Stock Option Advisor Match

Stock Options Exit Value Calculator

Pre-IPO employee? Recent hire with options you're trying to size up? This calculator answers the question most option holders actually want answered: if my company exits at $X per share, how much do I walk away with after taxes? Enter your grant details, pick an exit scenario, and see the after-tax math — including the gap between exercising and selling immediately versus holding for a qualifying ISO disposition.

The difference between paths can be enormous. On a $1M ISO spread, the qualifying-disposition (long-term capital gains) path can save $150,000–$250,000 in federal tax versus a same-day sale. The calculator shows both so you can make that tradeoff with real numbers.

ISO vs. NQSO treatment at exit: NQSOs create W-2 ordinary income at exercise — the spread is always taxed at your marginal rate (22–37%), plus FICA. ISOs exercised and held for qualifying-disposition periods (2 years from grant, 1 year from exercise) receive long-term capital gains treatment at exit — typically 15–20% federal, no FICA. This calculator models both paths. For pre-IPO ISOs, you'd typically exercise early (see the 83(b) calculator), then let the clock run through IPO lockup.

How to read these results

Why "walk-away value" differs so much from grant value

Grant value — shares × current price — tells you the paper worth of your options. Walk-away value is what reaches your bank account after the exercise cost and all taxes. For a California tech employee in a high bracket, the all-in tax rate on an NQSO exercise can exceed 50% (37% federal + 13.3% state + FICA). Knowing the after-tax number before you negotiate or decide to exercise is the point of this calculator.

Qualifying vs. disqualifying dispositions for ISOs

The tax difference between paths is the central planning question for ISO holders. On a $1M ISO spread:

That's a $169,000 difference on a $1M spread — from holding long enough. The tradeoff: concentration risk during the holding period and potential AMT at exercise. A specialist advisor models this across years, not just at one exit price.

Why the scenario table matters

Pre-IPO employees often anchor to one "expected" exit price. The scenario table forces a realistic spread: what do you net if the company exits at 3× 409A vs. 10× 409A? For early employees with low strike prices, even a modest exit produces significant after-tax proceeds. For late-stage hires with high strikes at rich 409A valuations, the break-even exit price may be higher than they realize once taxes are modeled.

Related tools and guides

Model your real numbers with a specialist

The calculator gives directionally correct estimates. Your actual walk-away value depends on multi-year AMT credit recovery, 10b5-1 plan timing, lot sequencing, QSBS eligibility, and state-specific traps this tool can't fully capture. A fee-only specialist who handles equity comp daily will find angles a one-time model misses.

Sources

  1. IRS Rev. Proc. 2025-32 — 2026 federal income tax brackets, LTCG thresholds, AMT exemptions, and standard deductions used in this calculator.
  2. SSA — Contribution and Benefit Base. 2026 Social Security wage base: $184,500.
  3. IRS Topic No. 427 — Stock Options. ISO qualifying vs. disqualifying disposition rules; NQSO ordinary income treatment at exercise.
  4. Tax Foundation — 2026 federal income tax brackets and capital gains rates. Cross-reference for IRS Rev. Proc. 2025-32 values.
  5. IRS Topic No. 409 — Capital Gains and Losses. Net investment income tax (NIIT) 3.8% threshold: $200K single / $250K MFJ (IRC § 1411, not inflation-adjusted).

State rates are approximate marginal rates for high-income earners as of 2026. California rises to 13.3% above $1M; New Jersey top rate 10.9% above $1M. For California, ISO spreads are taxed as ordinary income at both exercise and sale — the "qualifying" path still avoids FICA but does not receive preferential CA LTCG treatment. Federal tax values verified June 2026 against IRS Rev. Proc. 2025-32.