This paper analyzes presidential candidate Jeb Bush’s tax proposal. It would reduce individual and business marginal tax rates, curtail tax expenditures, and convert the corporate income tax into a cash-flow consumption tax. The proposal would cut taxes at all income levels, reducing federal revenues by $6.8 trillion over its first decade before considering macro feedbacks. The plan would improve incentives to work, save, and invest, but unless accompanied by very large spending cuts, it could increase the national debt by as much as 50 percent of GDP by 2036, which would tend to put a drag on the economy.