Finance

Alternative Minimum Tax (AMT) Calculator

Estimate whether you're subject to AMT and how much additional tax you may owe.

AMT Preference / Adjustment Items

AMT Calculation:
AMTI = Taxable Income + Preference Items + Adjustments
AMT Base = AMTI − AMT Exemption
Tentative Min Tax = 26% on first $232,600 + 28% above
AMT Owed = max(0, Tentative Min Tax − Regular Tax)

What is the AMT?

The Alternative Minimum Tax is a parallel tax system that ensures high-income taxpayers pay at least a minimum amount of tax, even if they have large deductions. You pay the higher of your regular tax or the AMT.

2024 AMT Exemptions

StatusExemptionPhase-out Starts
Single$85,700$609,350
Married Filing Jointly$133,300$1,218,700

Common AMT Triggers

  • Large state/local tax deductions (SALT)
  • Incentive Stock Option (ISO) exercises
  • Tax-exempt interest from private activity bonds
  • Accelerated depreciation differences