Why does net income change with the FIFO?
FIFO (first in first out) is a method of account for inventory.
With FIFO, if inventory costs are increasing your cost of goods
sold will be lower than under the LIFO (last in first out) method.
If inventory costs are increasing, FIFO will result in higher net
income (lower COGS) than LIFO. If inventory costs are decreasing,
FIFO will result in lower net income (higher COGS) than LIFO.