Tax
Employee Stock Purchase Plan (ESPP)
A program letting employees buy company stock at a discount, typically 10–15%, often with a lookback that uses the lower of the offering-date or purchase-date price. One of the most reliable equity-comp wins available at public companies for eligible employees.
ESPPs typically offer a 10–15% discount on company stock, often with a lookback that uses the lower of the offering-date or purchase-date price.
Tax treatment depends on holding period. Qualifying disposition (held 1 year past purchase AND 2 years past grant): the discount is ordinary income; the rest is long-term capital gain. Disqualifying disposition: the entire discount at purchase is ordinary income.
The ESPP arithmetic is what makes it worthwhile even for cash-flow-constrained employees. A 15% discount with a 6-month lookback and a flat share price yields a guaranteed ~17.6% pre-tax return on the deferred payroll ($100 payroll → $85 basis → $100 share value). In a rising-market period the return compounds via the lookback provision: a share that opened the offering at $50 and purchased at $70 costs $42.50, a 65% pre-tax return on the deferred cash. The math almost always beats leaving the same dollars in a high-yield savings account.
The IRS $25,000 annual limit ($25k of stock value based on the offering-date price) caps the payroll contribution — most plans auto-enforce this by returning excess contributions. For high earners, the entire $25k cap should be filled unless there's a specific reason not to.
Selling immediately after purchase locks in the discount as ordinary income (a disqualifying disposition) but eliminates the market-risk exposure. Holding to qualify for LTCG treatment converts the appreciation above the discount to capital-gain rates but exposes the employee to a stock drop. The math almost always favors immediate sale for the discount + lookback portion — the additional tax savings from holding for LTCG rarely justifies the concentrated single-stock risk.
Common pitfalls
- 1099-B forms typically show only the basis you paid, leading to double taxation if you don't adjust for the ordinary income piece
- Forgetting that ESPP discount is W-2 income reportable to the employer
- Missing the $25k annual limit calculation — some plans compute it differently and the leftover isn't always refunded
- Holding purchased shares for years to qualify for LTCG without a concentration-risk plan; a single-stock 50%+ portfolio position is materially more risky than most owners realise
- Skipping ESPP because 'I can't spare the payroll' — the 15% discount alone is a guaranteed return that beats every risk-adjusted alternative
Related service
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