How can identical hammers have different accounting costs?
Imagine a hardware store buys a box of identical hammers for $10 each in January, and another box of the exact same hammers for $15 each in June. When a customer buys one hammer in July, what did that hammer cost the store? Periodic FIFO (first-in, first-out) and weighted-average accounting assign those costs differently between sales and remaining inventory, even when the hammers sit in the same bin.
Questions you could explore
- How do the two methods treat a low-price purchase followed by a high-price one?
- Why does the total purchase cost still have to be accounted for?
Start reading
- OpenStax, Rice University10.2 Calculate the Cost of Goods Sold and Ending Inventory Using the Periodic Method
OpenStax compares periodic FIFO and weighted-average cost assignment; its period-wide average is the relevant model here.
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