What is the tax bracket percentage for a person making 21923 a year?

For 2006, if you were single and had "taxable income" of 21,923, your federal income tax would be $2,911 or 13.3%. However, if 21,923 was your total gross income, and no one else can claim you as a dependent, you get a standard deuction of 8,450, taxable income of 13,473 and your tax is 1,644 which is 12.2% of the taxable amount and 7.5% of 21,923. This is federal taxes only...state tax varies by state.