The Alternative Minimum Tax (AMT) is a federal tax system designed to ensure that certain taxpayers with higher incomes pay at least a minimum amount of federal income tax. While most taxpayers calculate their federal tax using the standard tax rules, some individuals may need to calculate their liability under both the regular tax system and the AMT system.

Understanding the Alternative Minimum Tax can help you make better financial decisions and avoid unexpected tax liabilities. At AIM Financial, we help individuals and business owners navigate complex tax situations with personalized tax preparation and planning.

What Is the Alternative Minimum Tax?

The Alternative Minimum Tax is a separate federal tax calculation that limits the benefit of certain deductions, exclusions, and tax preferences. The IRS explains that the AMT can apply to taxpayers whose income or deductions receive favorable treatment under the regular tax system.

Instead of simply calculating your regular taxable income, the AMT system requires certain adjustments to determine your Alternative Minimum Taxable Income (AMTI). You then subtract an applicable AMT exemption and calculate the tentative minimum tax. If the AMT calculation produces a higher tax than your regular tax liability, you may owe the difference.

Who May Be Subject to AMT?

The AMT does not apply to everyone. However, taxpayers with certain income levels, deductions, investments, or financial circumstances may be more likely to encounter it.

Situations that can potentially affect an AMT calculation include:

• Higher levels of income
• Certain itemized deductions
• Significant capital gains
• Incentive stock options
• Certain business or investment deductions
• Specific tax credits and adjustments
• Certain types of depreciation or other tax preferences

Because the rules can be complicated, simply looking at your taxable income isn’t always enough to determine whether you may owe AMT.

2026 Alternative Minimum Tax Exemption

For tax year 2026, the AMT exemption is $90,100 for unmarried individuals and $140,200 for married couples filing jointly or qualifying surviving spouses. The exemption begins to phase out at $500,000 for unmarried individuals and $1 million for married couples filing jointly.

These figures are important, but they shouldn’t be treated as a simple income cutoff. Your complete tax situation determines whether the AMT applies.

How Is AMT Calculated?

The IRS uses Form 6251, Alternative Minimum Tax—Individuals, to calculate AMT. The form starts with information from your regular tax return and applies specific adjustments and preferences to determine your AMT liability.

Some deductions that reduce your regular taxable income may receive different treatment under the AMT rules. This means that a taxpayer who appears to have a relatively low regular tax liability could still have an AMT obligation.

The good news is that paying AMT in one year doesn’t necessarily mean you’ll pay it every year. Depending on your circumstances, you may also qualify for a minimum tax credit in a future year. The IRS provides rules for claiming a prior-year minimum tax credit using Form 8801.

Why Tax Planning Matters

The Alternative Minimum Tax is one reason why year-round tax planning can be valuable. Major financial decisions—such as exercising incentive stock options, selling investments, purchasing business assets, or recognizing additional income—can have consequences beyond your regular tax calculation.

At AIM Financial, our tax professionals emphasize personalized service, detailed return preparation, prior-year return reviews, and year-end tax planning. AIM Financial also provides tax preparation services to individuals and businesses throughout Michigan and beyond.

Rather than waiting until tax season to discover an unexpected liability, proactive planning can give you a clearer picture of your potential tax obligations.

Talk to AIM Financial About Your Tax Situation

The Alternative Minimum Tax can be complicated, but you don’t have to navigate it alone. Understanding how AMT rules interact with your income, deductions, investments, and financial decisions can help you plan with greater confidence.

If you believe you may be affected by AMT—or simply want a professional review of your tax situation—AIM Financial can help you understand your options and prepare for tax season.

For personalized tax preparation and planning, contact AIM Financial at (616) 855-3300 or visit AIM Financial’s tax services page.

Tax laws and thresholds can change. This article is for general informational purposes and is not a substitute for individualized tax advice.