2018 State and Federal Income Tax Calculator
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Reviewed by Calculator Editorial Team
Use this 2018 state and federal income tax calculator to estimate your tax liability based on your income, filing status, and deductions. The calculator uses official 2018 tax brackets and rates to provide an accurate estimate of your federal and state income taxes.
How to Use This Calculator
To calculate your 2018 income taxes:
- Enter your total taxable income for the year.
- Select your filing status (Single, Married Filing Jointly, etc.).
- Enter any applicable deductions (standard deduction or itemized deductions).
- Select your state of residence.
- Click "Calculate" to see your estimated federal and state taxes.
The calculator will display your total tax liability, federal tax amount, and state tax amount. You can also view a breakdown of your taxes in the chart below the results.
Federal Tax Brackets for 2018
The 2018 federal income tax brackets are as follows:
| Filing Status | 10% Bracket | 12% Bracket | 22% Bracket | 24% Bracket | 32% Bracket | 35% Bracket | 37% Bracket |
|---|---|---|---|---|---|---|---|
| Single | $0 - $9,525 | $9,526 - $38,700 | $38,701 - $82,500 | $82,501 - $157,500 | $157,501 - $200,000 | $200,001 - $500,000 | $500,001+ |
| Married Filing Jointly | $0 - $19,050 | $19,051 - $77,400 | $77,401 - $165,000 | $165,001 - $315,000 | $315,001 - $400,000 | $400,001 - $600,000 | $600,001+ |
These brackets apply to your taxable income after deductions. The calculator uses these brackets to determine your federal tax liability.
State Tax Brackets for 2018
State tax brackets vary by state. The calculator includes tax brackets for common states. For example, California's 2018 state tax brackets are:
| 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 - $8,616 | $8,617 - $20,426 | $20,427 - $32,069 | $32,070 - $43,965 | $43,966 - $55,861 | $55,862 - $288,607 | $288,608 - $344,449 | $344,450 - $577,214 | $577,215 - $1,000,000 | $1,000,001+ |
| Married Filing Jointly | $0 - $17,232 | $17,233 - $40,852 | $40,853 - $64,138 | $64,139 - $87,930 | $87,931 - $111,722 | $111,723 - $577,214 | $577,215 - $688,898 | $688,899 - $1,154,428 | $1,154,429 - $2,000,000 | $2,000,001+ |
Note that state tax brackets may differ for other states. The calculator provides an estimate based on the most common state tax brackets.
Filing Status Options
You can choose from the following filing status options:
- Single - For individuals who are unmarried and did not have a dependent spouse.
- Married Filing Jointly - For married couples who file their taxes together.
- Married Filing Separately - For married couples who file their taxes separately.
- Head of Household - For individuals who are unmarried but have a dependent child.
- Qualifying Widow(er) - For individuals who are widowed and meet certain criteria.
Selecting the correct filing status is important for accurate tax calculations.
Example Calculation
Let's calculate the taxes for a single filer with $50,000 in taxable income and a $12,000 standard deduction:
- Taxable Income = $50,000 - $12,000 = $38,000
- Federal Tax:
- $9,525 × 10% = $952.50
- ($38,000 - $9,525) × 12% = $3,256.80
- Total Federal Tax = $952.50 + $3,256.80 = $4,209.30
- State Tax (California example):
- $8,616 × 1% = $86.16
- ($20,426 - $8,616) × 2% = $23,822 × 0.02 = $476.44
- ($38,000 - $20,426) × 4% = $17,574 × 0.04 = $698.96
- Total State Tax = $86.16 + $476.44 + $698.96 = $1,261.56
- Total Tax Liability = $4,209.30 + $1,261.56 = $5,470.86
This example shows how the calculator breaks down your taxes based on your income and filing status.
Frequently Asked Questions
- How accurate is this tax calculator?
- This calculator provides an estimate based on 2018 tax brackets and rates. For exact figures, consult a tax professional or use official IRS forms.
- Can I use this calculator for past or future years?
- This calculator is specifically designed for 2018 tax calculations. For other years, use the appropriate tax calculator.
- Does this calculator include state taxes?
- Yes, the calculator includes state taxes for common states. Select your state of residence to get an accurate estimate.
- What deductions should I enter?
- Enter either your standard deduction or your itemized deductions, whichever is greater. The calculator will subtract these from your taxable income.
- Is my personal information secure?
- All calculations are done locally in your browser. No data is sent to our servers, ensuring your privacy.