California Proposition 42 Would Block Taxes on Unrealized Investment Gains
Proposition 42 on California's 2026 ballot aims to prevent the state from imposing taxes on wealth held in investments, retirement accounts, and personal assets that have not been sold or converted to income. Supporters, primarily wealthy individuals and some law enforcement and construction unions, argue the measure protects retirement savings from future taxation, while opponents like SEIU healthcare workers' union contend it is designed to undermine a competing proposal taxing billionaire wealth. The proposition would nullify a conflicting measure if it receives more votes.
California's Proposition 42 directly addresses how states may tax investment wealth in the future. The measure would constitutionally prevent lawmakers from creating taxes based on asset ownership alone—such as retirement portfolios or personal property—unless those assets are sold or generate income. This represents a preemptive legal barrier against wealth taxation strategies that some states have explored or proposed.
The ballot presents a collision between two competing wealth-tax proposals. Proposition 40 seeks to impose taxes specifically on billionaire wealth, while Proposition 42 aims to block any such taxation framework. Due to California's election rules, whichever measure receives more votes would supersede the other, forcing voters to choose between fundamentally different approaches to taxing accumulated wealth.
Proposition 42's passage could significantly shape California's revenue options and wealth inequality policy for decades. Supporters suggest it protects middle-class retirement savings from future taxation, potentially affecting millions of account holders. Opponents argue it primarily shields the wealthiest individuals from contribution to state coffers. The measure's outcome may influence whether states can implement wealth taxes—a policy approach gaining attention nationally—and could set a precedent affecting how other jurisdictions approach taxing unrealized gains.