Sergey Brin, the Google co-founder who previously fought and helped block California’s proposed wealth-tax measures, may have won one battle against billionaire-focused taxation. However, the political landscape in Washington suggests that the wealthy Americans could soon face renewed scrutiny as Democrats regain control of Congress and revive efforts to make billionaires pay more tax. This renewed debate follows what many business leaders viewed as a significant victory over state-level wealth-tax proposals in California, where critics that high-net-worth individuals could be taxed even after leaving the state. Opponents said such measures contributed to fears of an exodus of wealthy residents and entrepreneurs. While those proposals never become law, tax experts say the focus has now shifted to federal-level initiatives aimed at the richest Americans, as reported by CNBC.
Sergey Brin’s campaign against Prop 40
Prop 40 proposed a one-time 5% tax on the assets of roughly 200 California billionaires. Its backers, led by the state’s powerful healthcare workers’ union, wanted the money mostly for healthcare, to offset cuts to Medi-Cal for low-income residents. Brin was the biggest single donor against it. He contributed $102 million to fight Prop 40. Billionaire opponents and business interests put $316.7 million into the campaign to stop it, and opponents also put two countermeasures on the ballot, Props 41 and 42, designed to cancel the tax. Prop 42 would have banned wealth taxes in the state altogether. Brin also stood as an example of the flight risk that opponents invoked. They argued that billionaires would follow the paths of Elon Musk to Austin and Brin to Miami Beach, changing their residency to avoid the tax. Brin was one of the four richest Californians, with Nvidia CEO Jensen Huang, Google co-founder Larry Page and Meta CEO Mark Zuckerberg.According to a Los Angeles Times estimate, they would have owed 40% of the tax revenue. Gov. Gavin Newsom also came out against the measure, and Prop 40 exposed divisions among Democrats. Opponents outspent its supporters heavily, and early returns showed the measure losing. With about half the projected votes counted, 55.6% of voters had rejected it. At the time of reporting, the race had not been formally called.
Democrats signal fresh push on billionaire taxation
Following sweeping Democratic victories in the midterm elections, Ron Wyden, who is expected to retake control of the Senate Finance Committee, indicated that taxing the wealthy will remain a priority. “On taxes, the committee will redouble its efforts to ensure billionaires pay their fair share and hold tax cheats accountable,” Wyden said, according to CNBC.Tax attorneys told CNBC that most of the proposals are unlikely to become law in the near term because President Donald Trump could veto them. However, they say the bills offer a clear indication of the policies Democrats may pursue if they regain the White House and unified control of Congress in the future.
Proposal 1: Ending the carried-interest tax break
One proposal gaining renewed attention is the Ending the Carried Interest Loophole Act, introduced by Ron Wyden and Angus King. Under current rules, private equity and hedge fund managers can have portions of their earnings taxed at lower capital gains rates if investments are held for a certain period. The proposed legislation would instead tax those profits as ordinary income and accelerate when taxes are paid.The so-called carried-interest loophole has been criticised by lawmakers from both parties for years. Even President Trump has previously argued the provision gives wealthy fund managers an unfair advantage over ordinary workers. Tax experts told CNBC that carried interest reforms could eventually become part of a broader tax package designed to raise revenue, particularly as lawmakers confront concerns about the long-term funding of Social Security.
Proposal 2: Annual taxes on massive trusts
A second proposal, the Fair Trusts for Fiscal Responsibility Act, targets ultra-wealthy families that use large trusts as estate-planning tools. The bill, introduced by Patty Murray, would impose annual taxes on trust assets exceeding $50 million, with rates rising to 3% for assets above $1 billion.As per a tax professional quoted by CNBC, this measure could help in fundamentally reshaping the estate planning for some of America’s wealthiest individuals. However, experts question the practicality of implementing such a system, they believe the proposal excludes the growing political interests in taxing wealth held within trusts rather than waiting until asses are transferred.
Proposal 3: Cracking down on the ‘buy, borrow, die’ strategy
Perhaps the most closely watched proposal is the Redistribution Of Billions by Instituting New High-income Obligations on Overlooked Debt (ROBINHOOD) Act of 2026. The bill seeks to address the so-called “buy, borrow, die” strategy often associated with billionaires such as Larry Ellison and Elon Musk. Under the strategy, wealthy individuals borrow against appreciating stock holdings instead of selling shares and triggering capital gains taxes.The Senate bill, introduced by Ruben Gallego, would require certain ultra-wealthy borrowers to pay taxes on gains linked to assets used as collateral for loans. A related House proposal would levy a 20% tax on selected asset-backed loans for higher-income borrowers. As per the CNCB report some wealth-planning experts feel that these proposals may have a greater chance of advancing than broader wealth-tax plans because they target specific tax strategies rather than attempting to tax unrealised gains directly.