Stock Option Exercise Tax Calculator
Calculate tax impact of exercising NSO or ISO stock options.
Option Details
Strike Price:$ 50.00
Current FMV:$ 100.00
Spread:$ 50.00
Shares:1000
Total Spread:$ 50000
Exercise Cost:$ 50000
NSO Taxation
Compensation Income:$ 50000
Tax at Exercise:$ 12000
Capital Gains:$ 20000
Capital Gains Tax:$ 4800
NSO: spread taxed as ordinary income at exercise. Later sale: capital gain on appreciation.
Sale Proceeds
Sale Proceeds:$ 120000
Exercise Total Cost:$ 62000
Total Tax:$ 16800
Net Proceeds:$ 41200
ISO Holding Requirements
Exercise + 2 years from grant + 1 year from exercise
Qualifying disposition: hold shares at least 2 years from grant AND 1 year from exercise.
Stock Option Tips
- NSO: taxed at exercise, simpler tax treatment
- ISO: AMT risk, but LTCG on qualifying sale
- ISO AMT credit: can offset future regular tax
- Exercise early: lower spread, lower AMT risk
- Sell same day: disqualifying disposition for ISO
- 83(b) election: for restricted stock, not options