Income tax in the United States income and tax it, so long as it acts within its constitutional authority, which includes not only the Sixteenth Amendment but also Article I, Sections 8 and 9." Similarly, in "Penn Mutual Indemnity Co. v. Commissioner", the United States Court of Appeals for the Third Circuit indicated that Congress could properly impose the federal income tax on a receipt of money, regardless of what that receipt of money is called: It could well be argued that the tax involved here [an income tax] is an "excise tax" based upon the receipt of money by the taxpayer. It certainly is not
Income tax in the United States on saved income is itself taxed. To the extent that this is considered unjust, it may be remedied in a variety of ways, e.g. excluding investment income from taxable income, making investments deductible and therefore only taxing them when gains are realized, or replacing the income tax by other forms of tax, such as a sales tax. Some economists believe income taxation offers the federal government a technique to diminish the power of the states, because the federal government is then able to distribute funding to states with conditions attached, often giving the states no choice but to submit to