Tax sources of income tax in the United States came from the following sources: the United States constitution, the supreme law of the US; the Internal Revenue Code, the main body of domestic statutory tax law of the US; Treasury Regulations; and the US Federal Courts. A treaty is an agreement entered by actors of international law.
Forty percent of Americans do not pay
federal income tax. Of the 42.5 million, 52.9% that pay no taxes received refundable credit in some form.
Majority of those non-payers earned low income. Their earnings are less $30,000 or $40,000 per year. They worked only part-time or worked full-time but for only part of the year.
The people that do not earn enough are college students, retirees and single parents. They can earn amount but are not required to file tax returns because their earnings do not reach the minimum taxable amount.
Almost 58 million households belong outside the income tax system. This raised questions about the tax system future. Those questions must be started to debate by lawmakers.
There are arguments against the US income tax. To libertarian, taxation of income is a violation of natural rights. Consumption tax proponents argued that income tax system creates perverse incentives by encouraging taxpayers to spend rather than save. Others argue that it’s too “progressive” and “redistributive”. Some of the tax protesters argued that income tax is enforce upon threat of imprisonment.