AMT Calculator 2026

Calculate if you owe Alternative Minimum Tax and estimate your AMT liability.

AMT Calculator

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AMT Owed

$594.00

Additional tax due

Regular Tax

$35,000.00

AMT Calculation

$35,594.00

AMT Exemption

$88,100.00

Final Tax Due

$35,594.00

Tips
  • • AMT mainly affects taxpayers with income over $200,000
  • • Common AMT triggers: high state taxes, ISO stock options, large capital gains

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Understanding the Alternative Minimum Tax (AMT)

The Alternative Minimum Tax (AMT) is a parallel tax system designed to ensure that high-income taxpayers pay at least a minimum amount of tax, regardless of deductions and credits. The AMT was created in 1969 after it was revealed that some wealthy taxpayers were legally avoiding all federal income tax through extensive use of tax preferences and deductions.

What is the Alternative Minimum Tax?

The AMT works alongside the regular income tax system. When you file your taxes, you calculate your liability under both systems and pay the higher amount. The AMT eliminates many common tax breaks and applies a different set of rules to determine your taxable income, which is called Alternative Minimum Taxable Income (AMTI).

For 2026, the AMT exemption is $88,100 for single filers and $137,000 for married couples filing jointly. The AMT rate is 26% on the first $232,600 of AMTI above the exemption, and 28% on amounts above that threshold.

Common AMT Triggers

Several factors can trigger AMT liability:

  • High state and local taxes: Property taxes, state income taxes, and sales taxes are not deductible under AMT
  • ISO stock options: The bargain element from exercising incentive stock options is an AMT preference item
  • Large capital gains: Significant investment gains can push you into AMT territory
  • Private activity bonds: Interest from certain municipal bonds is tax-exempt under regular tax but taxable under AMT
  • Home equity loan interest: Not deductible under AMT unless used for home improvement

How to Calculate AMT

The AMT calculation starts with your regular taxable income and adds back various "preference items" and adjustments. These include state and local tax deductions, certain itemized deductions, and the spread on ISO exercises. After applying the AMT exemption, the remaining amount is taxed at either 26% or 28%.

💡 Pro Tip: AMT Planning

If you're close to the AMT threshold, consider timing your deductions strategically. Bunching deductions in alternate years or timing ISO exercises can help minimize AMT impact over multiple years.

Frequently Asked Questions About AMT

Taxpayers with income over $200,000, those who exercise incentive stock options, residents of high-tax states (CA, NY, NJ), and those with large itemized deductions are most likely to owe AMT.
You can't avoid AMT entirely if your income and deductions trigger it, but tax planning strategies like timing ISO exercises, managing state tax payments, and bunching deductions can help minimize its impact.
No, you pay either your regular tax or AMT, whichever is higher. AMT ensures high-income taxpayers pay a minimum level of tax.
For 2026, the AMT exemption is $88,100 for single filers and $137,000 for married couples filing jointly. The exemption phases out at higher income levels.