(Update 8/30/21: IsabelleTravels notes that some NYT subscriptions bill every 4 weeks instead of every month, so be careful not to get hit with too many charges within a calendar month.)
Multiple Reddit members report that Audible runs the monthly subscription charge a few minutes before midnight of when the next month begins. Thus, the monthly charge for a membership that renews of the first of each month will actually charge a few minutes before the beginning of the next month. (Apparently the digital credit goes with the swipe/charge time, not the posting time.) If you already maxed out your prior month, you won’t get any AmEx credit to offset the charge.
If they do this consistently it probably won’t matter since you’ll always have your Audible paid up with the prior month’s credit. But it’s probably worth just avoiding having a 1st-of-month renewal date for Audible. Or for any of the other subscriptions too, for that matter.
Reports are that, upon request, Audible is amenable to crediting back the charge and recharging you again. That should work to get the missing credit.
Reader Gavin adds a similar experience with a NYT subscription whereby the renewal ended up being charged within the same month as the initial charge. Always worth giving some days leeway.
Reader CtownBin had the opposite experience with Peacock whereby an end of month subscription didn’t charge until beginning of the next month and ate into the following month’s allotment.
(Here’s our Amazon/Audible affiliate link for those signing up to a new Audible subscription.)
Source: doctorofcredit.com