Art. 4a Federal Act of 13 October 1965 on Withholding Tax (WTA)
Art. 4a LIA
A corporation or cooperative society that acquires its own participation rights (shares, limited liability company shares, cooperative shares, cooperative bank participation certificates, participation or jouissance certificates) pursuant to a decision to reduce its capital or with the intention to do so is liable for withholding tax on the difference between the acquisition price and the nominal paid-up value of these rights. The same applies when the acquisition exceeds the scope of Art. 659 or Art. 783 of the Swiss Code of Obligations (CO).
Paragraph 1 applies by analogy to a corporation or cooperative society that has acquired its own participation rights according to Arts. 659 or 783 CO and does not subsequently reduce its capital nor resell these rights within a period of six years.
If the corporation or cooperative society acquires its own participation rights within the scope of commitments arising from a convertible or option loan or an employee participation plan, the resale period set in para. 2 is suspended until the extinction of these commitments, but not longer than six years for employee participation plans.
Corporations and cooperative societies that are listed on a Swiss stock exchange must, upon acquiring their own participation rights according to paras. 1 to 3, charge at least half of the liquidation surplus to the reserves from contributions, agios, and additional payments (reserves from capital contributions). If this condition is not met, the amount of reserves from capital contributions is adjusted accordingly, but not exceeding the available reserves from capital contributions.