How long does it take to sign up for an account? Tania August 07, 2018 20:50 Follow Most of our members sign up in about 2-5 minutes. Related articles What is your partnership with Mastercard? Do you have Interac e-transfers? Can I sign up if I'm an international student enrolled in college/university? Do I need a good credit score to sign-up for a STACK card? Who can apply for STACK? Comments 0 comments Article is closed for comments.