I'm pretty sure LIFO accounting is illegal in Australia and most of the world with the exception of the US... My business studies teacher mentioned this in class, saying that LIFO is manipulated by businesses to decrease their income tax and as a consequence, most countries use FIFO or a weighted average method of accounting stock.
For example say a business makes 1000 books for $1 each on Monday and another 1000 books for $2 each on Tuesday. The total cost of manufacture is $3000.
On Wednesday, they sell 1000 books for $3 each.
Using the LIFO approach, the books sold incur the cost of the last books manufactured, so that the cost recorded is $2000. The value of remaining stock is then valued at $1000.
The gross profit is then Sales ($3000) - COGS ($3000 - $1000) = $1000.
Using the FIFO approach, the books sold incur the cost of the first books manufactured, so that the cost recorded is $1000, and the value of remaining stock is valued at $2000.
The gross profit is then sales ($3000) – COGS ($3000 - $2000) = $2000.
Here, the LIFO approach allows for gross profit for a certain time period to be minimised to $1000, a good thing if a business is attempting to reduce income taxes.
I could be completely wrong but I'm pretty sure this is why LIFO isn't actually used in Australia. Worth mentioning to make sure people don't accidentally recommend using it for an Australian business in the case of a short answer or section III question involving accounting methods (very unlikely).