Same thing happened to me today. Paid $3000 towards my credit card from a few cash jobs I did. Was asked for ID, phone number, and what I do for work? I've been a Citi card holder since 1990 and have paid off my balance when oportunities like this arrise. So what is the logic and reason behind this from the banks perspective? The concern here and I'm sure I'm not alone, will this generate some kind of red flag with the IRS? Or is this simply some new level of security for the bank, as they put it. Any help would be appreciated! Thanks.