Income and Assets · Property, real and personal

Options — statutory, non-statutory, and traded

The hardest thing about an incentive stock option is that two tax systems disagree about the same day. For regular tax, IRC § 421(a) says nothing happens at exercise. For alternative minimum tax, § 56(b)(3) says § 421 does not apply, so the bargain element is an adjustment in the year of exercise. The shares then carry two different bases — and the difference does not resolve until they are sold, sometimes years later and in a different rate environment.

The rule

What a qualifying transfer does. Where a share is transferred to an individual on the exercise of an option meeting § 422(a) or § 423(a): no income results at the transfer; the employer gets no § 162 deduction at any time for that share; and nothing beyond the option price is treated as received by the corporation (IRC § 421(a)(1)–(3)).

Incentive stock options — the holding conditions. Section 421(a) applies only if no disposition is made within 2 years from the grant nor within 1 year after the share is transferred, and the individual was an employee of the granting corporation or a parent or subsidiary at all times from the grant until the day 3 months before exercise (IRC § 422(a)(1), (2)).

And the plan conditions. The option must be granted under a shareholder-approved plan naming the shares and eligible employees; granted within 10 years of the plan’s adoption or approval; not exercisable more than 10 years after grant; priced at not less than fair market value at grant; non-transferable except by will or descent, exercisable in life only by the holder; and granted to someone who does not then own more than 10 percent of the voting power (IRC § 422(b)(1)–(6)).

A ceiling on how much can be an ISO in one year. To the extent the aggregate fair market value of stock for which incentive stock options are exercisable for the first time in a calendar year, across all plans of the employer and its parents and subsidiaries, exceeds a statutory ceiling, those options are not incentive stock options (IRC § 422(d)(1)) — applied by taking options in the order granted (§ 422(d)(2)). Value is measured at grant, so a rising share price does not consume more of the limit; the figure is in the table below.

The AMT adjustment. Section 421 does not apply for alternative minimum tax purposes to the transfer of stock acquired on the exercise of an incentive stock option, and the adjusted basis of the stock so acquired is determined on the basis of that treatment (IRC § 56(b)(3)). The bargain element at exercise is therefore an AMT preference in the exercise year, and the stock’s AMT basis is its fair market value at exercise while its regular tax basis remains the option price.

A disqualifying disposition moves the income, not the amount. Where the transfer would qualify but for a failure of the holding periods, the increase in the individual’s income and the employer’s deduction are treated as arising in the taxable year of the disposition rather than the year of exercise, and no chapter 24 withholding is required on that increase (IRC § 421(b)).

Employee stock purchase plans — the same two holding periods. No disposition within 2 years after the grant nor within 1 year after the share is transferred, and employment from grant until 3 months before exercise (IRC § 423(a)(1), (2)).

And a different set of plan terms. The option price may not be less than 85 percent of fair market value at grant, or of value at exercise; where it is set against value at exercise the option period is limited to 5 years; and each employee’s rights to purchase stock, valued at grant, may not accrue faster than a fixed annual ceiling for each calendar year the option is outstanding (IRC § 423(b)(6), (7), (8)).

The discount is compensation even on a qualifying disposition. Where the option price was below full value at grant, a disposition meeting the holding periods — or death while holding the share — includes as compensation, not capital gain, the lesser of the excess of value at disposition over the price paid, or the excess of value at grant over the option price (IRC § 423(c)(1), (2)). The amount is added to basis, and no withholding is required on it.

Traded options take their character from the underlying. Gain or loss on the sale or exchange of an option to buy or sell property, or loss from failing to exercise it, is gain or loss from the sale of property having the same character as the underlying property has, or would have, in the taxpayer’s hands (IRC § 1234(a)(1)); an option that lapses is deemed sold on the day it expired (§ 1234(a)(2)).

The grantor is always short term. For the grantor of an option in stock, securities or commodities, gain or loss from a closing transaction, and gain on lapse, is treated as from the sale of a capital asset held not more than 1 year (IRC § 1234(b)(1)).

Reporting. A corporation transferring stock on the exercise of an incentive stock option, or recording a transfer of title to stock acquired under a § 423(c) option, must file a return and furnish a statement to the individual (IRC § 6039(a), (b)).

Current figures

How it works in practice

For an ISO, keep two basis records from the day of exercise. Regular tax basis is what was paid; AMT basis is fair market value at exercise. When the shares are eventually sold, the regular tax gain and the AMT gain differ by the original adjustment, and that difference is what releases the minimum tax credit built up in the exercise year. A client who exercises and holds without understanding this will meet a large AMT bill in a year with no cash proceeds, and the recovery of it is slow.

For an ESPP, the § 423(c) computation is the one that gets missed. Even on a fully qualifying disposition, the discount is ordinary compensation — the lesser of two spreads — and it is not on the Form W-2 for that year because no withholding is required. It has to be picked up from the § 6039 statement and added to basis, or the same amount is taxed twice.

For traded options, ask who the taxpayer is. A purchaser takes the character of the underlying, so an option over stock produces capital gain or loss and an expired option is a sale on the expiry date. A writer is short term on every closing transaction and on every lapse, whatever the period the position was open.

How this has changed

Section 422(b) acquired two closing sentences that make ISO status partly elective. An option is not an incentive stock option if its own terms provide that it will not be treated as one, or if an election is made under § 83(i) with respect to the stock received on its exercise. Either lets a grant that meets every statutory condition sit outside the regime deliberately.

The § 83(i) interaction is the newer of the two and matters because the election is made by the employee, after the fact. An employee who elects deferral under § 83(i) converts what was an ISO into a non-statutory option for tax purposes, losing § 421(a) and the AMT structure with it.

Section 423(b)(8)‘s accrual limit has never been indexed, and it is measured by value at grant for each calendar year the option is outstanding rather than by what is purchased. The practical ceiling on an ESPP has therefore fallen steadily in real terms, in the same way as the § 1211(b) capital loss allowance and the § 86 base amounts.

What has not moved is the ISO holding structure, and it remains the most misdescribed part of the topic: two years from grant and one year from transfer, and both must be satisfied. A sale eighteen months after exercise but only twenty-three months after grant is a disqualifying disposition, which surprises clients who count only from exercise.

Exam focus

Expect the two-year and one-year pair, with dates arranged so one is met and the other is not. Both are required by § 422(a)(1).

Expect the AMT adjustment as a question about the exercise year. There is no regular tax and there is an adjustment.

Expect the § 423(c) discount on a fully qualifying ESPP disposition, testing whether you know part of the gain is compensation.

Expect the grantor of an option, where the answer is short-term regardless of how long the position was open.

Check yourself

1. An ISO is granted in January 2024 and exercised in March 2026. What is the earliest disposition date that keeps the qualifying treatment?

Answer: March 2027 — one year after the transfer of the shares. The two-year period from grant expired in January 2026, so under IRC § 422(a)(1) the later of the two conditions controls.

2. What happens at exercise of an ISO for regular tax and for alternative minimum tax?

Answer: Nothing for regular tax, under IRC § 421(a)(1). For alternative minimum tax, § 56(b)(3) disapplies § 421, so the bargain element is an adjustment in the exercise year and the AMT basis of the stock becomes its value at exercise.

3. Options for stock worth 140,000 dollars at grant become exercisable for the first time in one calendar year. What is the consequence?

Answer: Options covering 40,000 dollars of that value are not incentive stock options, under IRC § 422(d)(1), applied by taking options in the order granted under § 422(d)(2).

4. An employee holds ESPP shares for three years, then sells at a large gain. Is all of it capital?

Answer: No. IRC § 423(c) includes as compensation the lesser of the excess of value at disposition over the price paid or the excess of value at grant over the option price, with the remainder capital gain and the compensation added to basis.

5. A taxpayer writes a call option that expires worthless after fourteen months. What is the character of the premium?

Answer: Short-term capital gain. IRC § 1234(b)(1) treats gain on the lapse of an option granted by the taxpayer as from the sale of a capital asset held not more than one year, regardless of the actual period.