Usa 2017 Income Tax Calculator
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Reviewed by Calculator Editorial Team
Use this calculator to determine your 2017 US federal income tax liability. The calculator applies the 2017 tax rates, brackets, and standard deductions. For more complex situations, consult a tax professional.
How the 2017 US Tax Calculator Works
The 2017 US federal income tax is calculated using progressive tax brackets. The calculator follows these steps:
- Subtract the standard deduction from your taxable income
- Apply the tax rates to the taxable income in each bracket
- Sum the taxes from all brackets to get your total tax liability
Tax Calculation Formula
Tax = Σ (Taxable Income × Tax Rate) for each bracket
Where Taxable Income = Gross Income - Standard Deduction
For married filing jointly, the standard deduction was $12,700 in 2017. For single filers, it was $6,350. These amounts are automatically applied in the calculator.
2017 Federal Income Tax Brackets
The 2017 federal income tax rates were:
| Taxable Income | Tax Rate |
|---|---|
| $0 - $9,325 | 10% |
| $9,326 - $37,950 | 15% |
| $37,951 - $91,900 | 25% |
| $91,901 - $191,650 | 28% |
| $191,651 - $416,700 | 33% |
| $416,701 - $418,400 | 35% |
| $418,401+ | 39.6% |
These rates apply to single filers. Married filing jointly had different brackets, but the calculator uses the single filer rates by default.
Common Deductions and Credits
In addition to the standard deduction, you may qualify for other deductions and credits:
- Itemized deductions (mortgage interest, state/local taxes, medical expenses)
- Child tax credit ($1,000 per qualifying child)
- Earned income credit (for low- to moderate-income workers)
- American opportunity credit (for college expenses)
Note: This calculator only applies the standard deduction. For more accurate results, consult a tax professional or use IRS Form 1040.
Worked Example
Let's calculate the tax for a single filer with $50,000 gross income:
- Subtract standard deduction: $50,000 - $6,350 = $43,650 taxable income
- Apply tax brackets:
- $9,325 × 10% = $932.50
- ($37,950 - $9,325) × 15% = $3,823.75
- ($43,650 - $37,950) × 25% = $1,382.50
- Total tax: $932.50 + $3,823.75 + $1,382.50 = $6,138.75
This matches the calculator's result for $50,000 gross income.
Frequently Asked Questions
- What's the difference between gross income and taxable income?
- Gross income is your total earnings before any deductions. Taxable income is gross income minus deductions and exemptions.
- Are state taxes included in this calculator?
- No, this calculator only calculates federal income tax. State taxes vary by location and should be calculated separately.
- How do I find my standard deduction amount?
- The standard deduction depends on your filing status (single, married, head of household) and is available on IRS Publication 17.
- What about tax credits versus deductions?
- Credits directly reduce your tax bill dollar-for-dollar, while deductions reduce your taxable income. This calculator focuses on the standard deduction.