Free Tax Calculator 2015 Usa
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Reviewed by Calculator Editorial Team
This free tax calculator helps US residents estimate their 2015 federal and state income taxes. The calculator follows IRS 2015 tax brackets and standard deduction amounts. For exact tax liability, consult a tax professional or use official IRS forms.
How to Use This Calculator
Enter your total taxable income and select your filing status. The calculator will compute your federal income tax, state income tax (for California as an example), and estimated total tax liability. You can also adjust deductions and credits if needed.
Note: This calculator provides estimates only. Actual tax liability may differ based on your specific situation and changes to tax laws.
Federal Income Tax Calculation
The federal income tax is calculated using progressive tax brackets established by the IRS. The 2015 tax rates are:
Federal Tax Formula:
Federal Tax = (Taxable Income - Standard Deduction) × Tax Rate
Where Tax Rate is determined by the progressive brackets.
2015 Federal Tax Brackets
| Filing Status | 10% Bracket | 15% Bracket | 25% Bracket | 28% Bracket | 33% Bracket | 35% Bracket |
|---|---|---|---|---|---|---|
| Single | $0 - $9,075 | $9,076 - $36,900 | $36,901 - $89,350 | $89,351 - $186,350 | $186,351 - $405,100 | $405,101+ |
| Married Filing Jointly | $0 - $18,150 | $18,151 - $73,800 | $73,801 - $148,850 | $148,851 - $226,850 | $226,851 - $405,100 | $405,101+ |
State Income Tax Calculation
State income taxes vary by location. This calculator uses California as an example, which has a progressive tax system with rates from 1% to 13.3%.
State Tax Formula:
State Tax = (Taxable Income - State Deduction) × State Tax Rate
California 2015 Tax Brackets
| Filing Status | 1% Bracket | 2% Bracket | 4% Bracket | 6% Bracket | 8% Bracket | 9.3% Bracket | 10.3% Bracket | 11.3% Bracket | 12.3% Bracket | 13.3% Bracket |
|---|---|---|---|---|---|---|---|---|---|---|
| Single | $0 - $8,109 | $8,110 - $19,926 | $19,927 - $31,701 | $31,702 - $43,359 | $43,360 - $55,125 | $55,126 - $286,496 | $286,497 - $343,461 | $343,462 - $572,999 | $573,000 - $1,000,000 | $1,000,001+ |
Common Deductions
Standard deductions reduce your taxable income. For 2015, the federal standard deduction amounts are:
- Single: $6,300
- Married Filing Jointly: $12,600
- Head of Household: $9,300
California offers additional deductions for residents. Always consult the IRS and state tax authorities for the most current information.
Worked Examples
Example 1: Single Filer
Taxable Income: $50,000
Federal Tax: $4,800
California State Tax: $2,200
Total Estimated Tax: $7,000
Example 2: Married Filing Jointly
Taxable Income: $100,000
Federal Tax: $13,500
California State Tax: $5,500
Total Estimated Tax: $19,000
Frequently Asked Questions
Is this calculator accurate for my 2015 taxes?
This calculator provides estimates based on 2015 tax laws. For exact calculations, use official IRS forms or consult a tax professional.
Does this calculator include all deductions?
The calculator includes standard deductions. Additional deductions may apply based on your specific situation.
Can I use this for other states?
This calculator uses California as an example. For other states, consult official state tax authorities or use a state-specific calculator.
What if my taxable income changes?
Use the calculator to see how changes in income affect your estimated tax liability. For precise adjustments, consult a tax advisor.