Billionaire Tax Bombshell Attacks Another State

California flag with a bear overlaid on a background of dollar bills

California’s radical billionaire tax is headed to the November ballot, and Gavin Newsom just failed to stop it.

Story Snapshot

A union-backed measure will let voters decide on a one-time 5% tax on California billionaires’ wealth.
Newsom tried and failed to keep the tax off the ballot, exposing deep Democrat divisions and donor pressure.
The tax applies retroactively to billionaires who lived in California on January 1, 2026, inviting legal fights.
Critics warn the plan could drive wealth and jobs out of the state and destabilize an already fragile tax base.

Radical Wealth Tax Heads to Voters After Newsom’s Maneuver Fails

California voters will now decide whether to hit about 200 billionaires with a one-time 5% tax on their total assets, after the measure qualified for the November ballot with more than enough signatures.^[5]^[12] The plan, called the 2026 Billionaire Tax Act, targets residents whose net worth topped $1 billion at the start of this year.^[12]^[14] Governor Gavin Newsom had vowed to block the initiative, but negotiations with union leaders collapsed, leaving the fate of the tax in voters’ hands.^[3]^[9]

Supporters, led by the healthcare workers union Service Employees International Union–United Healthcare Workers West, claim the tax could raise up to $100 billion.^[5]^[12] They say most of that money would shore up state healthcare, with the rest going to schools and food assistance after federal healthcare cuts under House Resolution 1.^[3]^[7]^[8] However, the $100 billion figure comes from campaign estimates, not a fully independent audit by the state’s nonpartisan analysts.^[2]^[15]

How the Billionaire Tax Works and Why It Alarms Many Californians

The ballot measure would amend California’s constitution to allow taxation of “all forms of personal property and wealth,” including stocks, bonds, business interests, and certain trust assets, for residents above the $1 billion threshold.^[13]^[14] Billionaires would owe a one-time 5% charge based on their worldwide net worth as of December 31, 2026, with payments spread over five years and an extra deferral cost on unpaid balances.^[14]^[15] Real estate directly owned, like a home, and normal retirement accounts are mostly excluded, but high-value retirement and trust assets can still be pulled into the tax.^[15]^[16]

One of the most controversial parts is the retroactive residency rule. Anyone who was a California resident on January 1, 2026 would owe the tax, even if they move away later.^[4]^[12]^[15] Backers argue this closes the “escape hatch” for billionaires who might flee to lower-tax states once the measure appears on the ballot.^[5]^[8] Legal experts warn this retroactive feature will almost certainly trigger court challenges on due process grounds, since it reaches back in time to tax wealth based on past residency.^[2]^[3]

Democrat Civil War: Unions vs. Newsom, Donors, and Party Establishment

This fight has opened a major split inside the Democratic Party in California and nationally.^[4]^[7]^[8] Progressive figures, including Representative Ro Khanna and Democratic Socialists groups, frame the tax as a “recalibration of the social contract” that finally forces extreme wealth to pay more for healthcare and safety net programs.^[4]^[6]^[18] California’s largest healthcare workers union gathered nearly double the signatures needed, betting that anger over inequality will carry the measure across the finish line.^[5]^[12]^[20]

Yet some of the state’s biggest labor organizations, like the California Teachers Association and Planned Parenthood affiliates, have come out against the tax.^[1]^[8] They argue that tying almost all new revenue to healthcare is too narrow and could actually destabilize funding for teachers, firefighters, and other core services.^[1]^[20] These unions, normally eager to tax the rich, warn that a huge one-time hit to a small group of taxpayers might make the state’s already volatile budget even more shaky over time.^[2]^[20]

Newsom’s Opposition, Billionaire Flight Fears, and National Stakes

Governor Newsom has slammed the plan as something that “makes no sense,” predicting “overwhelming opposition” once voters understand the details.^[1]^[2] He and business leaders warn that a sudden 5% grab on net worth will push billionaires and their companies to relocate, shrinking income tax and investment dollars that fund programs statewide.^[2]^[3] Newsom has said some wealthy residents are already leaving the state, though opponents note he has not produced audited data proving how many have moved because of the proposal.^[3]^[8]

JUST IN: Gov. Gavin Newsom failed to broker a deal to keep California’s controversial billionaire tax off the November ballot. And the fight is going to be nasty!

Tax backers: "Gov. Newsom is in lockstep with [President] Donald Trump and billionaires"https://t.co/j2nXcyNF0j

— Josh Koehn (@Josh_Koehn) June 26, 2026

Nationally, this battle matters because California’s initiative would be the first statewide wealth tax of its kind to reach voters, after similar plans stalled in places like New York and Washington.^[8]^[19] Supporters hope a win becomes a model for other blue states. Critics see it as a warning sign of what happens when aggressive “tax the rich” ideas collide with economic reality. For conservatives watching from freer states and from Washington under President Trump’s second term, California is once again a test case for heavy-handed government and class warfare politics.