Employee Stock Purchase Plans (ESPPs)

An Employee Stock Purchase Plan (ESPP) is a tax-advantaged program governed by IRC §423 that allows employees to purchase company stock at a discount using after-tax payroll deductions. Deductions accumulate over an offering period (typically 6 months) and are used to purchase shares at a discount of up to 15% of the FMV. Many plans feature a lookback provision (a rule that bases the purchase discount on the lower of the stock price at the start of the offering period or the purchase date). Statute caps participation: under IRC §423(b)(8) each employee may purchase at most $25,000 of stock per calendar year, valued at the offering-date price — the binding constraint whenever the stock fell during the offering, or whenever your salary is high enough that the plan’s payroll-percentage cap is not (at a 15% deduction cap, above roughly $141,700).

The tax treatment of ESPP shares is determined by the holding period.

Qualifying Disposition. To qualify for preferential tax treatment, you must hold the shares for at least two years from the start of the offering period and one year from the purchase date. Upon sale, IRC §423(c) taxes as ordinary income the lesser of two amounts:

1.
the FMV at the start of the offering period minus the option price as determined at that date (for a 15% plan, exactly 15% of the offering-start price), or
2.
the actual gain — sale price minus what you paid.

Whatever remains is long-term capital gain. That “lesser of” is not a technicality, and the common shorthand — “the discount is ordinary income” — gets it wrong in the two cases that matter. If the stock fell during the offering period, a lookback plan buys you in at 85% of the lower purchase-date price, so your actual discount off the offering-start price is far larger than 15% — and yet the ordinary-income measure is still capped at 15% of the offering-start price, with everything above it taxed as capital gain. And if you eventually sell for less than you paid, limb (2) binds: the ordinary income is limited to your actual gain, which is zero, and you report a capital loss instead of phantom compensation.

Disqualifying Disposition. If the shares are sold before meeting both holding periods, the sale is a disqualifying disposition. The difference between the FMV on the purchase date and the purchase price is taxed as ordinary income in the year of sale, regardless of the sale price. Any subsequent gain or loss is treated as capital gains. If the stock price declines below the purchase-date FMV before sale, the taxpayer must still report the full purchase-date spread as ordinary income, while claiming a capital loss on the sale.

Run the numbers on holding, then sell on the purchase date. Offering price $100, purchase-date price $120, lookback buys at 85% of $100, so $85. Sell the same day at $120: a disqualifying disposition, $35 of ordinary income, $12.95 of federal tax at 37%, $22.05 kept — a 26% gain on $85 in six months. Hold a year and a day and sell at the same $120: a qualifying disposition, ordinary income capped at 15% of the offering price ($15), the remaining $20 long-term gain at 23.8%, total tax $10.31. The hold saved $2.64 a share — 2.2% of the position — in exchange for twelve months of single-stock risk you would never buy on purpose, and the state tax is identical either way. And when the stock fell during the offering, the qualifying route can cost more: offering $100, purchase $50, buy at $42.50, sell at $120 after a long hold, and the qualifying ordinary income is $15 against a disqualifying $7.50. Fund the plan to its cap and sell on the purchase date; the discount is the return, not the holding period (section “ESPP, Form 3922”).