Employee
Generally, the benefit upon purchase is subject to tax (the difference between the reduced purchase price and the market value).
Shares acquired before January 1, 2011: gains from the sale of shares held more than 12 months generally are not taxed. If the shares were held for less than 12 months, gains are taxed.
Gains from the sale of shares acquired on or after January 1, 2011, are subject to tax irrespective of the holding period.
Employer
Withholding & Reporting
Tax withholding and reporting, especially the proof of the holding period, are required.
Deduction
Reimbursement of the parent company for the cost of the benefit (ie, the discount at the time of purchase) pursuant to a written reimbursement agreement should enable the subsidiary to deduct such cost from its income taxes.
Tax-favored
Preferential tax treatment, in the form of a designated tax-exempt amount for the given benefit, may apply if certain requirements are met.