Cost Flow Assumption Examples - Periodic vs Perpetual Inventory Sales Units Basic Data Date Description 3/2 Beginning Inventory 3/15 Purchase 3/19 Sale 3/30 Purchase Units 2,000 6,000 Purchases Unit Cost 4.00 4.40 Total Cost 8,000.00 26,400.00 Units Balance 2,000 8,000 4,000 6,000 4,000 2,000 4.75 9,500.00 $ 43,900.00 Cost Goods Avail for Sale Units Avail. For Sale Units Sold Ending Inventory 10,000 4,000 6,000 FIFO Periodic Date Description End Inventory Balance (FIFO) Units Unit Cost Cost Cost of Goods Sold Units Cost/Unit Sold CGS FIFO Perpetual Date Description End Inventory Balance (FIFO) Units Unit Cost Cost Cost of Goods Sold Units Cost/Unit Sold CGS LIFO Periodic Date Description Inventory Balance (LIFO) Units Unit Cost Cost Cost of Goods Sold Units Cost/Unit CGS LIFO Perpetual Date Description End Inventory Balance (FIFO) Units Unit Cost Cost of Goods Sold Units Cost/Unit Cost Sold CGS Cost of Goods Sold Units Cost/Unit CGS Average Cost (Periodic) Date Description Inventory Balance (Wt Avg) Units Unit Cost Cost Cost of Goods Sold Units Cost/Unit CGS Mvg Average (Perpetual) Date Description Inventory Balance (Wt Avg) Units Unit Cost Cost