You will determine the cost basis by determining the "fair market value" your employer used to come up with the compensation reported on the W-2. For example, if you had 45 shares sold, you will calculate your cost basis as FMV per share x 45 shares. The cost basis is then subtracted from the sale to determine loss or gain.
@junzhu98
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
