How long is my VIABUY Prepaid Mastercard valid? Aline C. 10 May 2022 11:33 Updated The new cards (since 2019) are valid for 5 years from the date of issuance (before 3 years). A new card will be sent to you in time before your VIABUY Prepaid Mastercard expires, as long as you have a balance on your account. Please do not forget to have your current address in our system. Related articles My card expires soon, how do I get a new one? What is the difference between the gold and the black card? Why is my money being held for 14 days? How can I change my address? Is it possible for a merchant to block an amount as a deposit on my card? Comments 0 comments Article is closed for comments.