California Proposes One-Time Tax on Billionaires

<figure> <img alt="Two people sitting in folding chairs wear white shirts reading “billionaire tax now” in blue and red text across the back." src="https://platform.vox.com/wp-content/uploads/sites/2/2026/09/gettyimages-2261847988.jpg?quality=90&amp;strip=all&amp;crop=0,0,100,100" /> <figcaption> Attendees wear "Billionaire Tax Now" shirts during a campaign kickoff event for the California Billionaire Tax Act on February 18, 2026, in Los Angeles, California. | Tim Rue/Bloomberg via Getty Images </figcaption> </figure> <p class="wp-block-paragraph">Democratic politicians are increasingly advocating for higher taxes on wealthy individuals. New York Mayor Zohran Mamdani has made it a key part of his agenda, while Texas Senate candidate James Talarico and Georgia Senator Jon Ossoff have also highlighted the issue in their campaigns.</p> <p class="wp-block-paragraph">In California, voters will decide in November whether to implement a one-time tax on approximately 250 billionaires residing in the state, set at 5 percent of their total assets. This proposal has generated significant opposition among some billionaires, with a few reportedly relocating.</p> <p class="wp-block-paragraph">Support for the tax comes from labor unions and some lawmakers, including Senator Bernie Sanders and Representative Ro Khanna, though it faces skepticism from moderate Democrats.</p> <p class="wp-block-paragraph">Cornell University sociology professor Cristobal Young expressed concerns about the effectiveness of a one-time tax in addressing ongoing wealth inequality. He stated, “It’s a one-time tax, but this is not a one-time problem.”</p> <p class="wp-block-paragraph">Young's research indicates that previous state-level taxes on millionaires have not significantly impacted migration patterns, suggesting that the wealthy do not necessarily leave states with higher taxes.</p> <p class="wp-block-paragraph">He noted that the proposed California tax would impose unprecedented tax bills on a small number of individuals, which differs from past tax policies that targeted smaller amounts. Young emphasized the need for ongoing solutions rather than temporary measures.</p> <p class="wp-block-paragraph">The conversation surrounding the billionaire tax proposal has highlighted existing loopholes in the tax system, particularly regarding unrealized capital gains, which can allow wealth to accumulate without being taxed until assets are sold. Young advocates for a different approach to taxing billionaire wealth, suggesting a focus on annual increments in wealth rather than a one-time tax.</p> <p class="wp-block-paragraph">The proposed California tax has sparked a broader discussion about tax reform and the need to address wealth inequality in a sustainable manner.</p>