tax is needed.”

The current situation is unconstitutional and indefensible. In our countries, there is a principle of equality before the law. In taxation, this means that the wealthiest should not pay less tax.

22
APR
2026

Alternatives Economiques

Taxing excess profits in the oil industry is essential — and possible

During an energy crisis, like the current one with oil prices above 100 dollars per barrel, attention is first focused on prices and their impact.

21
APR
2026

Le Soir

In times of crisis, oil giants place one-fifth of their profits in tax havens

When commodity prices rise, the profits of extractive companies increase mechanically. In response, multinational corporations adjust their tax optimization strategies and shift a larger share of their profits to low-tax jurisdictions.

18
APR
2026

La Vanguardia

“Wealth tax must be applied without geographical exemptions”

But there is a solution today: the richest must continue to be taxed even after they have left the country.

17
APR
2026

Le Parisien

“We tax the rich”: in New York, Zohran Mamdani announces a tax on pied-à-terre properties worth $500 million

Zohran Mamdani has recently been accompanied by two progressive figures in economics: the 2001 Nobel Prize winner Joseph Stiglitz and the French economist Gabriel Zucman.

14
APR
2026

The Guardian

Tax day is a reminder of America’s unequal tax system. But we can fix it

There is no justification for a regressive system in which the super-rich contribute less than the rest of us. This is how inequality is deepened and sustained

Contact us

Have a question? A comment?
Want to know more?

Join Us

The International Tax Observatory is always interested in building new partnerships. Please contact us for further information.

Newsletter

Subscribe