California’s Bold Bid for a Wealth Tax: A Blueprint for the Nation
California is poised to become the first state in the nation to implement a wealth tax, as a powerful union and leading economists unveiled a 2026 ballot measure targeting the state’s wealthiest residents. The proposal, designed to address a looming crisis in Medicaid funding, offers a strategic approach to wealth taxation that aims to preempt common objections and garner public support.
The initiative is spearheaded by SEIU’s United Healthcare Workers West, representing healthcare professionals across California, and economists Emmanuel Saez of UC Berkeley – renowned for his work on wealth inequality with Thomas Piketty and Gabriel Zucman – and his former colleague Robert Reich, a prominent economic policy expert and former Secretary of Labor.
The proposed “emergency billionaires’ tax” seeks to recoup $100 billion lost to California’s Medicaid program, known as Medi-Cal, over the next five years. This shortfall stems from tax cuts enacted by the Republican-led Congress and former President Trump, which disproportionately benefited the wealthy and reduced federal funding for Medicaid. If approved by voters in November 2026, the measure would impose a 5% tax on the net worth of roughly 200 California billionaires. Ninety percent of the revenue generated would be directed towards Medi-Cal recipients and healthcare institutions, while the remaining 10% would bolster the state’s K-12 education system – a move likely intended to secure the backing of the state’s influential teachers unions.
Beyond addressing the immediate Medicaid crisis, the proposal carries broader implications amid growing national discussions about wealth inequality. Proposals to increase taxes on the wealthy are gaining traction, with similar initiatives emerging in France and New York City. In France, Gabriel Zucman has advocated for a wealth tax to address the national budget deficit, while in New York City, mayoral nominee Zohran Mamdani proposes raising income taxes on high earners to fund universal childcare. These proposals consistently face resistance from wealthy individuals and their advocates, who often argue that such taxes will drive capital and residents away.
However, the California plan is uniquely structured to circumvent these arguments. It is a one-time tax levied on billionaires’ net worth as of 2025. Crucially, even if a billionaire relocates – “even to Tasmania,” as Saez noted – they would still be liable for the 5% tax on their 2025 wealth. Payments can be spread out over five years, but remain based on the initial 2025 valuation.
During a press conference unveiling the measure, Saez highlighted that the average yearly income of billionaires is increasing at 7.5%, significantly outpacing the 1.5% growth experienced by median-income residents. This suggests that even after the 5% tax, their wealth will continue to grow. Furthermore, approximately 72% of billionaires’ wealth is held in publicly traded stock, making valuation relatively straightforward, utilizing existing models from Switzerland and Sweden for privately held assets. Billionaires would self-report their wealth in 2027, based on their 2025 net worth, with the state retaining the right to audit these returns.
The tax’s focus on current residents also distinguishes it from other proposals. It will not impact individuals who move to California after 2025, effectively neutralizing the “billionaire flight” argument that has plagued similar initiatives. While acknowledging the potential for criticism framing the measure as “socialistic,” proponents believe the direct allocation of funds to 15 million Medi-Cal recipients – whose access to healthcare is threatened by federal funding cuts – will resonate with voters. Organizers have until June to collect roughly 874,000 signatures to qualify for the November 2026 ballot.
The initiative’s presence on the ballot is expected to have significant ripple effects. Democratic candidates are likely to embrace the proposal, while conservative politicians, such as gubernatorial hopeful Rick Caruso, may be compelled to offer their support. The success of the California measure could inspire similar proposals in other states and cities.
While the California initiative is limited in scope – applying to only 200 taxpayers and a single year’s assessment – it doesn’t aim to comprehensively address economic inequality. As Saez pointed out, it falls short of restoring the 91% top income tax rate seen during the Eisenhower administration, a period marked by significant gains in wealth and income for average Americans. Nevertheless, it represents a crucial step towards reining in the concentration of wealth and preserving democratic principles.
