Employee Stock Purchase Plans: Discounts, Holding Periods, and Basis Reporting

Employee Stock Purchase Plans (ESPPs) offer a chance to buy company stock at a discount, often with a lookback feature that increases your effective discount. Understand the difference between qualifying and disqualifying dispositions, watch out for double taxation on your tax return, and decide when the tax benefits outweigh concentration risk.

How qualified ESPPs work. A qualified plan under Section 423 lets you purchase stock at a discount of up to 15% off the fair market value. Most plans use a "lookback" feature: the purchase price is the discount applied to the lower of the stock price at the beginning or end of the offering period. This means your effective discount can be much larger than 15% if the stock rose during the period.

The holding period that changes everything. If you hold the shares for at least two years after the offering date and one year after the purchase date, you get favorable "qualifying disposition" treatment. The discount portion (up to 15%) is taxed as ordinary income, but any remaining gain is a long-term capital gain. Sell before those dates and it becomes a "disqualifying disposition": the entire spread between your purchase price and the market value at purchase is ordinary income, regardless of what you actually sold for.

Why people get confused. ESPP tax reporting is notoriously messy. Brokerages often report incorrect cost basis on Form 1099-B because they don't account for the ordinary income portion already reported on your W-2. Filing without adjusting for this means you pay tax on the same income twice.

The pitfall: The ESPP discount feels like free money, and for many people it effectively is. But holding the shares after purchase to meet the qualifying disposition period means taking on stock concentration risk. A CPA helps you calculate whether the tax savings from holding justify the investment risk of not diversifying.