This Comment evaluates four recent proposals to reform tax laws affecting the financial industry. After introducing the proposals, the author provides a theoretical framework for evaluating them and then relies on this framework to explore the benefits and drawbacks of each. Ultimately, the author rejects two proposals that call for imposing financial-transactions taxes and argues that lawmakers should instead focus on plans to either (1) permit cost-of-equity tax deductions or (2) tax the debt held by major financial institutions.