ISO Qualifying Disposition Holding Period Calculator

ISO qualifying disposition requires BOTH holding periods met: 2 years from grant date AND 1 year from exercise date. Enter your dates to see the earliest qualifying sale date and the tax savings vs selling early.

Grant Date

Exercise Date

Number of Shares

Strike Price ($)

FMV at Exercise ($)

Expected Sale Price ($)

Federal Marginal Bracket %

State Tax Rate %

Earliest Qualifying Date

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Tax Savings

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Qualifying Net

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2-Year From Grant Mark	—
1-Year From Exercise Mark	—
Earliest Qualifying Sale Date	—
Qualifying Tax (LTCG 20% + NIIT + State)	—
Disqualifying Tax (Ordinary)	—
Tax Savings Holding Until Qual Date	—
Net Proceeds (Qualifying)	—
Net Proceeds (Disqualifying)	—

ISO qualifying disposition requires both holding periods met: 2 years from grant date AND 1 year from exercise date. Both clocks must run — the later of the two governs. Meeting qualifying treatment converts what would be ordinary W-2 income (the bargain element) into long-term capital gain — saving 10-20 percentage points of effective tax rate.

The Dual Holding Period Rule

IRC Section 422 requires that to receive qualifying ISO treatment, you must NOT dispose of the shares (a) within 2 years of the grant date or (b) within 1 year of the exercise date. The 'or' is critical — both periods must elapse. If you exercised 6 months after grant, you need to wait 18 more months from exercise (2 years from grant) to qualify. If you exercised 3 years after grant, the 1-year-from-exercise rule binds.

Why the Holding Period Matters in 2027

Qualifying disposition taxes the entire spread (sale price minus strike) at long-term capital gains: 20% top federal + 3.8% NIIT + state. Top federal: 23.8% + state. Disqualifying disposition taxes the bargain element as ordinary income — top federal 37% + state + FICA exposure on disqualifying disposition is debated but generally not assessed. The difference: roughly 12-15 percentage points of effective rate.

Edge Cases and Special Rules

Death: heirs receive shares at FMV-at-death basis, and holding period is reset — qualifying treatment is preserved. Gift to spouse: original holding period continues. Gift to non-spouse: triggers disqualifying disposition. Charitable contribution: full FMV deduction if held 1+ year from exercise, no recognition of gain — best ISO tax outcome possible.

Last updated May 2026. Sources: IRS Form 3921, IRC Section 422 — Qualifying ISOs