Hi PlantHead,
Unfortunately I don't know much more about it. All I do know is that it can add an extra 1500 CHF to your monthly pay packet. It appears that you are eligible if you are an expatriate and if you also own foreign property? It may also relate to self employed people, but I'm not sure.
I have just found the following links:
http://www.englishforum.ch/finance-b...ce-expats.html
and
http://www.steueramt.zh.ch/html/engl...atriates_e.htm
I'll post back once I have had a chance to read through them.
Charday