Tax Calculator Usa 2018
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Reviewed by Calculator Editorial Team
Calculate your 2018 US federal income tax with this accurate tax calculator. Simply enter your income, select your filing status, and see your estimated tax liability. The calculator uses the 2018 tax brackets and standard deductions to provide a precise estimate.
How to Use This Tax Calculator
Using this tax calculator is simple and straightforward:
- Enter your total taxable income in the "Income" field.
- Select your filing status from the dropdown menu.
- Click the "Calculate" button to see your estimated tax.
- Review the results and any additional information provided.
The calculator will display your estimated federal income tax based on the 2018 tax brackets and standard deductions. Keep in mind that this is an estimate and your actual tax liability may vary.
Formula Used
The tax calculator uses the following formula to calculate your federal income tax:
The standard deduction amounts and tax rates used are based on the 2018 tax year. The calculator applies the appropriate tax rate based on your income and filing status.
Worked Example
Let's walk through an example to see how the tax calculator works. Suppose you have a taxable income of $50,000 and you are filing as "Single".
- Enter $50,000 in the "Income" field.
- Select "Single" from the filing status dropdown.
- Click "Calculate".
The calculator will:
- Apply the 2018 standard deduction of $12,000 for single filers.
- Calculate taxable income: $50,000 - $12,000 = $38,000.
- Apply the appropriate tax rate for $38,000 (22% in 2018).
- Calculate tax: $38,000 × 22% = $8,360.
The result will show your estimated federal income tax as $8,360.
Understanding Filing Status
Your filing status determines which tax brackets and deductions apply to your tax return. The common filing statuses are:
- Single: You are unmarried and not living with a spouse.
- Married Filing Jointly: You and your spouse are filing a joint return.
- Married Filing Separately: You and your spouse are filing separate returns.
- Head of Household: You are unmarried and have a dependent child living with you.
Selecting the correct filing status is crucial for accurate tax calculations. The calculator uses the appropriate standard deductions and tax rates based on your selected filing status.
2018 US Tax Brackets
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+ |
| Married Filing Separately | $0 - $9,525 | $9,526 - $38,700 | $38,701 - $82,500 | $82,501 - $157,500 | $157,501 - $200,000 | $200,001 - $300,000 | $300,001+ |
| Head of Household | $0 - $13,600 | $13,601 - $51,800 | $51,801 - $82,500 | $82,501 - $157,500 | $157,501 - $200,000 | $200,001 - $500,000 | $500,001+ |
The calculator applies the appropriate tax rate based on your income and filing status. For example, a single filer with $50,000 income would have $38,000 in the 22% tax bracket.
Frequently Asked Questions
Is this calculator accurate for my 2018 tax return?
This calculator provides an estimate based on the 2018 tax brackets and standard deductions. For an exact calculation, consult a tax professional or use official IRS tax software.
What if I have itemized deductions instead of using the standard deduction?
This calculator uses the standard deduction amounts. If you have significant itemized deductions, your actual tax liability may be lower. Consult a tax professional for personalized advice.
Does this calculator include state taxes?
No, this calculator only calculates federal income tax. State taxes vary by location and are not included in this estimate.
What if I have additional income sources like rental income or capital gains?
This calculator focuses on ordinary income. Additional income sources may have different tax treatments. Consult a tax professional for comprehensive tax planning.