Alternative Minimum Tax (AMT)

A separate tax calculation required for some construction companies to prevent excessive tax deductions.
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Alternative Minimum Tax (AMT) and Its Impact on Construction Businesses

The Alternative Minimum Tax (AMT) is a parallel tax system in the United States that applies to certain taxpayers, including businesses, to ensure they pay a minimum amount of tax, regardless of deductions and credits. While not exclusive to the construction industry, the AMT can have specific implications for construction businesses due to their unique financial characteristics and accounting methods. In this blog post, we will explore what the Alternative Minimum Tax is, its relevance to construction companies, and how businesses in the construction sector can navigate its impact.

Understanding Alternative Minimum Tax (AMT)

The Alternative Minimum Tax was introduced to prevent high-income taxpayers from exploiting loopholes and taking advantage of excessive tax deductions and credits. Under the AMT system, taxpayers calculate their liability using an alternative set of rules and rates, different from those of the regular tax system. They then pay the higher of the two tax amounts: the regular tax or the AMT.

AMT primarily affects taxpayers with significant deductions and credits, such as those related to high state and local taxes, large depreciation deductions, and certain tax-exempt interest income. While the AMT was not designed specifically for the construction industry, construction companies may find themselves impacted due to their revenue recognition practices and extensive use of tax credits and deductions.

AMT Impact on Construction Businesses

Construction businesses may encounter AMT-related challenges due to the following factors:

1. Long-Term Contracts

Construction projects often involve long-term contracts that span several years. Under the regular tax system, income from long-term contracts can be recognized using the percentage-of-completion method or completed-contract method. However, for AMT purposes, the percentage-of-completion method must be used, potentially affecting the timing of income recognition and tax liability.

2. Depreciation Deductions

Construction companies heavily rely on depreciation deductions for assets such as heavy machinery, equipment, and buildings. The depreciation methods used for regular tax purposes may not align with those required for AMT calculations, leading to differences in taxable income.

3. Tax Credits

Construction businesses may be eligible for various tax credits, such as the Investment Tax Credit (ITC) for renewable energy projects or the Work Opportunity Tax Credit (WOTC) for hiring disadvantaged workers. These tax credits can significantly impact regular tax liability, but some may be disallowed or limited under the AMT system.

Navigating the AMT Impact

To mitigate the impact of the Alternative Minimum Tax, construction businesses can take the following steps:

1. Tax Planning

Engage in strategic tax planning to understand the potential AMT implications of various financial decisions, such as project contract structures, depreciation methods, and credit utilization.

2. Seek Professional Advice

Consult with tax professionals who are well-versed in the construction industry and AMT regulations. They can provide valuable insights and guidance to optimize tax strategies.

3. Evaluate Project Structure

Consider the AMT impact when structuring long-term construction contracts. Choosing the right method for income recognition can affect the timing of taxable income and AMT liability.

4. Utilize Tax Credits Wisely

Be mindful of the tax credits used and the limitations imposed under the AMT system. Prioritize credits that are more beneficial for both regular tax and AMT purposes.


The Alternative Minimum Tax (AMT) is an additional tax system that can impact construction businesses, especially those with high deductions, credits, and long-term contracts. To navigate the AMT impact, construction companies should engage in thoughtful tax planning, seek professional advice, and evaluate project structures and tax credit utilization. By understanding the AMT's implications and implementing strategic tax strategies, construction businesses can optimize their tax liability and financial performance.


Common Questions

What is the Alternative Minimum Tax (AMT)?

The Alternative Minimum Tax (AMT) is a federal tax imposed on certain taxpayers to ensure that they pay at least a minimum amount of tax. It is calculated separately from the regular income tax and is generally higher than the regular income tax.

Who is subject to the Alternative Minimum Tax (AMT)?

Individuals, estates, and trusts may be subject to the Alternative Minimum Tax (AMT). Generally, taxpayers with higher incomes and certain tax preferences are more likely to be subject to the AMT.

What are the tax rates for the Alternative Minimum Tax (AMT)?

The tax rate for the Alternative Minimum Tax (AMT) is 26% for income up to $191,500 and 28% for income over $191,500. The AMT exemption amount for 2020 is $72,900 for single filers and $113,400 for married filing jointly.

What are some common tax preferences that can trigger the Alternative Minimum Tax (AMT)?

Common tax preferences that can trigger the Alternative Minimum Tax (AMT) include the exercise of incentive stock options, the deduction of state and local taxes, and the deduction of miscellaneous itemized deductions.

How can I calculate my Alternative Minimum Tax (AMT)?

You can calculate your Alternative Minimum Tax (AMT) by completing Form 6251. This form requires you to calculate your regular income tax and then add back certain tax preferences to determine your AMT liability.

What are the penalties for not paying the Alternative Minimum Tax (AMT)?

If you do not pay the Alternative Minimum Tax (AMT) when it is due, you may be subject to a penalty of up to 25% of the amount of the unpaid tax. In addition, you may be subject to interest on the unpaid tax.

Can I deduct the Alternative Minimum Tax (AMT) from my regular income tax?

No, you cannot deduct the Alternative Minimum Tax (AMT) from your regular income tax. The AMT is a separate tax and must be paid in addition to your regular income tax.

What is the Alternative Minimum Tax (AMT) credit?

The Alternative Minimum Tax (AMT) credit is a credit for taxpayers who paid the AMT in a prior year but are not subject to the AMT in the current year. The credit can be used to offset regular income tax liability in the current year.

What is the difference between the Alternative Minimum Tax (AMT) and the regular income tax?

What is the difference between the Alternative Minimum Tax (AMT) and the regular income tax?

What is the deadline for filing the Alternative Minimum Tax (AMT)?

The deadline for filing the Alternative Minimum Tax (AMT) is the same as the deadline for filing your regular income tax return. Generally, this is April 15th of the following year.
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