Taxation-State and Local Commons^™

Expert Report On Valuation Of Controlling Shares Of Publicly Traded Companies Under The California Billionaire Tax Act (Cbta), David Gamage, Brian D. Galle, Emmanuel Saez, Darien Shanske

Faculty Publications

This short memo addresses concerns that have been raised under the proposed California Billionaire Tax Act (CBTA or Act) about the valuation of "voting" or "special control" shares, particularly with regard to shares held in publicly traded companies. A misreading of the CBTA is circulating that claims that voting shares of all assets will be taxed in full regardless of their actual value. This is false, as shown by a straightforward reading about the provision relating to voting and special control shares in context.

Impact Of Vague State Tax Collection Alternatives On Low-Income Taxpayers, Sakinah Tillman

Journal Articles

Benjamin Franklin stated, “In this world, nothing is certain except death and taxes.” While death is inevitable, navigating the complexities of state tax laws and procedures for paying state tax debt is far from straightforward. State tax laws are unnecessarily complex, disproportionately burdening low-income taxpayers, especially Black and Brown individuals. These taxpayers face systemic inequities and ambiguous collection alternatives that trap them in perpetual cycles of debt and noncompliance. ...

applies to state tax collection procedures and analyzes how state tax systems disproportionately impact low-income taxpayers, particularly Black and Brown individuals.36 Part II of this Article addresses how vague statutes, …

Correcting The Record: Responding To Some Legal Arguments About The 2026 Billionaire Tax Act, David Gamage, Brian D. Galle, Darien Shanske

Faculty Publications

If adopted by California voters in November of 2026, the 2026 California Billionaire Tax Act (CBTA) would impose a one-time 5% tax on the net worth of California billionaires, payable in five annual installments of 1% over 5 years (plus a small deferral charge). Critics have raised several arguments suggesting that the Act would not bring in the expected $100 billion in projected revenues because, the critics say, key parts of the Act are unconstitutional and would be subject to legal challenge. In fact, the supposed new legal challenges critics identify are mostly just very old arguments that courts have …

Expert Report On The California 2026 Billionaire Tax: Revenue, Economic, And Constitutional Analysis, David Gamage, Brian D. Galle, Emmanuel Saez, Darien Shanske

Faculty Publications

This report summarizes key provisions of the California Billionaire Tax Act. It also answers some frequently asked questions.

Expanding State Tax Authority: Public And Private Sector Impacts Of Wayfair, Maxwell Pastoria

Williams Honors College, Honors Research Projects

The 2018 Supreme Court decision in South Dakota v. Wayfair, Inc. (Wayfair) overturned the longstanding physical presence rule for state sales tax collection, enabling states to enforce tax obligations on remote sellers through marketplace facilitator and economic nexus laws (Oyez, 2018). This study investigates the effects of these two post-Wayfair tax laws on state sales tax revenues, entrepreneurship, and public expenditures across all 50 states. Using a two-way fixed effects difference-in-differences (TWFE DID) framework, this research analyzes how policy adoption influenced per-capita outcomes in tax revenue, firm formation, and government spending in social services, education, infrastructure, and …