OBBB 2025 & Equity Compensation: What Changed for Stock Options & RSUs

Executive Summary

Federal tax legislation often moves several parts of the code at once. For employees with material equity income, the interaction of ordinary rates, AMT, capital gains, NIIT, and state tax dominates outcomes. The One Big Beautiful Bill framework (2025) is best understood as resetting or modifying several TCJA-era parameters—not as a single “switch” that simplifies equity taxation.

Pair with: AMT planning, QSBS guide, year-end planning.

Themes That Matter for Equity (Conceptual Map)

ISOs and AMT (Planning Lens)

ISO exercises add the bargain element to AMTI unless you sell in a disqualifying disposition the same year. Exemption and phaseout determine how painful that is.

Action: Before large exercises, run ISO AMT impact and review Form 8801 credit recovery.

QSBS (Section 1202)

OBBB-era changes to Section 1202 affect which issuers and how much gain can be excluded. The interaction of:

• Holding period (often 5 years for full exclusion in many cases),
• Gross assets tests,
• Per-issuer caps,

…means two employees at the “same” startup can have different outcomes.

Use QSBS calculator for intuition only.

RSUs and Withholding

Federal reform can shift marginal brackets; RSU income is often withheld at supplemental rates that may not match your true bracket—see RSU withholding.

Checklist for “Law Changed—What Do I Do?”

• Ask your CPA: effective dates for provisions you rely on
• Update projections for ISO exercise, QSBS sale, and AMT credit
• Check state conformity for your residence and work states
• Re-read plan documents—employer policies may lag legislation

Disclaimer

Educational only. Tax law changes are subject to guidance, corrections, and individual facts. Nothing here is tax advice.

Primary sources