This post is at least ignorant.
The fact is that CPF LIFE annuity payouts received by U.S. persons are partially U.S. taxable. The tax computation for CPF LIFE is almost always based on the IRS's "General Rule," explained in
IRS Publication 939. (I don't see how the IRS's other tax computation rule would ever apply to CPF LIFE, but I'm using the words "almost always" just to be cautious.) Unfortunately, the U.S. tax computation is
amazingly complicated, but the bottom line is there's no escaping U.S. tax liabilities with any of the payout plans.
For somebody starting CPF LIFE payouts today, or soon, there
might be a tiny incentive in favor of the Standard or Basic Plan (and a minor argument against the Escalating Plan) given that today's U.S. income tax rates are comparatively low and future U.S. income tax rates are likely to be higher. In other words, if there's any U.S. derived "tax play," you've got the play backwards.