Income tax is one of the most important components of a nation’s fiscal system. It is the main source of funds for governments to finance public services and undertake large infrastructure projects. From the perspective of individuals, paying income tax is a major financial burden that can significantly reduce their disposable income. This article will provide an overview of income tax in the United States, including how it works, who has to pay it, and how to calculate it.
Income tax in the United States began in the early 20th century, with the Revenue Act of 1913 establishing the federal income tax system. The income tax rate varies based on the amount of income a person earns, and range up to 37% for the highest earners. This rate applies to both individual taxpayers, as well as to corporations.
The tax liability for individuals is calculated based on their total adjusted gross income (AGI), which is the total of all their income from wages, investments and other sources. Generally, lower incomes are taxed at a lower rate than higher incomes. For example, in 2019, married couples filing jointly with an AGI of up to $19,400 are subject to a tax rate of 10%. As the AGI increases, the rate goes up; for AGIs of $452,400 or more, the tax rate is 37%.
When calculating tax liability, individuals also need to take into account deductions and credits. Deductions reduce the amount of income that is taxable, such as a deduction for money donated to charity. Credits reduce the amount of tax that is paid, such as a credit for child care expenses or for higher education costs.
In addition to the federal income tax, some states also impose their own income tax. Generally, states use the same basic rules as the federal government to calculate the taxes owed, but the rates and the amount of deductions and credits available may vary. For example, in the state of California, the top income tax rate is 13.3%.
Income tax is an important source of revenue for governments and ensures that everyone contributes their fair share. For individuals, understanding the tax code and taking advantage of deductions and credits can reduce their tax liability and save them money.