Unequal tax system: Tax Day shows super-rich pay less — we can fix it

Tax Day served as a sharp reminder of the unequal distribution of tax burdens in the United States, with Nobel laureate Joseph Stiglitz, economist Gabriel Zucman and New York Mayor Zohran Mamdani arguing that the super-rich benefit from public systems while contributing relatively less in taxes.

The commentary highlights New York as a case in point: the city’s average household income is cited at $131,000, yet extreme concentration of wealth has made large parts of the city unaffordable. The authors reference research showing that between 2000 and 2024 the richest 1% captured 41% of new wealth, and that billionaires now hold wealth equivalent to roughly 16% of global GDP; they also note that the 400 richest Americans paid about 50% of their income in taxes in the 1960s versus roughly 24% today.

For markets and public finances, the implications are tangible. The piece argues for targeted taxation of the very wealthy and large corporations to close budget shortfalls and fund essential services, pointing to measures such as New York’s pied-à-terre charge. It also notes political developments elsewhere in the U.S.: a proposed California ballot measure on billionaire wealth and Washington state’s approved 9.9% income tax on million-dollar incomes set to take effect in 2028, which together signal shifting fiscal priorities.

In a broader international context, the authors point to G20-commissioned work proposing a minimum 2% wealth tax on ultra-high-net-worth individuals as a straightforward instrument to ensure the super-rich pay their share. They argue that wealth relies on public goods—education, infrastructure, rule of law—and that fair taxation is essential to maintain social cohesion and political legitimacy.

Analysts suggest that while sweeping tax reforms face political resistance, growing public support could translate into incremental policy changes with material fiscal effects. For investors and policymakers, potential outcomes include altered capital allocation, changes in high-end real estate demand, and shifts in corporate tax planning; from a macro perspective, improved revenue collection could reduce financing pressures and support public investment if reforms are enacted effectively.