accounting

FIFO

First In, First Out - an inventory valuation method assuming oldest items are sold first.

Under FIFO, COGS reflects the oldest inventory costs while ending inventory reflects the most recent purchases. During rising prices, FIFO results in lower COGS and higher profits but also higher tax liability. It is permitted under both GAAP and IFRS and is the natural flow for businesses selling perishable goods.

Example

A grocery store buys milk at $2.00/gallon in week one and $2.20 in week two—under FIFO, sales use the $2.00 cost first while remaining inventory is valued at $2.20.

Why It Matters for Your Business

Your inventory valuation method directly affects reported profits and taxes, and FIFO gives a more current balance sheet valuation important for lending decisions.

Practical Tips

  • Use FIFO for perishable inventory to align accounting with actual product flow.
  • Be aware that FIFO may increase your tax bill during inflationary periods due to lower COGS.

Related Terms

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