Usa Tax 2015 Calculator

Calculate your 2015 US federal income tax with this free online calculator. The 2015 tax year ran from January 1, 2015 to December 31, 2015, and used the tax rates and brackets from the American Taxpayer Relief Act of 2012.

How to Use This Calculator

Enter your total taxable income for the 2015 tax year in the calculator panel on the right. The calculator will compute your federal income tax liability based on the 2015 tax brackets and rates.

For more accurate results, you can also enter any deductions or credits you qualify for. The calculator will show you the final amount you owe or the refund you may receive.

This calculator provides an estimate only. For exact tax calculations, consult a tax professional or use official IRS forms.

How the 2015 US Tax System Works

The US federal income tax system in 2015 used progressive tax brackets that applied to your taxable income. The taxable income is calculated by subtracting certain deductions from your total income.

2015 Tax Brackets

Tax Rate	Single Filers	Married Filing Jointly	Married Filing Separately	Head of Household
10%	$0 - $9,075	$0 - $18,150	$0 - $9,075	$0 - $12,950
15%	$9,076 - $36,900	$18,151 - $73,800	$9,076 - $36,900	$12,951 - $49,400
25%	$36,901 - $89,350	$73,801 - $148,850	$36,901 - $89,350	$49,401 - $170,750
28%	$89,351 - $186,350	$148,851 - $226,850	$89,351 - $186,350	$170,751 - $372,750
33%	$186,351 - $413,350	$226,851 - $405,100	$186,351 - $413,350	$372,751 - $413,350
35%	$413,351 - $415,050	$405,101 - $432,800	$413,351 - $415,050	$413,351 - $415,050
39.6%	$415,051+	$432,801+	$415,051+	$415,051+

Standard Deductions

The standard deduction for the 2015 tax year was:

Single filers: $6,300
Married filing jointly: $12,600
Married filing separately: $6,300
Head of household: $9,250

Common Deductions and Credits

In addition to the standard deduction, you may qualify for other deductions and credits that can reduce your taxable income or lower your tax bill.

Itemized Deductions

If your itemized deductions exceed the standard deduction, you can use them instead. Common itemized deductions include:

Mortgage interest
State and local taxes
Medical expenses
Charitable contributions
Casualty and theft losses

Tax Credits

Tax credits directly reduce the amount of tax you owe. Some common tax credits in 2015 included:

Earned Income Tax Credit (EITC)
Child Tax Credit
American Opportunity Credit
Lifetime Learning Credit

Worked Examples

Example 1: Single Filer with $50,000 Income

Taxable income: $50,000 - $6,300 (standard deduction) = $43,700

Tax calculation:

$9,075 × 10% = $907.50
($36,900 - $9,075) × 15% = $3,976.25
($43,700 - $36,900) × 25% = $1,725

Total tax: $907.50 + $3,976.25 + $1,725 = $6,608.75

Example 2: Married Filing Jointly with $100,000 Income

Taxable income: $100,000 - $12,600 (standard deduction) = $87,400

Tax calculation:

$18,150 × 10% = $1,815
($73,800 - $18,150) × 15% = $8,332.50
($87,400 - $73,800) × 25% = $3,600

Total tax: $1,815 + $8,332.50 + $3,600 = $13,747.50

Frequently Asked Questions

What is the difference between taxable income and gross income?: Gross income is all the money you earn before any deductions. Taxable income is your gross income minus certain deductions and exemptions.
How do I know if I qualify for itemized deductions?: You qualify for itemized deductions if your total deductions exceed the standard deduction for your filing status. You must also itemize your deductions on Schedule A.
What is the Earned Income Tax Credit (EITC)?: The EITC is a refundable tax credit for low- to moderate-income working individuals and families. It can provide up to $6,276 for individuals and $11,430 for families in 2015.
When is the tax deadline for the 2015 tax year?: The tax deadline for the 2015 tax year was April 15, 2016. However, if you filed an extension, you had until October 15, 2016 to file your return.
Where can I find official IRS forms for the 2015 tax year?: You can find official IRS forms for the 2015 tax year on the IRS website at https://www.irs.gov/forms-pubs/about-forms.