not sure how soon or late you are checking it, but your tip will not show up the first day or probably even the day after you do the charge. When the charge is still pending, processing, on hold (whatever terminology you want to use), the tip isnt there yet. the tip will not show up until the charge posts, which means that they submitted the charge. there are 2 steps for the restaurant to process the charge, first they get an authorization (thats the amount without the tip included), this just puts a hold on the funds on your account. After that, they have to submit the charge so that they actually collect the money, this happens after they got your signed receipt with the tip. Most places submit the charge the following business day, but sometimes it takes a couple days. Also, in most systems, if they dont submit that charge after three days, the hold disappears off of your account, but they can still submit the charge so if that ever happens, dont assume you got a free meal, it will come back on your account.