How long will it take to get my STACK card? Tania August 07, 2018 20:53 Follow It takes about 5-10 business days for you to get your STACK card in the mail. Related articles Oops. I misplaced my card - can you put a temporary block on it? How do I put money onto my STACK Card? Do I need a good credit score to sign-up for a STACK card? Can I get a card for my kid? How do I activate my card? Comments 0 comments Article is closed for comments.