AMT Calculator

AMT Calculator for ISO Exercise Planning

Estimate AMT from ISO exercises, find where AMT starts to bind, and project AMT credit recovery under explicit assumptions.

AMT planning is sensitive to spreads, filing status, and future income assumptions. This tool models those interactions explicitly.

This page covers the AMT estimation workflow, exercise optimization, and credit recovery projections.

What the tool covers

  • Current-year AMT estimate from ISO exercises.
  • Exercise optimization up to the AMT threshold.
  • Recovery of AMT credits in later years.

Why this matters

ISO exercises can look tax-efficient until AMT enters the picture. The value of the tool is the explicit modeling of when AMT starts to bind given your inputs.

Inputs worth double-checking

  • Fair market value versus strike price.
  • Share count and total grant availability.
  • Whether the scenario uses 2025 or 2026 tax-law assumptions.

Best follow-on read

Use Compensation Planner when AMT is only one part of a broader equity-comp planning question involving grants, exercise timing, and cash needs.

FAQ

Does this tool apply to NSOs the same way it applies to ISOs?

No. NSOs are taxed differently. The AMT-specific workflow is primarily about ISO exercise decisions and AMT credit behavior.

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