Why did the item's unit cost change?

Steps

1. With weighted average costing, after every stock movement the unit cost becomes the stock value ÷ the quantity on hand - goods received, customer returns, imports released, production, adjustments.
2. The change is in the item's audit trail with the document that caused it.

Good to know

• Nothing on hand: the last cost stays. Changes of a cent or less are ignored. FIFO follows the layers on hand; standard cost stays the standard.