U.S. Code > Title 26 Internal Revenue Code > Subtitle A—Income Taxes (§§ 1—1564) > CHAPTER 1—NORMAL TAXES AND SURTAXES (§§ 1—1400U3) > Subchapter A—Determination of Tax Liability (§§ 1—59B) > PART IV—CREDITS AGAINST TAX (§§ 21—54AA) > Subpart E—Rules for Computing Investment Credit (§§ 46—50A,_50B) > § 46. Amount of credit