Hi experts, can I ask if we can apply for many credit cards(say 3/4, one from each bank) to take advantage of all the signup rewards then close all the credit cards a few month down the road?

Hi Anonymous, collecting all these signup rewards really does seem quite attractive. So you may take it as an experiment across the different banks while you hop around, to determine which bank(s) provide you with the most satisfied service. A note to always keep track of your expenses and pay these bills on time as the cards you have on hand multiply.

It seems most cooling period is also 12 months from the last time you had an existing relationship with the bank, for you to be considered a "new-to-bank" customers. One exception that I have heard of is that for Citibank - cancelling the Citibank Clear Student card does not have such a "cooling period". Not sure how true this is, or if anyone in the community could verify this.

Yes, you can. Just take note that you can only cancel the card after 6 months, and once cancelled, there is this "cooling" period (I think it's 1 year?) whereby if you sign another CC with that bank, you will still be considered as an existing customer. But do take note though, certain banks will still reject your application (probably later on down the road) if they see your record that you will do this. Haven't faced any of this yet personally.