California’s Counting on an IPO Tax Windfall. Several Factors Are Complicating the Equation.

You're expecting a massive bonus at work. You've already mentally spent it, the home renovation, the vacation, the new car. Your budget depends on it.

Then you find out the bonus is going to be spread out over three years. And your most sophisticated colleagues have found ways to reduce their tax bill substantially. And the market might crash before you see a dime.

That's California right now.

The Golden State is counting on an IPO tax windfall from three tech giants,  SpaceX, OpenAI, and Anthropic - to help balance its books. Combined, these companies could be valued at over $4 trillion. The 2012 IPO of Facebook, then valued at just $104 billion, generated $1.3 billion in taxes for California.

Simple math suggests this new wave could bring in tens of billions.

But here's the thing: the math isn't simple anymore.

The way tech employees are compensated has changed. The tools available to minimize tax bills have multiplied. And California's budget has become dangerously dependent on the kind of volatile, boom-and-bust revenue that IPOs represent.

Let's break down what's really going on, and why California might not get the payday it's expecting.

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The $1.3 Billion Precedent, Facebook's 2012 IPO

To understand why everyone's so excited, you have to go back to 2012.

Facebook went public at a valuation of $104 billion. It was a landmark moment for Silicon Valley and for California's treasury. The state collected $1.3 billion in taxes from the IPO, according to the California Department of Finance.

That's a lot of money. And it came at a time when the state desperately needed it.

Now fast forward to 2026.

SpaceX alone is valued at $2.5 trillion. That's roughly 24 times Facebook's 2012 valuation. OpenAI and Anthropic are expected to go public at valuations approaching $1 trillion each.

If you're doing the math in your head, and believe me, California's budget planners are, you're thinking: 24 times $1.3 billion is over $30 billion. Just from SpaceX.

But that's not how it works anymore.

The tax structure has shifted from what one analyst called "concentrated, one-time spikes" toward "longer-term, distributed realization". And that shift is the key to understanding everything that follows.

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The Three Mega-IPOs That Could Reshape California's Budget

Let's get familiar with the players.

SpaceX, $2.5 Trillion and Counting

SpaceX went public on June 12, 2026, at a valuation around $1.8 trillion. It's now trading at $2.5 trillion. The company employs more than 22,000 people worldwide, with approximately 7,661 working at its former headquarters in Hawthorne, California.

Many of these employees have been with the company for over 20 years. They hold significant stock options and restricted stock units. When those vest or are sold, California taxes the income at rates up to 13.3%.

One financial advisor put it bluntly: "When this thing goes public, the California economy is just going to boom".

But as we'll see, "boom" might be an overstatement.

OpenAI and Anthropic, The AI Contenders

OpenAI and Anthropic are both based in San Francisco. Both are expected to go public later this year at valuations approaching $1 trillion.

OpenAI has already filed for its IPO and has grown to become the second-largest office tenant in San Francisco. Anthropic is targeting an October IPO.

Together, these three companies represent the largest IPO wave in California's history. "This is going to be galactically huge," one Bay Area official said.

But "galactically huge" doesn't necessarily mean "galactically immediate", or "galactically certain."

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Factor #1, The Single-Trigger RSU Problem

Here's where things get technical. But stick with me, this is the most important factor.

How RSUs Work (Explained Simply)

Restricted Stock Units (RSUs) are a common form of employee compensation. A company promises to give you shares of stock once certain conditions are met.

Most startups use dual-trigger RSUs. The two triggers are:

1. Continued employment
2. A liquidity event, like an IPO

When both conditions are met, the shares vest. And when they vest, it's a taxable event. The employee owes income tax on the value of the shares.

This is what happened with Facebook in 2012. Thousands of employees had their RSUs vest on IPO day. They owed taxes. California collected billions.

Why SpaceX Is Different

SpaceX uses single-trigger RSUs.

The shares vest based on employment alone - no liquidity event required. That means SpaceX employees have been paying income taxes on their shares for years, as the stock vested over time.

The California Legislative Analyst's Office (LAO) said this structure makes it "challenging" to estimate SpaceX's tax impact.

"Revenue totals will depend more on financial decisions made by employees and investors who hold pre-IPO SpaceX shares and stock options," the LAO wrote.

Translation: The tax revenue has already been trickling in, rather than waiting to flood in on IPO day.

It's like the difference between getting a lump-sum bonus and getting a raise spread across your paychecks. The total might be similar, but the timing, and the impact on the state's budget, is completely different.

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Factor #2, Tender Offers Drained the Pool Early

Remember when I said the tax revenue has already been trickling in?

Tender offers are a big reason why.

A tender offer is when a company allows employees to sell some of their shares to outside investors before the IPO. It's a way for employees to get liquidity without waiting for the public offering.

OpenAI ran a $6.6 billion secondary share sale at a $500 billion valuation - and plans another at $852 billion.

Employees at all three companies have had "ample opportunity" to sell pre-IPO shares.

Here's the catch: those gains were already taxed. The revenue arrived before the IPO, not on the day regulators planned for.

So when you read headlines about a "windfall" hitting California's budget, remember: a significant portion of that windfall has already happened. It's just been spread out over years, making it less visible, and less useful for plugging immediate budget holes.

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Factor #3, The "Buy, Borrow, Die" Strategy

This is the biggest structural leak in the tax system. And it's not just for billionaires anymore.

What It Is

The "buy, borrow, die" strategy works like this:

1. Buy appreciating assets (like stock)
2. Borrow against those assets instead of selling them
3. Die - and let your heirs inherit the assets with a stepped-up cost basis, eliminating years of capital gains tax

Here's why it matters for California: loan proceeds are not taxable income. If a SpaceX employee borrows $10 million against their stock instead of selling it, they pay zero capital gains tax on that $10 million.

They pay interest instead of taxes. They stay invested. And they benefit from future appreciation.

Elon Musk himself has used this strategy extensively, borrowing against billions in Tesla shares rather than selling them.

Now Available to Ordinary Employees

Here's the game-changer: a cottage industry of wealth managers now makes these tools available to ordinary employees, not just founders.

"Historically, the only people who had equity in a private company and were in a position to give it away were millionaire or billionaire founders," said Richard Lowry of wealth manager Cresset.

"Now there is a cottage industry around allowing people to avail themselves of this".

Think about that. The tax strategies that used to be reserved for the ultra-wealthy are now available to any employee with significant pre-IPO stock.

And California is losing billions because of it.

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Factor #4, Donor-Advised Funds and Other Tax Shelters

The "buy, borrow, die" strategy isn't the only tool in the tax-minimization toolkit.

Donor-advised funds have become increasingly popular. Employees at some startups can get a tax deduction by donating private, pre-IPO stock to a donor-advised fund.

"A decade ago, such donations were generally limited to the ultra-wealthy, since few charitable organizations were equipped to accept or manage those assets," Lowry said.

Now? "There is a cottage industry".

Employees can donate shares, claim a tax deduction for the full fair market value, and avoid capital gains tax entirely. The charity sells the shares tax-free.

California's Franchise Tax Board is "notoriously aggressive" in auditing these transactions, according to tax analyst Robert Willens. But aggressive auditing can only do so much when the tax code itself provides the loopholes.

The reality is that the most sophisticated shareholders will reduce their bills substantially.

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Factor #5, California's Budget Relies Heavily on Volatile Revenue

This is the big-picture problem that keeps budget analysts up at night.

The $350 Billion Budget

Governor Gavin Newsom's revised 2026-27 budget proposes $350 billion in spending. That's a 73% increase from the $201 billion budget he inherited in 2019.

Newsom says the budget is balanced, no deficit for the next two years. He's counting on "higher-than-expected income tax revenue driven by the artificial intelligence boom and a strong stock market".

But the Legislative Analyst's Office isn't so sure.

The LAO's Warning

"We think there's a structural imbalance with the budget, both in the upcoming budget year and in the subsequent years ahead," Legislative Analyst Gabriel Petek said.

"If we go back to the dot-com bubble, which this looks eerily similar to, the revenue shortfall would be more in the range of $100 billion," Petek warned.

That's not a small difference. That's a catastrophic difference.

The LAO recommends the state use the current period to build reserves. But the governor's proposal instead relies on that money for ongoing spending.

This is the real risk. Even if California collects billions from these IPOs, the money might be gone before the next downturn hits. And when the downturn comes, as it always does, the state will be left with a structural deficit and no cushion.

"California's finances remain heavily dependent on highly cyclical capital gains and equity markets," one analyst noted.

Translation: California is betting its future on the stock market. And we all know how that can go.

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The Ironic Twist, SpaceX Left, But Its Tax Bill Didn't

Here's a delicious irony: Elon Musk loudly quit California after years of attacking its taxes, politics, and business climate. He moved SpaceX's headquarters to Texas.

But the company's IPO payday? It stayed in California.

Why? Because Texas has no personal income tax - and California taxes income at rates up to 13.3%.

The thousands of SpaceX employees who still live and work in the Los Angeles area will face California's "millionaires' tax" on their stock gains. Texas won't get that bump.

"It seems quite plausible to me that California collects far more than Texas, for the simple reason that Texas has no income tax, and many of these employees still live and work in L.A.," one analyst said.

So Musk moved the headquarters. But the people - and their tax bills, stayed behind.

That's the good news for California. The bad news? All the complicating factors we've just discussed mean the windfall might be smaller, slower, and less predictable than anyone hoped.

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What This Means for California's Fiscal Future

Let's step back and look at the big picture.

California is facing a fundamental shift in how IPO tax revenue arrives.

The old model (Facebook 2012):

• Concentrated, one-time spike
• Predictable timing
• Easy for budget planners to count on

The new model (SpaceX/OpenAI/Anthropic 2026):

• Spread over years
• Less predictable
• Easily blunted by sophisticated tax strategies

"The windfall will be spread over years rather than arriving in a single quarter, and the most sophisticated shareholders will reduce their bills substantially," TNW reported.

California's tax structure is shifting from "concentrated, one-time surges" toward "longer-term, distributed realization," making fiscal gains more volatile and less predictable.

For a state with a $350 billion budget and a structural imbalance, that's a problem.

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California is counting on an IPO tax windfall to help balance its books 

And on paper, the numbers look incredible,  $2.5 trillion for SpaceX, $1 trillion each for OpenAI and Anthropic.

But here's the thing about counting on windfalls: they're called windfalls because you can't control them.

Four factors are complicating the equation:

1. Single-trigger RSUs - the tax revenue has already trickled in over years, rather than flooding in on IPO day
2. Tender offers - employees have already sold billions in pre-IPO shares, generating tax revenue early and unpredictably
3. The "buy, borrow, die" strategy - sophisticated employees are borrowing against their stock rather than selling it, avoiding capital gains tax entirely
4. Budget volatility - California's finances are dangerously dependent on cyclical stock market gains that could disappear in a downturn

Add it all up, and the windfall might be real but unpredictable, large but less concentrated, and far more diffuse than the Facebook precedent suggests.

For California's budget planners, that's a nightmare scenario. You can't build a $350 billion budget on "maybe."

The bottom line: California will almost certainly collect billions from these IPOs. But it won't be the quick, concentrated windfall the state is hoping for. And if the market turns, as it always does, the structural imbalance in the budget will be exposed for all to see.

Sometimes the biggest risk isn't that the windfall doesn't come. It's that you count on it too much.