Many companies are considering changing their tax withholding practices after FASB modified the accounting rules for share-based awards (ASC 718). For most companies, the modified rules become mandatory for accounting periods starting after December 15, 2016, although companies are able to voluntarily implement the revised rules earlier.

The changes to ASC 718 were mainly intended to facilitate tax withholding for equity awards granted to employees outside the U.S., but have also raised questions for taxes withheld for U.S. executives.