
ISO AMT in 2026: Bargain Element, Form 6251 Line 2i, and the OBBBA Phase-Out Cliff
Under OBBBA, the 2026 AMT exemption phases out at $500K single / $1M joint with a 50-cent rate, doubling the stealth bracket on ISO exercises. Here is exactly how the bargain element flows into Form 6251 line 2i, when a same-year disqualifying disposition eliminates the AMT adjustment, and how to plan exercises to avoid a six-figure phantom-income tax bill.






