Few people enjoy paying taxes, but many voters support making the superrich pay their “fair share.” Governments can raise income taxes or levy annual or one-off wealth taxes on assets above a set threshold. Some aim to reduce inequality or lower middle‑class burdens; others seek revenue to fill budget gaps. Philosophers also argue that extreme wealth no longer increases individual well‑being and should be limited.
Defining the rich varies. Ultra-high-net-worth individuals typically hold at least $30 million in investable assets; the superrich often have $300 million or more. In US politics, proposals to raise taxes on top earners are resurfacing. US Senator Elizabeth Warren once backed an “ultra‑millionaire tax” on holdings above $50 million. Former presidential candidate Mitt Romney has publicly said the wealthiest Americans must contribute more, calling out capital-gains loopholes. Local proposals include New York City’s mayor suggesting a city income tax increase on income above $1 million and Washington state lawmakers passing a tax on income over $1 million pending the governor’s signature. These measures matter because the US houses the most millionaires and billionaires and is the world’s largest economy.
Experts say taxing the superrich is fair and can be economically efficient. Brian Galle, a tax law professor at UC Berkeley, argues that concentrating so much wealth in a few hands gives them outsized political and economic influence, which can harm democracy and economic stability. But practical obstacles remain. Current tax systems often tax gains only when assets are sold, letting wealthy households defer taxes by selling little of their assets and choosing when to realize gains.
A direct alternative is a wealth tax: summing all assets and taxing the net value. Since 1965, 13 OECD countries have used net wealth taxes, but only four still do, including Norway, Spain and Switzerland. Historically these levies raised little revenue relative to costs, created administrative headaches and faced legal challenges. Germany’s Constitutional Court found its wealth tax violated equality principles in 1995, and the country suspended the levy in 1997. The Dutch Supreme Court ruled in 2021 that the Dutch model breached European property‑rights and non‑discrimination law.
Valuing wealth annually is difficult. Cash is straightforward, but homes, private jets, art, collectibles and business stakes are hard and costly to appraise every year. A wealth tax may discourage saving and investment, potentially harming entrepreneurship. It can also prompt capital flight: after a small increase in Norway’s wealth tax, some high‑net‑worth individuals reportedly relocated to Switzerland and the UK. Galle notes good legal design can make tax avoidance harder, but mobility remains a concern.
California is considering a high‑profile test: a proposed one‑time 5% tax on people with more than $1 billion in net worth could appear on the November ballot. If approved, it would be a major experiment in a state that ranks as one of the world’s largest economies. Supporters say it would raise substantial revenue; critics warn it would drive billionaires to states without such levies, like Texas, Florida or Nevada. A key worry is taxing unrealized gains and illiquid assets, which could force owners to sell homes or controlling shares in companies to pay the tax.
Governments have many taxing options, but designing taxes to capture extreme wealth while minimizing evasion, legal challenges and economic side effects is complex. Whether through income adjustments or wealth levies, policymakers must balance fairness, administrative feasibility and economic consequences.
Edited by: Rob Mudge
