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1040 Tax Calculator

Enter your filing status, income, deductions and credits and we will estimate your total taxes. Based on your projected tax withholding for the year, we can also estimate your tax refund or amount you may owe the IRS next April.

1040 Tax Calculator Definitions

Federal Income Tax Rates:
**TAXTABLE_TAXYEAR_DEFINITION**
Filing status
Choose your filing status. Your filing status determines the income levels for your Federal tax bracket. It is also important for calculating your standard deduction, personal exemptions, and deduction phase out incomes. The table below summarizes the five possible filing status choices. It is important to understand that your marital status as of the last day of the year determines your filing status.

Filing Status
Married Filing Jointly If you are married, you are able to file a joint return with your spouse. If your spouse died during the tax year, you are still able to file a joint return for that year. You may also choose to file separately under the status "Married Filing Separately".
Qualified Widow(er) Generally, you qualify for this status if your spouse died during the previous tax year (not the current tax year) and you and your spouse filed a joint tax return in the year immediately prior to their death. You are also required to have at least one dependent child or stepchild for whom you are the primary provider.
Single If you are divorced, legally separated or unmarried as of the last day of the year you should use this status.
Head of Household This is the status for unmarried individuals that pay for more than half of the cost to keep up a home. This home needs to be the main home for the income tax filer and at least one qualifying relative. You can also choose this status if you are married, but didn't live with your spouse at anytime during the last six months of the year. You also need to provide more than half of the cost to keep up your home and have at least one dependent child living with you.
Married Filing Separately If you are married, you have the choice to file separate returns. The filing status for this option is "Married Filing Separately".

For 2017, the standard deductions are: **STANDARDDEDUCTION_TAXYEAR_DEFINITION**

Dependents
A dependent is someone you support and for whom you can claim a dependency exemption. In 2017, each dependent you claim entitles you to receive a $4,050 reduction in your taxable income (see exemptions below). You may also receive a tax credit of up to $1,000 for each dependent child under the age of 17. The credit is, however, phased out for at higher incomes.
Exemptions claimed
Each exemption you claim reduces your taxable income by $4,050 for 2017. You receive an exemption for yourself, your spouse and one for each of your dependents.
Short-term capital gain or loss
This is the total capital gain you realized from the sale of assets held less than one year. Any amount you enter as a short-term capital gain is taxed as normal income.
Long-term capital gain or loss
This is the total capital gain you realized from the sale of assets held one year or longer. Any amount you enter as a long-term gain is taxed using the following rules:
  • 0% if your ordinary income marginal tax rate is 10% or 15%
  • 15% if your ordinary income marginal tax rate is greater than 15% and less than 39.6%
  • 20% if your ordinary income marginal tax rate is 39.6%
  • This calculator assumes that none of your long-term capital gains come from collectibles, section 1202 gains or un-recaptured 1250 gains. These types of capital gains are taxed at 28%, 28% and 25% respectively (unless your ordinary income tax bracket is a lower rate).
Business income or loss (Schedule C & E subject to self-employment taxes)
Any income or loss as reported on Schedule C. If you have any income reported on Schedule E that is subject to self-employment taxes, that income should be entered here as well.
Spouse business income or loss (Schedule C & E subject to self-employment taxes)
Any income or loss as reported on a spouse's Schedule C. If your spouse has any income reported on Schedule E that is subject to self-employment taxes, that income should be entered here as well.
Income from rentals, royalties, S Corporations and Schedule E (not included above and subject to NIIT)
This type of investment income is subject to the 3.8% Net Investment Income Tax (NIIT). Generally speaking this is income from any businesses that are passive activities to the taxpayer, and not reported elsewhere (for example, do not include income subject to self-employment taxes). This could include income from rental real estate, royalties, partnerships, S corporations, trusts, etc. There are exceptions and additional rules that can impact whether a particular business or investment income is subject to the NIIT. Please contact your tax professional for additional information.
Income from rentals, royalties, S Corporations and Schedule E (not included above and not subject to NIIT)
This is all income from any businesses that are NOT passive activities to the taxpayer, where the taxpayer materially participates, and not reported else where (for example, do not include income subject to self-employment taxes). This amount is not subject to the 3.8% Net Investment Income Tax (NIIT). This could include income from rental real estate, partnerships or S corporations where as long as the income is considered non-passive. There are exceptions and additional rules that can impact whether a particular business or other investment income is subject to the NIIT. Please contact your tax professional for additional information.
Total income
Total income calculated by adding lines 7 through 21 on your form 1040. For most taxpayers this includes wages, salaries, tips, interest, dividends and gains and losses from a variety of activities.
Adjusted gross income
Adjusted gross income (AGI) is calculated by subtracting all deductions from lines 23 through 33 from your total income. AGI is used to calculate many of the qualifying amounts if you itemized your deductions.
Taxable income
Your total taxable income is your AGI minus your itemized or standard deduction, and your deduction for exemptions.
Tax
This is the total federal income tax you owe for 2017 before any tax credits.
Total credits
Your total tax credits. This amount is subtracted from the total tax amount.
Total tax after credits
This is the total federal income tax you will need to pay in 2017.
Total other taxes
Any other taxes that you owe for 2017. This includes self-employment tax, alternative minimum tax, and household employment taxes.
Total tax
Grand total of your 2017 federal tax bill.
Total payments
Total of all tax payments made in 2017. This includes tax withheld from Forms W-2 and 1099, and estimated taxes paid, earned income credit and excess Social Security tax withheld.