No, it will remain verified even if it expires. But if you remove it then it will get unverified. - Mr.President -
I guess... your account will remain verified but only till Paypal is unaware of the same! Regards, RightMan
If you try to chanrge something against that unverified card, your paypal account will become unverified.
If your cc get expire then the problem only comes when you buy something online and you want to do it through cc or incase of some dispute and you have withdrawn funds and other person raised dispute then paypal hold payment through cc and if your card get expire then it can be problem, so you can get problem only when you buying online through cc or in case of dispute, so simply use your paypal balance.