Gross income is all income before deductions, while taxable income is that portion of income subject to tax. When is gross income equal to adjusted gross income (AGI)? Why is AGI such a significant number?
Gross income reduced by certain deductions derives AGI. These deductions are:
Educator expenses |
Business exp |
HSA 8889 |
Moving 3903 |
Deductible self employment tax |
SEP SIMPLE qualified plans |
SE health insurance |
Penalty early with savings |
Alimony paid |
IRA contributions |
Student loan interest |
Tuition fee 8917 |
Domostic production 8903 |
After reducing gross income by above deductions, AGI comes. Based on AGI several deductions are calculated. personal exemptions and itemized deductions phases out based on AGI level. Within itemized deductions medical deductions, business expenses, casualty loss deduction are subject to AGI floor limitation.
Several other credits such as education credits, dependent care credit, child tax credit, retirement savers credit are also based on AGI.
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