Calculate Income Tax 2015 Usa

Calculating your 2015 US income tax requires understanding the tax brackets, deductions, and credits applicable to your filing status. This guide explains the process step-by-step and provides a calculator to compute your estimated tax liability.

How to Calculate 2015 US Income Tax

The process of calculating your 2015 US income tax involves several steps:

Determine your taxable income by subtracting allowable deductions from your gross income.
Apply the appropriate tax rates based on your filing status and taxable income.
Account for any tax credits that reduce your tax liability.
Calculate your estimated tax payment if applicable.

The IRS uses progressive tax brackets, meaning higher income levels are taxed at higher rates. The 2015 tax brackets vary by filing status, as shown in the next section.

2015 US Tax Brackets

The 2015 tax brackets for federal income tax are as follows:

Tax Brackets by Filing Status

Filing Status	10% Bracket	15% Bracket	25% Bracket	28% Bracket	33% Bracket	35% Bracket	39.6% Bracket
Single	$0 - $9,075	$9,076 - $36,900	$36,901 - $89,350	$89,351 - $186,350	$186,351 - $405,100	$405,101 - $406,750	$406,751+
Married Filing Jointly	$0 - $18,150	$18,151 - $73,800	$73,801 - $148,850	$148,851 - $226,850	$226,851 - $405,100	$405,101 - $457,600	$457,601+
Married Filing Separately	$0 - $9,075	$9,076 - $36,900	$36,901 - $74,425	$74,426 - $113,425	$113,426 - $202,550	$202,551 - $228,800	$228,801+
Head of Household	$0 - $12,950	$12,951 - $49,400	$49,401 - $127,550	$127,551 - $206,600	$206,601 - $405,100	$405,101 - $432,200	$432,201+

The tax brackets are applied progressively, meaning each dollar of income in a higher bracket is taxed at the higher rate. For example, if you earn $50,000 as a single filer, $9,075 is taxed at 10%, $27,825 at 15%, and $9,100 at 25%.

Deductions and Credits

Deductions reduce your taxable income, while credits directly reduce your tax liability. Common deductions and credits for 2015 include:

Standard Deductions

Single: $6,300
Married Filing Jointly: $12,600
Married Filing Separately: $6,300
Head of Household: $9,250

Itemized deductions may offer larger savings than the standard deduction, depending on your situation. Common itemized deductions include:

Mortgage interest
State and local taxes
Medical expenses
Charitable contributions

Tax credits include:

Child Tax Credit: $1,000 per qualifying child
Earned Income Tax Credit (EITC): Up to 40% of earned income for low- to moderate-income workers
American Opportunity Credit: Up to $2,500 for qualified education expenses

Example Calculation

Let's calculate the tax for a single filer with $50,000 gross income and no deductions or credits.

Calculation Steps

Taxable Income = Gross Income - Deductions = $50,000 - $0 = $50,000
First $9,075 taxed at 10%: $9,075 × 0.10 = $907.50
Next $27,825 taxed at 15%: $27,825 × 0.15 = $4,173.75
Remaining $9,100 taxed at 25%: $9,100 × 0.25 = $2,275.00
Total Tax = $907.50 + $4,173.75 + $2,275.00 = $7,356.25

The estimated tax for this example is $7,356.25. Keep in mind that this is a simplified example and does not account for deductions, credits, or other factors that may affect your actual tax liability.

Frequently Asked Questions

What is the standard deduction for 2015?: The standard deduction for 2015 was $6,300 for single filers, $12,600 for married filing jointly, $6,300 for married filing separately, and $9,250 for heads of household.
How do I calculate my taxable income?: Subtract your allowable deductions from your gross income to determine your taxable income. You can choose between the standard deduction or itemized deductions, whichever provides the larger reduction.
What are the tax brackets for 2015?: The 2015 tax brackets vary by filing status. For single filers, the brackets are 10%, 15%, 25%, 28%, 33%, 35%, and 39.6%. The brackets are applied progressively to your taxable income.
What are the most common tax credits?: Common tax credits for 2015 include the Child Tax Credit, Earned Income Tax Credit (EITC), and American Opportunity Credit. These credits directly reduce your tax liability.
When is the tax deadline for 2015?: The tax deadline for 2015 was April 15, 2016. However, if April 15 fell on a weekend or holiday, the deadline was extended to the next business day.