DIRECT ANSWER
What to know first
An ISO disposition generally fails the statutory holding-period requirement when the stock is sold before the end of the later of one year after the shares were transferred or two years after the option was granted. If the sale produces a gain, ordinary income generally applies up to the exercise-date spread, with any remaining gain treated as capital gain. If the sale produces a loss, IRS Publication 525 generally describes capital-loss treatment without ordinary income. Employer wage reporting, Form 1099-B basis, and any prior-year AMT adjustment must be reconciled separately.
Test the grant, exercise, transfer, and sale dates
Use Form 3921, the option agreement, exercise confirmation, and brokerage trade record to identify the grant, exercise, share-transfer, and sale dates. A qualifying ISO disposition generally requires both more than one year after transfer and more than two years after grant.
A sale before either requirement is satisfied is generally a disqualifying disposition. The holding period begins with the share transfer after exercise, not with the grant date alone.
Separate ordinary income from capital gain or loss
Publication 525 describes how a gain on a disqualifying disposition can create ordinary income tied to the exercise spread, with additional gain treated under the capital-gain rules. When the sale price is below the exercise-date value, the ordinary-income amount can be limited by the actual gain. A loss transaction generally does not create ordinary income under that framework.
The employer or former employer generally reports the compensation component in Form W-2 box 1. If expected wage reporting is missing or appears incorrect, reconcile it before filing and use the current Form 1040 instructions rather than omitting income.
Reconcile Form 1099-B and Form 8949
Regular-tax basis generally includes the exercise cost plus compensation included in income. A broker-reported basis may omit the wage component, which can overstate gain if Form 8949 is not adjusted.
Tie Form W-2, Form 3921, the exercise confirmation, the sale record, and Form 1099-B together. The objective is to report the wage and capital components once each without leaving out income or counting it twice.
Refigure the AMT side of the sale
An ISO exercise in an earlier year can create a different AMT basis. Current Form 6251 instructions address disposition adjustments, including a later disqualifying disposition of ISO stock.
Review the exercise-year Form 6251, all Forms 8801, and the regular and AMT basis schedules. The sale can affect current-year AMT and use of a minimum-tax-credit carryforward, but it does not guarantee that the full credit will be used in the sale year.
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AUTHOR
Stefano Tavella, CPA
Stefano Tavella, CPA leads Tavella CPA Group, a cloud-based CPA firm serving individuals and small businesses with tax preparation, planning, notice assistance, and related services.
PRIMARY GUIDANCE