Unfortunately there is content on the internet that may be misleading.  So much so that it is hard for US exposed taxpayers to know what to trust.  As one of the few tax firms with "boots on the ground" in Singapore, we feel confident in our ability to deal with those exposed to the tax rules of both Singapore and the US.

Our position is that Singapore's CPF is taxable by the US for US exposed persons.  Please see the screen shots below in support of our position. 

We start with a 1989 memo and continue with a 1997 memo.  Be careful when dealing with unqualified professionals with no experience in or with Singapore...