The AOC wealth tax proposal is really a package of four separate tax changes aimed at the very top of the income and wealth distribution: a 2%–3% annual tax on household net worth above $50 million, a 70% top marginal income tax rate on earnings above $10 million, taxing long-term capital gains and qualified dividends at ordinary income rates, and a steep expansion of the federal estate tax. None of these have passed. The wealth tax piece also faces a serious, unresolved constitutional question that the Supreme Court has explicitly declined to answer.
The Annual Wealth Tax on Fortunes Above $50 Million
The centerpiece is the Ultra-Millionaire Tax Act, a bill led by Senator Elizabeth Warren that Alexandria Ocasio-Cortez co-sponsored.1Senator Elizabeth Warren. Warren, Jayapal, Boyle, 45+ Lawmakers Renew Push for Wealth Tax on Ultra-Millionaires and Billionaires It works on accumulated wealth, not yearly earnings. Household net worth between $50 million and $1 billion would be taxed 2% a year. Net worth above $1 billion would be taxed 3%.2Senator Elizabeth Warren. Warren, Jayapal, Boyle Reintroduce Ultra-Millionaire Tax on Fortunes Over $50 Million
That is a meaningful shift in how the federal government would tax rich people. A billionaire who earned no traditional income in a given year, living off existing assets and unrealized gains, would still owe 3% of their entire fortune. The tax reaches everything with measurable value: real estate, publicly traded stocks, private business interests, art, and other holdings.
Valuation is the practical headache. Public stock has a price you can look up. A private company, a rare painting, or a minority stake in a hedge fund does not. Applying professional appraisal to every billionaire’s full portfolio, every year, would be a large administrative undertaking layered on top of the existing tax system.
Offshore holdings are already covered by disclosure rules. Failure to report specified foreign financial assets triggers penalties starting at $10,000 and climbing by $10,000 every 30 days up to $50,000.3Office of the Law Revision Counsel. 26 USC 6038D – Information With Respect to Foreign Financial Assets A comprehensive wealth tax would almost certainly expand this kind of reporting to domestic holdings as well.
A 70% Top Income Tax Bracket Above $10 Million
In a January 2019 interview, Ocasio-Cortez floated a separate idea: a new federal income tax bracket taxing every dollar above $10 million at 70%. The current top marginal rate, once the Tax Cuts and Jobs Act expires at the end of 2025, is 39.6%.4Office of the Law Revision Counsel. 26 USC 1 – Tax Imposed It has never been introduced as standalone legislation.
The word “marginal” carries a lot of weight here. Someone earning exactly $10 million would see no change at all. A person earning $12 million would pay 70% only on the $2 million above the threshold. The first $10 million still runs through the existing brackets at lower rates. Effective tax rates on total income stay well under 70% even for the people the proposal targets.
For high earners whose money comes from investments, the picture gets steeper. The Net Investment Income Tax already adds 3.8% on top of ordinary rates for individuals with modified adjusted gross income above $200,000, or $250,000 for joint filers.5Office of the Law Revision Counsel. 26 USC 1411 – Imposition of Tax Stacked with the 70% bracket, the combined top rate on investment income above $10 million would reach 73.8%.
Capital Gains and Dividends Taxed Like Wages
Long-term capital gains and qualified dividends currently get preferential treatment. Hold an investment more than a year, and profit on the sale is taxed at 0%, 15%, or 20% depending on total income, rather than at your ordinary rate.6Internal Revenue Service. Topic No. 409, Capital Gains and Losses For someone in the top bracket, a stock sale is taxed at 20% plus the 3.8% NIIT, instead of 39.6%.
The framework Ocasio-Cortez has backed would eliminate that gap. Investment returns would be taxed at the same rates as wages. Combined with the proposed 70% bracket and the NIIT, capital gains on income above $10 million would jump from roughly 23.8% to 73.8%. That is the largest single rate change in the package for the people it targets, because most ultra-wealthy Americans get the bulk of their income from investments rather than paychecks.
One thing the proposal does not fix: the tax on capital gains only triggers when an asset is actually sold. Wealthy holders can borrow against appreciated stock instead of selling it, and the loan proceeds are not income. That workaround remains available under this framework.
Estate Tax Overhaul and the End of Stepped-Up Basis
The estate piece tracks the For the 99.8% Act, introduced by Senator Bernie Sanders and supported by Ocasio-Cortez. It does two things: cuts the exemption and raises the rates.
Right now, an individual can pass up to $15 million to heirs free of federal estate tax, and married couples can effectively shelter $30 million through spousal portability.7Internal Revenue Service. Estate Tax The bill would drop the individual threshold to $3.5 million. Estates above that face a progressive schedule, with the rate on amounts over $1 billion reaching 77%.8Congress.gov. S.309 – For the 99.8 Percent Act The current top estate tax rate is 40%.9Office of the Law Revision Counsel. 26 USC 2001 – Imposition and Rate of Tax
The bigger structural change is eliminating stepped-up basis. Under current law, when someone dies and leaves an appreciated asset to an heir, the basis resets to fair market value at the date of death.10Office of the Law Revision Counsel. 26 USC 1014 – Basis of Property Acquired From a Decedent If a parent bought stock for $100,000 forty years ago and it is worth $2 million at death, the heir inherits it with a $2 million basis. Selling the next day for $2 million produces zero capital gains tax. Decades of appreciation leave the tax system entirely.
Under the proposal, the heir inherits the original $100,000 basis. Selling for $2 million produces a $1.9 million taxable gain. Families whose wealth sits in real estate or private businesses that have appreciated across generations would face substantial bills at the time of sale or transfer.
The Constitutional Problem with a Wealth Tax
The income, capital gains, and estate pieces are policy fights, but they do not face serious constitutional barriers. Congress plainly has authority to set those rates. The wealth tax is different, because Article I of the Constitution requires that “direct taxes” be apportioned among the states by population. The 16th Amendment carved out an exception for income taxes. A tax on wealth is not a tax on income.
If a court classified the annual wealth tax as a direct tax, the revenue burden would have to be split proportionally by state population. A state with 10% of the population but 25% of the country’s billionaires could not be asked to shoulder 25% of the tax. That would make the whole structure unworkable.
Supporters argue the tax could survive review, either as an indirect tax or under a narrow reading of the Direct Tax Clause. The Supreme Court has not resolved it. In Moore v. United States, decided in 2024, the Court upheld a one-time tax on American shareholders’ portions of foreign corporate income, but stated explicitly that it was not deciding “the distinct issues that would be raised by taxes on holdings, wealth, or net worth.”11Supreme Court of the United States. Moore v. United States The majority reserved those questions “for another day.” Until the Court takes a wealth tax case directly, the constitutional viability is an open question that makes passage harder and enforcement uncertain.
How Much Would It Raise, and What Would It Cost
Revenue projections swing widely based on assumptions about tax avoidance. The Penn Wharton Budget Model estimated Warren’s wealth tax could raise between $1.4 trillion and $3.7 trillion over a decade. A no-avoidance scenario projected $4.8 trillion. An extreme-avoidance scenario dropped it to $1.4 trillion. That gap is the central uncertainty in any wealth tax estimate.
The same model projected the wealth tax could reduce GDP by 0.9% to 2.1% by 2050, driven by lower private capital formation, and reduce average hourly wages by 0.8% to 2.3% over the same period. Those long-run figures depend on whether revenue goes to deficit reduction or public investment.
The 70% income bracket, on its own, raises less than most people assume. Very few taxpayers report more than $10 million in ordinary income. Most top-end wealth flows through capital gains, carried interest, and business structures that never appear as taxable income under current rules. Without the companion change taxing capital gains as ordinary income, the 70% bracket is a narrow revenue measure.
Whether the IRS Could Actually Enforce It
None of this requires building an enforcement system from scratch. The IRS already imposes a 20% accuracy-related penalty on underpayments caused by negligence or substantial understatement.12Internal Revenue Service. Accuracy-Related Penalty Intentional evasion is a felony, punishable by fines up to $100,000 and up to five years in prison.13Office of the Law Revision Counsel. 26 USC 7201 – Attempt to Evade or Defeat Tax
There is also already an answer for the wealthy person who thinks about renouncing citizenship to escape the bill. Under the expatriation tax, anyone giving up U.S. citizenship or long-term residency with a net worth of $2 million or more is treated as having sold all their property at fair market value the day before leaving. Gains above a $910,000 exclusion are taxable immediately.14Internal Revenue Service. Expatriation Tax Proponents of the wealth tax have discussed strengthening these exit rules further, though specific legislative language has not been finalized.
The real bottleneck is IRS capacity. Auditing the global portfolios of ultra-high-net-worth individuals takes specialized expertise the agency has been losing to funding cuts for years. Any version of this package that becomes law would need a significant increase in IRS funding and staffing to be more than a set of rates on paper.