Several states have raised taxes on high-income residents in recent years to generate more revenue for public services such as education, transportation, and child care.
The taxes are not broad wealth taxes. They apply to income through surtaxes or higher top tax rates, often called millionaires taxes. Experts said a true wealth tax would apply to total net worth, including assets such as real estate, stocks, and business holdings, even if those assets were not sold. No U.S. state currently has a broad-based wealth tax.
Massachusetts, California, New York, Washington, and New Jersey have all increased taxes on top earners.
Supporters said the policies have raised significant revenue from the highest-income households, in some cases generating billions of dollars for public programs and services.
Critics cited data they said showed declines in adjusted gross income, or AGI, in several states after tax increases. California and New York reported billions of dollars in net AGI losses in certain periods.
Washington and New Jersey also reported mixed results. Washington adopted a capital gains excise tax. New Jersey increased its top income tax rate for residents earning more than $1 million and added taxes on luxury property sales. Both states saw strong revenue in some years, alongside concerns in others about income and resident outflows.
Critics argued that some high-income residents may have moved to lower-tax states such as Florida and Texas.
Supporters said higher taxes on wealthy residents were needed to fund schools, infrastructure, transportation, and child care, and to address income inequality while supporting state budgets.