Alternative Minimum Tax (AMT) Calculator
Estimate tentative minimum tax and additional AMT due based on AMTI and filing status.
Configure your scenario
Enter AMTI, filing status, and regular tax to estimate AMT exposure.
$350,000
$12,990
$90,100
Detailed estimate
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AMT - quick answers
What is AMTI?+
AMTI is Alternative Minimum Taxable Income after AMT-specific adjustments and preference items.
Why does AMT due show zero?+
If tentative minimum tax is lower than regular tax, no additional AMT is owed.
Official references
Sources & Act Reference
AMT calculation references
Exemption phaseout
AMT exemption reduces as AMTI increases above filing-status thresholds.
Tentative minimum tax
AMT taxable base is taxed with 26% and 28% band structure.
Rule Trace
Applied rule and official references
Applied rule: tentative minimum tax minus regular tax equals additional AMT due
Official quick links
Compliance checklist
For filing accuracy, compute AMTI using full preference-item rules and Form 6251 schedules.
Smart Insight
Estimated additional AMT due is $12,990.
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