Some prepaid debit cards can be problematic because it’s nearly impossible to use it up to the last cent. That means you end up with some odd amount on the card that no one will accept for payment unless by some miracle your purchase is equal to or less than that odd amount.
According to our friends at NerdWallet, some prepaid debit cards—not the funds but the cards themselves—have expiration dates, which is difficult to understand, but true nonetheless.
Most stores will not allow you to “split payments.” That means if you buy a new bike and want to use up that last $1.77 on a prepaid debit card (paying the balance with cash or some other form of payment), most stores will not let you do it. The problem is when the salesperson tries to process the prepaid card, it returns a rejection because the balance on the card is insufficient to cover the entire transaction.