ISO Qualifying vs. Disqualifying Dispositions
A clear breakdown of the two ISO holding periods and what changes when clients sell early.
Last updated: January 2026
The two holding period requirements
For an ISO sale to qualify for favorable long-term capital gains treatment, the client must satisfy BOTH holding periods.
| Requirement | Measured from | Minimum period |
|---|---|---|
| Holding period #1 | Exercise date | > 1 year |
| Holding period #2 | Grant date | > 2 years |
Many clients focus on “1 year after exercise” and forget the “2 years after grant” requirement. Missing either one triggers a disqualifying disposition.
Visual timeline (example)
| Date | Event | Notes |
|---|---|---|
| Jan 1, 2024 | Grant date | Options granted at $10 strike |
| Mar 15, 2025 | Exercise date | Client exercises at FMV $30 |
| Mar 16, 2026 | 1-year holding met | Post-exercise requirement |
| Jan 2, 2026 | 2-year holding met | Post-grant requirement |
| Mar 16, 2026+ | Qualifying sale window | Both requirements met |
Tax treatment comparison
| Qualifying disposition | Disqualifying disposition | |
|---|---|---|
| Ordinary income | $0 | Lesser of: (spread at exercise) OR (actual gain at sale) |
| Capital gain | All gain as LTCG | Any gain above FMV at exercise (STCG/LTCG depending on holding) |
| Reported on W-2 | No | Yes (ordinary income portion) |
| FICA | No | No (ISO DD income is not subject to FICA) |
| Employer deduction | No | Yes |
If the stock drops after exercise, the ordinary income portion in a disqualifying disposition is capped at actual gain. This is why a same-year DD can sometimes be a good outcome after a price decline.
Worked example
| Scenario | Qualifying | Disqualifying |
|---|---|---|
| Grant price | $10 | $10 |
| FMV at exercise | $30 | $30 |
| Sale price | $50 | $50 |
| Ordinary income | $0 | $20 (bargain element) |
| Capital gain | $40 (LTCG) | $20 (STCG or LTCG) |
In many real cases, qualifying disposition can reduce total tax by shifting gain from ordinary income to long-term capital gain rates.
When disqualifying dispositions can make sense
- Client needs immediate liquidity and cannot wait.
- Stock price declined significantly since exercise (DD can cap the ordinary income amount).
- AMT exposure is too high; DD in the same year can avoid AMT.
- Concentration risk is unacceptable; diversification wins.
- Client is leaving the company and options may expire before holding periods complete.
Track BOTH holding periods in your CRM for every ISO exercise. Calendar reminders 30 days before each milestone create proactive client touchpoints.