| To me it sounds like a tax structured in a strange way so it doesn't obviously read as a tax. It's essentially a forced loan to the government at subpar rates. The "tax" is the delta between what the government pays out for the bonds vs what a bond of equivalent risk in the free market would have paid. The magnitude of the investment also probably makes it impractical for anyone but the very wealthy to retire before that starts paying out. Most other countries have lower rates on their retirement schemes, which makes it feasible for more people to live on their savings for a few years before the government retirement scheme kicks in. E.g. in the US it's pretty feasible for the upper middle/lower upper classes to retire a few years before Social Security kicks in, especially if they're willing to live frugally. |
But these funds aren't pooled like taxes. Typically the top 25% pay something like 80% of the income taxes. And the recipient of that tax revenue is typically the bottom 50% who get means-tested welfare benefits. In the Singaporean model it seems that the CPF funds of 37% are not pooled but allocated to personal accounts.
In other words it's a redistribution in-time (from early to late) and in-type (general income to housing/healthcare/retirement expenses), but to the same person.
Whereas a tax is typically a redistribution in the same time period, but to different persons, and can be earmarked to whatever.
I'd certainly prefer a 37% tax earmarked to me only (with modest ROI) + 10% income taxes + 0% cap gains, than the 40% tax I pay (west-europe) on my income which is wholly redistributed to others + 36% cap gains if I invest the remainder.