California's Billionaire Tax Showdown & The Luxury Real Estate Market

United States Real Estate October 13, 2026

Background

California's fight over taxing the very rich has reached its last three weeks. On October 9, CalMatters reported that Governor Gavin Newsom has endorsed Proposition 42, a measure funded by Google co-founder Sergey Brin that would cancel the proposed one-time billionaire tax (Proposition 40) and ban new state taxes on personal wealth such as stocks, business interests and art. "We all agree that Californians deserve to have their retirement and life savings protected from new state taxes," Newsom said.

Supporters of the tax pushed back at once. "By voting yes on Prop 42, he's showing California his true colors," said Debru Carthan, a vice president of SEIU-United Healthcare Workers West, the union behind Proposition 40.

The vote matters well beyond Sacramento. Over the past year, some of California's wealthiest people have bought homes in states with no income tax, setting price records at Lake Tahoe and in Miami. With mortgage rates at their highest level in almost three years (Freddie Mac's 30-year average reached 7.40% on October 8), the result on November 3 could shape where wealthy buyers live and invest, and how confidently they do it, in 2027.

A Tax Aimed at About 200 People

Proposition 40 was written by a group of tax scholars, including economist Emmanuel Saez, and is sponsored by SEIU-UHW. Ninety percent of the money would go to health care, mainly Medi-Cal, and the rest to education and food assistance. The union estimates about $100 billion; the nonpartisan Legislative Analyst's Office says "tens of billions" over several years, along with a possible yearly loss of income tax revenue if wealthy residents leave.

The tax would apply to only about 200 billionaires. Because it counts residency as of January 1, 2026, leaving the state now does not avoid it. But Proposition 42 reaches much further. It would block any new state tax on owning wealth, which is why many centimillionaires and business owners who will never pay a billionaire tax are following the race closely.

The money is lopsided. According to campaign filings compiled by California Today, the main committee for Proposition 42 has reported $97.8 million, almost all from Brin's group Building a Better California, compared with about $32.3 million for the Yes on 40 campaign. The polls are close and complicated. In the Public Policy Institute of California's September survey, likely voters supported both the tax and the measures designed to block it. "Supporters of Proposition 40, the so-called billionaire tax initiative, have a lot of work to do," said PPIC survey director Mark Baldassare. California Today notes that if Proposition 41 or 42 gets more yes votes than Proposition 40, the tax could be blocked even if it passes.

The real estate effect is already visible. Brin bought the 5.1-acre Crystal Pointe estate on Lake Tahoe's Nevada shore for $42 million in January. In March, venture investor Steve Jurvetson paid $125 million for an Incline Village compound, a Tahoe record, according to The Real Deal. Fortune, citing Bloomberg, reported that Larry Page paid $101.5 million for the Banyan Ridge estate in Miami's Coconut Grove, and that Brin bought a $51 million waterfront home in Miami Beach.

Where Buyers Will Look

Travel times are approximate.

Incline Village and Crystal Bay, Nevada (about 45 minutes from Reno-Tahoe International Airport). This is the clearest example of tax-driven buying. Sotheby's International Realty reported about $232 million in single-family sales in Incline Village in the first quarter of 2026, compared with $30.6 million a year earlier. The area offers granite shoreline, private piers, alpine-modern lodges and ski access at Diamond Peak. Christine Perry of Christie's International Real Estate told The Real Deal the Nevada side runs about 40% above the California side, though prices for homes under $20 million have softened.

Coconut Grove and Miami Beach, Florida (about 15–25 minutes from Miami International). Coconut Grove has banyan-shaded estates on Biscayne Bay, sailing clubs and the Vizcaya Museum and Gardens. Miami Beach adds deep-water lots on the Venetian Islands and along Pine Tree Drive, with walking access to Lincoln Road dining.

Palm Beach, Florida (about 10 minutes from Palm Beach International). The island's Mediterranean Revival and Regency estates, Worth Avenue shopping and oceanfront lots remain the classic East Coast choice. Supply is extremely limited, and many deals happen privately.

Westlake and Lake Austin, Texas (about 15–20 minutes to downtown Austin). Hill Country contemporaries, limestone-and-glass homes and lakefront lots with boat docks appeal to tech founders. Texas also has no state income tax.

Jackson Hole, Wyoming (about 15–20 minutes from Jackson Hole Airport). Timber-frame ranches facing the Tetons, ski access in Teton Village and a walkable western town square. Wyoming has no state income tax, and land that can be developed is scarce.

If You're Buying

Separate the headline from your own tax situation. Proposition 40 applies to billionaires and excludes real estate. Most luxury buyers should base their decision on lifestyle, income taxes and long-term wealth planning, with help from a tax advisor.
In California, waiting for the vote could help. The months before an election can be quiet at the very top of the market. Buyers ready before November 3 may find motivated sellers and more room on terms.
In destination markets, know that the bar has moved. Record sales at Tahoe and in Miami have reset sellers' expectations. Comparable sales matter more than headline prices.

If You're Selling

California sellers: market to buyers who are staying. Many affluent Californians are staying put. Strong presentation, flexible closing dates and realistic pricing work better than waiting to see how the vote turns out.
Destination-market sellers: present your home for buyers from out of state. Include airport access, private aviation, home office space, security systems and turnkey furnishings in the listing.
Price to today's financing. With rates above 7%, even cash-heavy markets feel it as fewer financed buyers compete.

If You're Relocating

Residency takes more than a new address. California's tax authority looks at where you spend time, vote, keep your family's main home and run your business. Plan any change in domicile carefully with a qualified tax attorney.
Rent before you commit. A season in Incline Village, Palm Beach or Austin can show whether the lifestyle fits, especially winters at Tahoe and summers in Florida.
Budget for insurance and carrying costs. Florida insurance premiums, Texas property taxes and mountain maintenance can offset some of the income tax savings.

If You're Investing

Hospitality-driven demand. Lake Tahoe's major resort projects, including the Cal Neva redevelopment and Larry Ellison's renovation of the former Hyatt Regency, are scheduled for 2027. They may support demand for luxury seasonal and furnished rentals nearby.
Mid-term furnished housing. Executives testing a move often rent for 30 to 180 days. Well-appointed homes near Miami, Palm Beach and Austin employment centers may draw this demand.
Check the rules. Short-term rental rules are strict and change often in Washoe County, Miami Beach and Palm Beach. Confirm current rules and HOA limits before buying.
Be patient and don't over-assume. Migration driven by policy has historically come in waves, and an election result could slow or speed it up. Base your numbers on today's rents and 7%-plus financing, and consult qualified tax and financial advisors.

The Bottom Line

The direct cost of California's billionaire tax falls on a very small group, and it does not tax real estate. The wider question on the ballot is whether California will allow new taxes on wealth, and that affects the confidence of a much larger group of affluent buyers. If Proposition 42 passes, some of the pressure to leave could ease. If Proposition 40 wins, Lake Tahoe's Nevada shore, South Florida, Austin and Jackson Hole could see more interest. Either way, executives and investors are likely to make decisions based on their own tax planning and lifestyle, not just election night.

Frequently Asked Questions

What is California's Proposition 40? A one-time 5% tax on the net worth of California residents worth $1 billion or more as of January 1, 2026. Real estate and most retirement accounts are excluded. Ninety percent of the money would go to health care.

What did Governor Newsom say about the billionaire tax? On October 9, 2026, CalMatters reported that Newsom opposes Proposition 40 and endorses Proposition 42, which would cancel it and ban new state taxes on personal wealth and retroactive taxes.

Does the billionaire tax apply to my home? No. Proposition 40 excludes real estate, and it applies only to people worth $1 billion or more.

Can a billionaire avoid Proposition 40 by moving now? Generally no. The tax is based on residency as of January 1, 2026. Anyone in that situation should consult a qualified tax attorney.

Where have wealthy Californians been buying? Recent record-setting purchases have come in Incline Village and Crystal Bay on Lake Tahoe's Nevada shore and in Miami's Coconut Grove and Miami Beach. Palm Beach, Austin and Jackson Hole are also popular with buyers looking for no state income tax.

What are mortgage rates right now? Freddie Mac reported a 30-year fixed average of 7.40% on October 8, 2026, up from 7.28% a week earlier.

Thinking about buying, selling or relocating to California, Lake Tahoe, South Florida, Austin or Jackson Hole? Global Search Executive Real Estate Advisory, Powered by Sotheby's Realty, connects you with trusted local agents in each of these markets and around the world. Visit globalsearchrealestate.com to start your search.

This article is for general information only and is not investment, legal or tax advice.