2018 Federal Income Tax Rate Calculator

How to Use This Calculator

Enter your total taxable income in the calculator below. The calculator will automatically compute your federal income tax based on the 2018 tax brackets. You can also adjust the standard deduction if you qualify for a different amount.

The calculator shows your tax liability, the tax rate applied, and a breakdown of how much tax is paid in each bracket. For a more detailed explanation of how the calculation works, see the "How This Is Calculated" section below.

2018 Federal Income Tax Brackets

The 2018 federal income tax brackets for single filers are as follows:

• 10% on taxable income up to $9,525
• 12% on taxable income between $9,526 and $38,700
• 22% on taxable income between $38,701 and $82,500
• 24% on taxable income between $82,501 and $157,500
• 32% on taxable income between $157,501 and $200,000
• 35% on taxable income between $200,001 and $500,000
• 37% on taxable income over $500,000

These rates apply to single filers. Married filing jointly, head of household, and other filing statuses have different brackets. The calculator uses the single filer brackets by default.

Standard Deduction

The standard deduction for single filers in 2018 was $12,000. This amount reduces your taxable income before applying the tax brackets. For example, if you earned $40,000 and claimed the standard deduction, your taxable income would be $28,000.

You can adjust the standard deduction in the calculator if you qualify for a different amount, such as the blind or elderly standard deduction.

Example Calculation

Let's calculate the federal income tax for a single filer with $50,000 in taxable income:

1. First $9,525 at 10%: $952.50
2. Next $29,175 ($38,700 - $9,525) at 12%: $3,501.00
3. Remaining $6,200 ($50,000 - $47,775) at 22%: $1,364.00

Total tax: $952.50 + $3,501.00 + $1,364.00 = $5,817.50

This example shows how progressive taxation works - higher income is taxed at higher rates.