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