California Governor Gavin Newsom (D-CA) opposes a proposed five percent wealth tax on billionaires in his state [1].

The governor's stance creates a political tension as he champions a national wealth tax while fighting a similar measure at the state level. This divide highlights the difficulty of balancing economic competitiveness with progressive tax goals.

During a June 2026 interview on CNBC’s Squawk Box [3], Newsom discussed the proposal alongside former U.S. Senator Heidi Heitkamp (D-ND) and former White House chief of staff Mick Mulvaney. Newsom said that implementing such a tax within California would be detrimental to the state's economy. "If it's bad for the Golden State, it's worse for America," Newsom said [1].

Despite the governor's opposition, the measure is scheduled to appear on the California ballot in November 2026 [2]. The proposal would levy a five percent tax on the wealth of the state's billionaires [1]. This effort has led to friction between the governor and the measure's proponents. Reports indicate that Newsom tried to intimidate those supporting the tax into pulling the measure from the ballot [2].

Critics suggest the governor is attempting a difficult political maneuver. The OC Register said it would be amusing to watch Newsom's political balancing act as he tries to defeat the state wealth tax while saving face with the left-wing of his party [1].

Newsom said that a federal approach is the only viable way to address wealth inequality without triggering capital flight. He said that a national framework prevents individual states from competing against one another through tax cuts, a cycle that could undermine the goal of the tax itself.

"If it's bad for the Golden State, it's worse for America."

Newsom's opposition to a state-level tax while supporting a federal one reflects a strategic concern over 'tax competition.' If California implements a wealth tax unilaterally, high-net-worth individuals may migrate to lower-tax states, potentially eroding the state's tax base. By pushing for a national standard, Newsom seeks to eliminate this incentive for relocation while still achieving the progressive redistribution goals of his party.