Rippling's Parker Conrad says California's billionaire tax would force him out, turning Prop 40 into a fight over founder liquidity
Rippling co-founder and CEO Parker Conrad has become the loudest founder voice against California's Proposition 40, the one-time billionaire wealth tax on the 3 November ballot. Replying to Congressman Ro Khanna on 22 October, Conrad wrote: "I absolutely cannot afford to stay, given that you and your corrupt union overlords are planning another 'one-time' tax in two years. This is not a 5% tax, it's a full confiscation of all my liquid assets. It's going to bankrupt founders without full liquidity." The post passed 200,000 views within hours, and Kim-Mai Cutler quoted it as a "disaster for pre-IPO founders in California".
Khanna had argued the same day that "billionaires will stay and figure out a way to pay the tax" and accused opponents of fear-mongering about an exodus.
- Prop 40 would levy a one-time 5% tax on the total net worth of Californians worth $1 billion or more, with a phase-in between $1.0 billion and $1.1 billion. Residency is fixed at 1 January 2026 and wealth is measured on 31 December 2026, so leaving now does not avoid it (Hoover Institution).
- The tax would be due in 2027, payable at once or in five annual instalments with a 7.5% annual charge. The measure includes a deferral option for illiquid assets such as private company stock. About 90% of the revenue would go to health care.
- Seven billionaires, including Peter Thiel, Larry Page and Sergey Brin, have publicly left California, taking about $540 billion, roughly 30% of the base, out of reach, according to Stanford economists Benjamin Jaros and Joshua Rauh in an NBER working paper. They estimate the tax may raise about $30 billion rather than the $100 billion backers claim (CBS News).
- Tech billionaires have funded the No campaign heavily, including Patrick Collison ($22 million) and John Doerr (reported $30 million), according to a report by the Yes campaign's allies.
Conrad's claim that the tax "confiscates 100%" of a founder's liquid assets is his reading of the deferral rules, based on what he says his legal advice is: to defer tax on illiquid stock he would first have to hand over his liquid wealth, minus a living allowance. He also says private stakes would be taxed at the highest valuation of the past two years. Supporters say the deferral account exists precisely so founders don't have to sell stock to pay. Whether he will actually move has not been confirmed beyond his post.
The debate has shifted from whether billionaires can afford 5% to whether founders whose wealth is locked in private company stock can pay it at all. That matters for every pre-IPO company with a California-based billionaire founder, and for where the next generation of founders chooses to build.
Parker Conrad on X, Ro Khanna on X, Kim-Mai Cutler on X, Hoover Institution, CBS News (20 Oct 2026), AP (9 Oct 2026)
