The Alternative Minimum Tax (AMT) is a separate tax calculation that is intended to prevent high-income taxpayers from not paying their fair share of taxes through an excess use of deductions and credits. Taxpayers with an AGI greater than the AMT exemption are required to calculate their income tax using both the standard income tax calculation and the AMT calculation and pay the higher amount.
The AMT is calculated by starting with the adjusted gross income (AGI) from form 1040, line 11b, then adding back certain deductions and adding some additional income. This amount is the AMT Income. Then, an AMT Exemption amount is determined based on the AMT Income. The AMT Income minus the AMT Exemption is taxed at 26% or 28%, which is the amount of the AMT.
To calculate the AMT using this tool, enter information from the federal tax return in the green fields. The amount of the AMT, if any, will be in the blue field at the bottom. Click this link for more help with this tool.
Tax Year
Filing Status
Taxpayer's Birthday
Taxpayer Is Blind
Spouse's Birthday
Spouse Is Blind
1040, line 11b
Adjusted Gross Income (AGI)
1040, line 3a
Qualified Dividends
1040, line 7a
Capital Gains
1040, line 15
Taxable Income
1040, line 16
Income Tax
1040 SA, line 17
Itemized Deduction
1040 SA, line 7
Taxes Paid Deduction
1040, line 13a
QBI Deduction
Tax Refunds (subtraction)
Investment Interest Expense
Depletion
Net Operating Loss
Alternate Net Operating Loss (subtraction)
Private Activity Bonds Interest
Qualified Small Business Stock
Incentive Stock Options
Estates and Trusts
Disposition of Property
Post 1986 Depreciation
Passive Activities
Loss Limitations
Circulation Costs
Long-term Contracts
Mining Costs
Reseach Costs
Installment Sales (subtraction)
Intangible Drilling Costs
Other Income
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AMT Exemption
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Alternative Minimum Tax (AMT)
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Select the tax year for which you would like to calculate the alternative minimum tax.
This is the filing status that was used on the federal tax return.
This is the taxpayer's birthday. This is used to determine the taxpayer's age at the end of the tax year, which in turn, is used to determine the standard deduction.
This is the spouse's birthday. If the taxpayer is not married, this field should be left blank. This is used to determine the spouse's age at the end of the tax year, which in turn, is used to determine the standard deduction.
Check this checkbox if the taxpayer is blind. This is used to determine the standard deduction.
Check this box if the spouse is blind. If the taxpayer is not married, this checkbox should be left unchecked. This is used to determine the standard deduction.
The adjusted gross income (AGI) is the income after adjustments on the federal tax return. It is on form 1040, line 11b.
It is on form 1040, line 3a.
It is on form 1040, line 7a.
It is on form 1040, line 15
It is on form 1040, line 16.
It is on form 1040 SA, line 17.
It is on form 1040 SA, line 7.
It is on form 1040, line 13a.
Include any refund from state and local taxes that is taxed on the federal return. This information is on form 1040 S1, line 1.
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Depletion is a deduction for the reduction in value of an asset as the asset is used up.
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If you exercised a stock option this year, this is the difference between what you paid for the stock options and their fair market value.
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This is amount of income used for the AMT calculation.
This is the AMT exemption that is subtracted from the AMT income.
This is the amount of the alternative mimimum tax.