Usa Tax Bracket 2018 Calculator
'/%3E%3Ccircle cx='48' cy='39' r='19' fill='%23f2c9a5'/%3E%3Cpath d='M27 35c3-16 39-17 42 2-8-8-27-9-42-2z' fill='%23374151'/%3E%3Cpath d='M21 86c5-24 49-28 56 0z' fill='%232563eb'/%3E%3Ccircle cx='41' cy='41' r='2' fill='%23111827'/%3E%3Ccircle cx='55' cy='41' r='2' fill='%23111827'/%3E%3Cpath d='M42 52c4 3 9 3 13 0' stroke='%2392400e' stroke-width='3' fill='none' stroke-linecap='round'/%3E%3C/svg%3E)
Reviewed by Calculator Editorial Team
The 2018 USA Tax Bracket Calculator helps you determine your federal income tax liability based on your taxable income. This calculator uses the 2018 tax brackets and rates to provide an estimate of how much you would owe in federal income taxes.
How the 2018 USA Tax Bracket Calculator Works
The calculator uses the 2018 federal income tax brackets and rates to determine your tax liability. Here's how it works:
- Enter your total taxable income for the year.
- Select your filing status (Single, Married Filing Jointly, Married Filing Separately, Head of Household, or Qualifying Widow(er)).
- Click "Calculate" to see your estimated federal income tax.
The calculator applies the progressive tax rates to your income, meaning higher income levels are taxed at higher rates. The results are based on the standard deduction amounts for 2018.
Formula Used
The tax calculation is based on the following formula:
Tax = (Income × Tax Rate) - (Standard Deduction × Tax Rate)
Where:
- Income = Your total taxable income
- Tax Rate = The applicable federal income tax rate based on your filing status and income level
- Standard Deduction = The standard deduction amount for your filing status
2018 Federal Income Tax Brackets
The 2018 federal income tax brackets and rates are as follows:
Standard Deductions for 2018
- Single: $12,000
- Married Filing Jointly: $24,000
- Married Filing Separately: $12,000
- Head of Household: $18,000
- Qualifying Widow(er): $24,000
Tax Rates by Filing Status
All filing statuses use the same tax rates:
- 10% on the first $9,525 of taxable income
- 12% on the next $29,975
- 22% on the next $56,250
- 24% on the next $112,500
- 32% on the next $225,000
- 35% on the next $450,000
- 37% on amounts over $675,000
Example Calculation
Let's calculate the federal income tax for a single filer with $50,000 in taxable income.
- Subtract the standard deduction: $50,000 - $12,000 = $38,000 taxable income
- Calculate tax on the first $9,525: $9,525 × 10% = $952.50
- Calculate tax on the next $29,975: $29,975 × 12% = $3,597.00
- Calculate tax on the remaining $8,500: $8,500 × 22% = $1,870.00
- Total tax: $952.50 + $3,597.00 + $1,870.00 = $6,419.50
Using the calculator, you would enter $50,000 as your income and select "Single" as your filing status to get this result.
Frequently Asked Questions
What is the difference between taxable income and gross income?
Taxable income is your gross income minus any deductions that apply to you. Deductions can include things like contributions to retirement accounts, student loan interest, and certain medical expenses.
Are there any additional taxes besides federal income tax?
Yes, there are several other taxes including state income tax, Social Security tax, and Medicare tax. This calculator only calculates federal income tax.
How do I know if I qualify for a different filing status?
You should consult with a tax professional or the IRS website to determine your correct filing status. Common statuses include Single, Married Filing Jointly, and Head of Household.
Is this calculator accurate for all income levels?
This calculator provides an estimate based on the 2018 tax brackets and rates. For precise tax calculations, you should consult with a tax professional or use official IRS tax software.