LinkedIn co-founder Reid Hoffman doesn't mince words when it comes to California's proposed billionaire wealth tax. He thinks it's a disaster waiting to happen, even though he shares the same basic goal as its supporters: figuring out how to address inequality without breaking Silicon Valley's innovation machine.

When Good Intentions Meet Bad Design

After Rep. Ro Khanna reached out to discuss the proposal, Hoffman took to X to air his grievances. While appreciating the dialogue with his elected representative, he made his position crystal clear.

"While I am against the proposed tax, I'm always open to dialogue with our elected leaders," Hoffman wrote, before dropping the hammer: the proposal is "badly designed in so many ways that a simple social post cannot cover all of the massive flaws."

His biggest concern? The tax would hit illiquid assets like private company stock, potentially forcing founders to sell shares just to pay their tax bills. That's the kind of thing that could destabilize businesses and send shockwaves through the startup ecosystem.

"Poorly designed taxes incentivize avoidance, capital flight and distortions that ultimately raise less revenue," he warned.

Khanna Isn't Backing Down

Meanwhile, Khanna, who represents a Silicon Valley district packed with tech giants, remains firmly in the pro-tax camp despite threats from wealthy residents to pack up and leave.

The proposal would slap residents worth over $1 billion with an annual tax of up to 5% on their assets. Those with $20 billion or more as of January 1, 2026, would face a one-time $1 billion payment. A separate version calls for a 1% billionaire tax specifically to fund healthcare as federal Medicaid cuts loom.

Khanna's counterargument is straightforward: the tax won't kill innovation. After all, companies worth more than $1 trillion operate within a 50-mile radius of his district right now.

The Great California Exodus Debate

When investor Peter Thiel threatened to leave California over the tax, Khanna pushed back, arguing that founders don't skip building companies because of hypothetical future taxes.

Supporters point to research showing the effective tax rate for America's wealthiest 0.0002% actually dropped after the 2017 GOP tax overhaul, making the case that something needs to change.

Critics like billionaire investor Bill Ackman warn the tax could trigger an exodus of jobs and capital from the state. Google co-founder Larry Page is reportedly already heading for the exit, while Nvidia CEO Jensen Huang has publicly reaffirmed his commitment to staying in California.

The underlying question is whether California can thread the needle between addressing wealth inequality and maintaining the ecosystem that created all that wealth in the first place. Hoffman clearly thinks this particular proposal misses the mark.