A:Maybe when our kid turns 21! Depending on your kids age and maturity, I would start getting money games like from "Consumer Reports" and "Dave Ramsey" they have games that teach kids in a fun way about money, credit and as Spider Man would say "With Great Power come Great Responciblity" I did this in order for my kids to come back to me and say "Hey Pop help me pay off my credit cards"
Good Luck