California Voters to Decide on Billionaire Wealth Tax Measure

California voters will head to the polls this November to decide on the Billionaire Tax Act, a ballot initiative that would impose a one-time, 5% levy on the net worth of the state’s wealthiest residents [1]. Proponents, led by the Service Employees International Union Healthcare Workers West, argue the measure is necessary to address a significant state budget deficit and offset federal healthcare funding cuts [2, 3].

Key takeaways

• The proposed tax is a one-time, 5% levy on the net worth of individuals with more than $1 billion in assets who were state residents as of January 1, 2026 [2, 3].
• Supporters claim the measure could generate $100 billion to support healthcare services, while critics suggest the revenue projections are overstated due to potential taxpayer migration [1, 2].
• A competing ballot measure, the Retirement and Personal Savings Protection Act, seeks to constitutionally prohibit new taxes on retirement accounts and personal savings [1].
• Opponents, including Governor Gavin Newsom, warn that the tax could drive wealthy residents out of the state and negatively impact the broader tax base [2].

Competing Visions for State Revenue

The Billionaire Tax Act aims to target approximately 250 households, representing about 0.001% of California families, to fill a budget gap created by federal funding reductions for programs like Medicaid [3]. While proponents suggest the tax could raise $100 billion, critics point to recent migration patterns as evidence that the revenue will fall short [1, 2]. Research from the Hoover Institution suggests that the departure of high-net-worth individuals—such as Google cofounders Larry Page and Sergey Brin—could reduce expected revenue to $40 billion, potentially resulting in a net loss for the state when accounting for the decline in traditional income tax collections [1].

In response to the wealth tax proposal, a second initiative known as the Retirement and Personal Savings Protection Act has emerged [1]. This measure aims to establish constitutional protections for retirement accounts, personal savings, and individually owned assets, effectively banning retroactive taxation [1]. Supporters of this measure argue that the state’s current fiscal challenges, characterized by a cumulative deficit exceeding $50 billion over the next two years, should not be addressed by expanding the state’s power to tax personal assets [1].

Why it matters

The upcoming election represents a significant test of voter sentiment regarding wealth taxation and the state's fiscal policy [2]. The outcome could set a precedent for future tax legislation, as the Billionaire Tax Act includes provisions that would allow the state to lift existing caps on the taxation of intangible personal property [1]. With both measures on the ballot, California voters are effectively choosing between two distinct paths: one that seeks to leverage the wealth of the state's richest residents to fund public services, and another that seeks to constitutionally limit the state's ability to reach into private savings and retirement accounts [1, 3]. The results of this vote will likely draw national attention as a barometer for how states manage budget shortfalls and tax policy in the current economic climate [2].