<prompt> Human: My wife and I have been married for about 2 years now and over time have joined finances completely. The last step is credit cards. We have developed good financial habits and want to begin putting all of our monthly purchases on a credit card and paying it off in full each month to reap the CC rewards.This may be a dumb question but do you sign up for credit cards together? Or does a CC go under one persons name and the other is just an authorized user. Ive been looking at the Citi Double Cash but as I started the application I didnt see a place to add her information.Any help or suggestions would be appreciated. We both have personal credit cards from before our marriage with no balance. Our hope was to have a joint credit card to maximize the rewards.  <response>: We did both, actually, specifically for rewards. Went like this: CSP card: 50k sign on bonus, 5k referral United Card: 30k sign on bonus, 5k referral We both signed up for both cards and added each other as authorized users. 180,000 United miles later and we had a few free flights to use. 