2015 US Federal Tax Calculator
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Reviewed by Calculator Editorial Team
Calculate your 2015 US federal income tax using this official IRS-based calculator. The tool accounts for tax brackets, filing status, and standard deductions to provide an accurate estimate of your federal tax liability.
How to Use This Calculator
Enter your total taxable income and select your filing status to calculate your 2015 federal income tax. The calculator automatically applies the correct tax brackets and standard deduction for your situation.
This calculator provides an estimate based on 2015 tax laws. For exact figures, consult a tax professional or use official IRS forms.
2015 Tax Brackets
The 2015 federal income tax rates were:
| Tax Rate | Single Filers | Married Filing Jointly | Married Filing Separately | Head of Household |
|---|---|---|---|---|
| 10% | $0 - $9,075 | $0 - $18,150 | $0 - $9,075 | $0 - $12,950 |
| 15% | $9,076 - $36,900 | $18,151 - $73,800 | $9,076 - $36,900 | $12,951 - $49,400 |
| 25% | $36,901 - $89,350 | $73,801 - $148,850 | $36,901 - $89,350 | $49,401 - $176,750 |
| 28% | $89,351 - $186,350 | $148,851 - $226,850 | $89,351 - $186,350 | $176,751 - $223,750 |
| 33% | $186,351 - $405,100 | $226,851 - $405,100 | $186,351 - $405,100 | $223,751 - $447,600 |
| 35% | $405,101 - $406,750 | $405,101 - $457,600 | $405,101 - $434,550 | $447,601 - $625,600 |
| 39.6% | $406,751+ | $457,601+ | $434,551+ | $625,601+ |
Filing Status Options
Choose the filing status that matches your situation:
- Single - Not married and not claiming a dependent
- Married Filing Jointly - Married and filing a joint return
- Married Filing Separately - Married but filing separately
- Head of Household - Single with a dependent and meeting IRS requirements
Standard Deduction
The standard deduction for 2015 was:
- Single: $6,300
- Married Filing Jointly: $12,600
- Married Filing Separately: $6,300
- Head of Household: $9,300
The standard deduction reduces your taxable income by the specified amount.
How the Calculation Works
The calculator follows these steps:
- Subtract the standard deduction from your total income to get taxable income
- Apply the tax brackets progressively to the taxable income
- Sum the tax owed in each bracket to get the total federal income tax
Formula: Federal Tax = Sum of (Taxable Income × Tax Rate) for each applicable bracket
Worked Example
For a single filer with $50,000 total income:
- Taxable income = $50,000 - $6,300 (standard deduction) = $43,700
- First $9,075 at 10% = $907.50
- Next $27,825 at 15% = $4,173.75
- Remaining $8,800 at 25% = $2,200.00
- Total federal tax = $907.50 + $4,173.75 + $2,200.00 = $7,281.25