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Taxes are compulsory payments made by individuals and businesses to
government treasuries to finance public services. Some taxes are
directed to specific purposes, however, and these are often called
“benefit taxes.” As an example of a benefit tax, consider the social
security payments made by individuals to fund public pensions and
unemployment insurance (employment insurance in Canada), which are made
available to the whole population. Individuals must pay the tax (and
then receive the benefit as determined by law) without choice.
Taxes are not the only source of government revenue. Governments also
use non-tax revenues, including royalties paid by companies for the
extraction of resources from public lands, profits from Crown
corporations, fees paid for use of public services, grants (such as
foreign aid), investment income, fines, and voluntary transfers to the
state. In some countries, non-tax revenues can make up a significant
share of total revenues raised by governments.
Table 1.2 shows that total revenues raised by the OECD countries are
uniformly higher than the taxes paid. For example, in 2005 Canada’s
total government revenues as a share of GDP were 40.8 percent, while
taxes made up only 33.4 percent. Tax revenues account for the bulk of
payments made by individuals and businesses, but non-tax revenues
constituted 7.4 percent of the GDP in 2005, which is about one-fifth of
total revenues. A significant part of non-tax revenues are resource
royalty payments and user fees, such as tuition fees at public
universities and colleges.
As a broad generalization, government expenditures and aggregate taxes
have been rising fairly steadily in almost all developed countries for
upward of three centuries. In the early years, these increases reflected
the growth in the power of centralized nation states as well as the
rising costs of wars. But while the costs of military preparedness has
historically been an important factor in explaining the growth of
governments, the rapid growth of welfare and social services has been
more critical, especially since the Great Depression of the 1930s.
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