8dd8e1b3_O_Accounting___AccountingTools__LIFO_Method
[Issue] Financial reporting [FIFO Method] There are no GAAP or IFRS restrictions on the use of FIFO in reporting financial results. [LIFO Method] 
IFRS does not all the use of the LIFO method at all. The IRS allows the use of LIFO, but if you use it for any subsidiary, you must also use it for all parts of the reporting entity.
FIFO vs LIFO Accounting - AccountingTools
LIFO Method