Voluntary Swiss OASI/IV scheme
If you no longer live in Switzerland, are no longer subject to the compulsory Swiss Old-Age and Survivors Insurance scheme (OASI) and the Swiss Invalidity Insurance scheme (IV), and you live in a country that is not a member of the European Union (EU) or the European Free Trade Association (EFTA), you can maintain your insurance cover in Switzerland by paying into the voluntary OASI/IV scheme, provided that you meet the membership requirements (OASIA, SR 831.10/InvIA, SR831.20/VOASIO, SR 831.111).
Federal Act on Old-Age and Survivors Insurance (OASIA, SR 831.10) (de, fr, it)
Federal Act on Invalidity Insurance (InvIA, SR 831.20) (de, fr, it)
Federal Ordinance on Voluntary Old-Age, Survivors and Invalidity Insurance (VOASIO, SR. 831.11) (de, fr, it)