It's very straightforward: The qualifying year in which LPs will credit is based on when AA posts the points for each statement. As to when Citi will post a charge and in what statement period, that's dependent on a variety of factors, such as when merchants close transactions. If anyone is so close to qualifying for a specific tier and relying on last minute purchases 2-3 days before the end of his/her February 2023 Citi statement close date, don't. Make a transaction sooner than that to eliminate the risk.