Form 3922
An IRS information return filed by employers when employees acquire stock through an Employee Stock Purchase Plan, reporting key transaction details needed for tax calculations.
What Is Form 3922?
Form 3922 (Transfer of Stock Acquired Through an Employee Stock Purchase Plan Under Section 423(c)) is an IRS information return that your employer must file whenever you purchase stock through a qualified Employee Stock Purchase Plan. Like Form 3921 for ISOs, Form 3922 reports the essential details of the transaction: the grant date (start of the offering period), the purchase date, the FMV on each date, and the price you paid. You need this information to correctly calculate your tax liability when you sell the shares.
Your employer sends copies to both the IRS and to you, typically by January 31 of the year following the purchase year.
How Form 3922 Works
What Is Reported
The form contains these key data points:
- Box 1: Date option (offering) was granted — The first day of the ESPP offering period
- Box 2: Date option was exercised (stock purchased) — The purchase date
- Box 3: FMV per share on the grant date — Stock price at the start of the offering period
- Box 4: FMV per share on the purchase date — Stock price on the day shares were purchased
- Box 5: Exercise price per share — The discounted price you paid (typically 85% of the lower of Box 3 or Box 4)
- Box 6: Number of shares transferred — How many shares you purchased
- Box 7: Date legal title was transferred — Usually the same as Box 2
Why the Grant Date and Purchase Date Both Matter
For ESPP tax calculations, you need both dates to determine whether a sale is a qualifying or disqualifying disposition. A qualifying disposition requires holding the shares for at least two years from the grant date (Box 1) and one year from the purchase date (Box 2). The grant date FMV (Box 3) is used to calculate the ordinary income component in a qualifying disposition.
Practical Implications for Startup Employees
Keep Every Form 3922
If you participate in an ESPP with semi-annual purchase periods, you will receive a Form 3922 for each purchase. Over several years, you may accumulate many forms. Keep all of them — when you sell ESPP shares, you need the specific Form 3922 from the purchase date of the shares you are selling to calculate the correct tax treatment.
Qualifying vs. Disqualifying Disposition Calculation
For a qualifying disposition, the ordinary income recognized is the lesser of: (a) the actual gain on the sale, or (b) the discount as of the grant date (Box 3 minus Box 5, multiplied by Box 6 at the time of grant). Any remaining gain is long-term capital gain.
For a disqualifying disposition, the ordinary income is the difference between the FMV on the purchase date (Box 4) and the price you paid (Box 5), multiplied by the number of shares sold. Any additional gain or loss is short-term or long-term capital gain depending on holding period.
Cost Basis Complications
ESPP cost basis reporting by brokers is often incorrect. Many brokers report the exercise price (what you paid) as the cost basis without adjusting for the ordinary income component. This can lead to double taxation if you are not careful — you pay ordinary income tax on the discount and then appear to have a larger capital gain than you actually do. Use Form 3922 data to verify and adjust the cost basis reported on your brokerage statement.
How It Relates to Exercising Stock Options
While ESPP purchases are technically not stock option exercises, the tax reporting framework is similar. Both ISO exercises (Form 3921) and ESPP purchases (Form 3922) use IRS information returns to report the transaction details needed for tax calculations. Understanding Form 3922 helps you manage the tax implications of your ESPP alongside your stock option strategy, ensuring that you track holding periods, calculate cost basis correctly, and make informed decisions about when to sell ESPP shares.