Income tax and many of its states and Switzerland, impose the higher of regular income tax or an alternative tax. Switzerland and U.S. states generally impose such tax only on corporations and base it on capital or a similar measure. Income tax is generally collected in one of two ways: through withholding of tax at source and/or through payments directly by taxpayers. Nearly all jurisdictions require those paying employees or nonresidents to withhold income tax from such payments. The amount to be withheld is a fixed percentage where the tax itself is at a fixed rate. Alternatively, the amount to be withheld
Income tax in Singapore of assessment is based on income earned in the preceding calendar year. Taxation is based on the source principle, in which only income earned at source, in this case in Singapore, or those derived from overseas but received in Singapore, are taxable. Any income arising from sources outside Singapore and received in Singapore on or after 1 January 2004 by an individual (other than partners of a partnership) is exempt from tax. This system has the potential to allow for tax avoidance practiced by individuals who derive income from abroad, gain tax exemptions via their non-resident status there, and use