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The Daily Insight

What deductions are not allowed under AMT?

Author

Mia Ramsey

Published Mar 22, 2026

Line 2a: Standard deduction or deductible taxes from Schedule A: In calculating the AMT, you cannot take itemized deductions for state and local income tax, real estate taxes and personal property taxes, even though these are deductible on your regular return.

Can Schedule C be negative income?

When you deduct all expenses itemized in Part II of your Schedule C from all income listed in Part I of your Schedule C, you arrive at your net profit or loss for the year. Enter this number on line 12 of your 1040 return. If your sole proprietorship lost money, this entry will appear as a negative number.

Will I have to pay AMT?

The AMT is an alternative set of rules for calculating your federal income tax. The rules determine the minimum amount of tax your income requires you to pay. If you’re already paying at least that much because of the regular income tax, you don’t have to pay AMT.

Are there any changes to itemized deductions due to Amt?

The TCJA also made changes to itemized deductions, such as reducing the deduction for the taxes you paid and removing the deduction for various miscellaneous expenses. Combined, these changes should result in the vast majority of households not having to be concerned with the AMT affecting them.

What to do if you are close to AMT threshold?

If you’re close to the AMT thresholds, you can use IRS Form 6251 to see if you’re at risk. You can also run your own projections using tax preparation software or hire a tax professional to calculate it for you.

How to calculate your AMT exemption for 2019?

Then, subtract your AMT exemption (if eligible), which for the 2019 tax year is $71,700 for individuals or $111,700 for married couples filing jointly. Finally, compute the AMT on what’s left, compare that amount with what you would owe under the regular system, and pay the higher of the two.

What are the most likely situations for AMT?

These are some of the most likely situations: Having a high household income If your household income is over the phase-out thresholds ($1,036,800for married filing jointly and $518,400 for everyone else) and you have a significant amount of itemized deductions, the AMT could still affect you.