Earned Income Tax Credit

The maximum Earned Income Tax Credit in 2018 for single and joint filers is $520, if the filer has no children (Table 9). The credit is $3,468 for one child, $5,728 for two children, and $6,444 for three or more children. All of these are relatively small increases from 2017 https://www.irs.gov/credits-deductions/individuals/earned-income-tax-credit/eitc-income-limits-maximum-credit-amounts-next-year

Income Tax Brackets and Rates

In 2018, the income limits for all tax brackets and all filers will be adjusted for inflation and will be as follows (Tables 1 and 2). The top marginal income tax rate of 37 percent will hit taxpayers with taxable income of $500,000 and higher for single filers and $600,000 and higher for married couples […]

Example of Unearned Income

Examples of income that are not earned income: Pay received for work while an inmate in a penal institution Interest and dividends Retirement income Social security Unemployment benefits Alimony Child support.