Inputs
Federal AMT exposure estimate
Enter assumptions and click Calculate to estimate possible federal AMT exposure under a simplified screening model.
Summary
Click Calculate to view the estimate.
Chart
Regular federal tax, estimated AMT, and exposure
Estimate details
Federal AMT exposure summary
Income and adjustments
AMT estimate
Assumptions
Tax year: 2026. Assumptions are simplified and should be verified before use.
This is a federal AMT exposure estimator only. It uses editable assumptions for selected AMT preference items, simplified capital-gains and LCGE adjustments, simplified treatment of deductions and credits, and a simple comparison between estimated regular federal tax and estimated federal AMT.
For capital gains, enter the full gain separately from the taxable capital gain already included in taxable income. The AMT adjustment uses the difference between the simplified AMT-included gain and the taxable capital gain already reflected in taxable income, which helps avoid double-counting the regular taxable portion.
Regular federal tax payable is estimated using simplified 2026 federal brackets from the centralized tax data layer before detailed credits, deductions, and other filing-specific adjustments.
Important limitations
This calculator does not reproduce Form T691. It does not calculate provincial AMT, trust or corporate AMT, detailed AMT carryforward balances, exact credit calculations, or all adjustment items. LCGE-related results are simplified and depend on eligibility and actual filing details. Actual AMT results may differ materially.
Common AMT triggers
Common triggers can include large capital gains, lifetime capital gains deduction claims, employee stock option deductions, donations of appreciated publicly listed securities, and large deductions or credits.
Interpretation guidance
Estimated AMT exposure does not necessarily represent permanent additional tax. AMT may create future minimum-tax carryforward balances depending on future tax circumstances.
Professional disclaimer
Professional review is strongly recommended for AMT situations. Educational information only. This tool is not financial, tax, legal, accounting, investment, retirement, estate, filing, or cross-border planning advice.