A quick check on whether you might owe the Alternative Minimum Tax.
Open the AMT Screener tool →The Alternative Minimum Tax is a parallel tax system: you figure your tax a second way, with fewer deductions, and pay the higher of the two. Most people never owe it, but it can catch high earners with large state-and-local-tax deductions or incentive-stock-option exercises.
This is a screener, not the full Form 6251. We estimate your AMT income (your regular taxable income plus the big add-backs you enter), subtract the AMT exemption for your filing status (which itself phases out at high income), and apply the 26%/28% AMT rates to get a tentative minimum tax. You owe AMT only to the extent that tentative tax exceeds your regular tax. We compute your regular tax from the federal brackets and compare. If the screen flags you, complete Form 6251. Figures are the 2026 amounts from IRS Rev. Proc. 2025-32.
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