Taxes owed are not calculated on the AGI. They are calculated on your taxable income on the Form 1040 Line 15. This is after the Standard Deduction has been subtracted from the AGI.
Your Taxable income is different than your AGI . Once you have calculated adjusted gross income, you can subtract any deductions for which you qualify (either itemized or standard) to arrive at taxable income which is used to calculate the amount of tax you owe.
Form 1040 line 15 shows your taxable Income.
Sorry, I meant to say that my Taxable Income is $30,000. Filing Single, I think the tax on that should be $3,371 not $2,219.
There are like 7 different ways to calculate the tax.
It's very common for the tax to be less than you can figure using the IRS tables. It depends what kind of income you have.
Even though the full amount shows up in the total income on the 1040 line 7, if you have capital gains or qualified dividends the tax is not taken from the tax table but is calculated separately from Schedule D. The tax will be calculated on the Qualified Dividends and Capital Gain Tax Worksheet. It does not get filed with your return. In the online version you need to save your return as a pdf file and include all the worksheets to see it.
@hstivers On your tax return did you enter any Qualified Dividends and/or Capital Gains? If so, the taxes are calculated using the Qualified Dividends and Capital Gains worksheet, not the tax tables.