What Is FIFO in Inventory Management? Rules, Examples and Benefits

FIFO (First In, First Out) is an inventory issuance principle dictating that the oldest received batches of materials are issued to production or dispatch before newer consignments.

Step-by-Step Practical FIFO Issuance Example

Consider a warehouse stocking industrial epoxy resin:

  • Receipt 1 (October 1): 100 kg received at ₹400/kg (Batch A-101).
  • Receipt 2 (October 10): 150 kg received at ₹420/kg (Batch A-102).

On October 15, a production work order requisitions 120 kg of resin. Under strict FIFO rules, the warehouse issues:

  • 100 kg from Batch A-101 (exhausting the October 1 receipt completely).
  • 20 kg from Batch A-102 (drawn from the October 10 receipt).
  • Remaining closing stock = 130 kg of Batch A-102.

Core Operational Advantages of FIFO

  • Prevents Shelf-Life Expiry & Oxidation: Crucial for paints, coatings, sealants, and raw metals prone to atmospheric oxidation.
  • Guarantees Full Batch Traceability: When customer warranty claims occur, FIFO links the finished unit directly back to the specific raw material heat number.
  • Realistic Cost of Goods Sold (COGS): Prevents inventory valuation distortions caused by fluctuating commodity prices.
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