CHAPTER 23Alternative Minimum Tax (AMT)
The purpose of AMT is to effectively take back some of the tax breaks allowed for regular tax purposes. The AMT is an additional tax that you may owe if for regular tax purposes you claimed:
- Itemized deductions for taxes or investment expenses.
- Certain tax-exempt interest, accelerated depreciation, and incentive stock option benefits.
There are no specific tests to determine whether or not you are liable for AMT. You must first figure your regular income tax and then see whether tax benefit items must be added back to taxable income to figure alternative minimum taxable income, on which the AMT is figured. If after claiming the AMT exemption and applying the AMT rates of 26% and 28% the tentative alternative minimum tax exceeds your regular income tax, the excess is your AMT liability, which is added to the regular tax on your return. In other words, your tax liability for the year will be the greater of your regular tax or your AMT.
AMT liability is figured on Form 6251 and is attached to Form 1040 or 1040-SR.
Table 23-1 Key to AMT Rules for 2021
| Item— | AMT Rule— |
|---|---|
| AMT exemptions and tax rates | The exemption shields an equivalent amount of alternative minimum taxable income (AMTI) from the AMT. For 2021, the AMT exemption amounts ... |
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