Will a Billionaire Tax Cost California Its Richest Residents?

California could be on the brink of a major fiscal shift as voters prepare to decide on a proposed wealth tax targeting the state’s billionaires.

The measure would impose a one-time 5% tax on the net worth of roughly 200 ultra-wealthy residents, potentially generating up to $100 billion over five years, according to supporters.

Backers of the proposal say the revenue would help stabilize public services, including health care and education, after years of budget pressure and federal funding cuts. Labor groups behind the initiative argue that California’s wealthiest residents can shoulder a larger share of the tax burden without harming the broader economy.

But critics warn the plan could have unintended consequences. Tax advisers and political opponents say some billionaires are already exploring ways to change their residency ahead of the vote, raising concerns that California could lose significant long-term tax revenue if high earners leave the state. Even a small number of departures, analysts say, could result in multibillion-dollar losses.

The proposal has also sparked political debate within California, with state leaders divided over whether a state-level wealth tax would strengthen public finances or accelerate capital flight.