[20211215]IN11828_能源相关资本投资的有效边际税率：投资税收抵免和加速折旧的影响 .pdf

CRS INSIGHT Prepared for Members and Committees of Congress INSIGHTINSIGHTi i Effective Marginal Tax Rates on Energy-Related Capital Investments: Effects of the Investment Tax Credit and Accelerated Depreciation December 15, 2021 Energy-related investments are supported by various tax credits as well as accelerated cost recovery for tax purposes. This Insight uses an effective marginal tax rate approach to evaluate the relative magnitude of investment tax credits and bonus or accelerated depreciation on renewable energy investments. Effective marginal tax rates under current law are compared to various policy alternatives, as well as policies proposed in the Build Back Better Act (BBBA; H.R. 5376). What are effective marginal tax rates? An effective marginal tax rate measures the tax burdens on an investments return. As a single measure, it combines the statutory tax rate with other features of the tax code (e.g., tax credits and the timing of depreciation deductions). The effective marginal tax rate (EMTR) is a forward-looking measure that summarizes tax-based incentives to invest in certain types of assets. A lower effective tax rate means there is a greater incentive for capital