Should the government tax unrealized gains?

An unrealized gain is an increase in the value of an asset or investment that an investor has not sold, such as an open stock position. A proposal in the Biden-Harris Administration’s 2025 budget would require households with more than $100 million in wealth to pay income taxes of at least 25 percent of their annual income, including their unrealized capital gains — gains in the value of assets that they have not yet sold. Critics argue that unrealized capital gains, which are a primary source of income for many extremely wealthy households, are mere “paper” gains that do not constitute real income (though they meet a textbook definition of income). Proponents argue that unrealized gains make asset owners (such as Jeff Bezos and Elon Musk) rich unless they sell their companies’ stock.