Scott and Jeff discuss Biden's proposed Mega Millionaire Minimum Tax with David Gamage, one of the thought-leaders behind the proposal and its variations. We discuss the basics of what the minimum tax might look like. We discuss the strengths and weaknesses of this type of tax. The tax is intended to force very wealthy individuals like Jeff Bezos or Mark Zuckerberg to pay more tax, even if they do not have much income as currently the tax code currently defines income. We also discuss the idea of "notional equity" as a way for the government to strengthen its taxing authority.