flan wrote:Amex was pretty clear when I talked to them about this issue that they bill by the transaction date. So if your closing date is the 18th, and they authorize a charge at 11:59 pm, they'll wait to generate the statement until the transaction posts, or the auth expires..
No, they won't do that. I can generate an auth that does not expire for 90 days or more. They are not going to wait that long. They go by the capture date.
Seriously though, I don't understand why you are worried about this. And even if it impacts you, I have a hard time believing AMEX is doing anything nefarious unless you make a case for why it benefits them. I think you are experiencing variations caused by processing delays. If this somehow benefited them because they are living on float or something then you could totally turn the tables by waiting until 1 day after statement date to make big transactions. Heck, I do that all the time.
Unless you can come up with a clear reason why this would even matter to AMEX, I am with the group that thinks you are just being delusional!