Revenues generally include most types of income that enrich the taxpayer, including compensation for services, profits from the sale of property or other real estate, interest, dividends, rents, royalties, pensions, pensions and all kinds of other assets.  Many plans exclude all or part of payments for superannuation or other national pension plans. Most tax plans exclude health care benefits provided by employers or under national insurance plans. The proportion of people who pay their income tax in full, on an ad hoc and voluntary basis (i.e. without being sanctioned by the government or ordered to pay more) is called voluntary compliance rates.  The voluntary compliance rate is higher in the United States than in countries such as Germany or Italy.  In countries where the black market is important, the voluntary compliance rate is very low and cannot be properly calculated.  Residents are generally subject to different taxation than non-residents. Few jurisdictions impose on non-residents, except for certain types of income collected within the jurisdiction. See z.B the debate on the imposition of foreign persons by the United States. However, residents are generally subject to income tax on all global income. [Notes 1] A handful of countries (including Singapore and Hong Kong) tax residents only on income collected in the country or transferred to the country. The subject may have to pay taxes in a country where he or she is a tax resident and pay taxes in another country where he or she is a foreigner.
This creates a double taxation situation that requires an assessment of the double taxation agreement made by the countries in which the subject is considered resident and non-resident for the same transaction. Tax rates are very different. Some systems write higher rates for income. Example: Elbonia imposes incomes below E.10,000 to 20% and other incomes to 30%. Joe has 15,000 income. Its tax is E.3,500. Tax rates may vary for individuals based on marital status.  In India, on the other hand, there is a record-set system with a zero tax rate for incomes below 2.5 lakhs per year, and 5% for those with incomes of 2.50,001 to 5,000 INR. In this way, the tax rate increases with each disc and reaches a tax rate of 30% for people with incomes above 15.00,000 INR.
 On August 5, 1861, the U.S. federal government imposed the first income tax to pay for its war efforts during the American Civil War – (3% of all income over US$800) (equivalent to $22,800 in 2019).    This tax was abolished and replaced in 1862 with another income tax.   It was not until 1894 that the first peacetime income tax was introduced by the Wilson-Gorman tariff. The rate was 2% for incomes above $4,000 (or $118,000 in 2019), which meant that less than 10% of households would pay. The objective of income tax was to offset revenue that would be lost as a result of tariff reductions.  The U.S. Supreme Court has declared income tax unconstitutional, the 10th Amendment prohibits any power not expressed in the U.S. Constitution, and there is no power to impose a tax other than a direct tax per division.
Individuals are often taxed at different rates than businesses. Among individuals, there are only human beings. Tax regimes in countries other than the United States treat a business as capital only if it is legally organized as an entity.