FIFO vs FEFO: How to Apply Them in a Warehouse
Picture a few pallets pushed to the back of a rack in a food distributor's warehouse. Each new delivery was placed in front, and the older stock was forgotten behind it. By the time anyone noticed, the products were past their expiry date and had to be destroyed. The same story plays out with cosmetics, chemicals, pharmaceuticals, and even industrial materials with a shelf life, such as adhesives and coatings. FIFO and FEFO are the dispatch rules designed to prevent exactly this kind of loss.
What Is FIFO?
FIFO, or first in, first out, means the stock that entered the warehouse first is shipped first. Products are rotated by receipt date, so the oldest stock is always used before newer stock. It is widely used for general stock rotation and for products without a fixed expiry date that can still age, become obsolete, or suffer packaging wear.
What Is FEFO?
FEFO, or first expired, first out, sets the picking order by expiry date rather than receipt date. Different batches of the same product can be produced at different times and carry different expiry dates, and a batch that arrived later may expire sooner than one that arrived earlier. FEFO makes sure the right batch is shipped in that situation.
The Difference Between FIFO and FEFO
- Sorting rule: FIFO uses the receipt date; FEFO uses the expiry date.
- Where it fits: FIFO suits general stock rotation; FEFO suits products with a shelf life.
- Data needed: FIFO needs receipt dates; FEFO requires the expiry date of every batch or lot to be recorded.
- Outcome: for shelf-life products, FIFO can leave a batch with an earlier expiry date sitting in stock; FEFO removes that risk.
One important distinction: FIFO in this context refers to the physical flow of goods. FIFO as an inventory valuation method in accounting determines how cost is calculated and can be chosen independently of the physical flow. The two should not be confused.
How to Apply FIFO and FEFO in the Warehouse
- Capture lot and expiry at receiving: record the lot number and expiry date of every pallet or carton when goods arrive. Without this data, FEFO is impossible.
- Design racking for flow: use flow racks loaded from the back and picked from the front where possible, or always place new stock behind older stock.
- Label locations clearly: show lot and expiry dates on rack and pallet labels.
- Let the system direct picking: pick lists should specify the location and lot to pick, so staff take the right pallet rather than the nearest one.
- Monitor approaching expiry: run regular reports on stock nearing its expiry date and decide early on promotions, returns, or transfers.
- Define customer rules: some customers require a minimum remaining shelf life, and the system should check this at dispatch.
Common Problems
FIFO and FEFO look simple on paper but break down on the floor for predictable reasons. Pickers take the most accessible pallet to save time. Lot and expiry data is missed or entered incorrectly at receiving. Different lots of the same item are mixed in one location. Returns and part pallets are not linked to the correct lot. The common solution is to make the rule depend on the system and on barcode scanning rather than on individual attention.
Making It Reliable with Barcodes and Lot Tracking
A warehouse management system automates FIFO and FEFO: lot and expiry data are scanned at receiving, picking tasks are directed to the correct lot, the handheld warns when the wrong pallet is scanned, and stock approaching expiry is reported automatically. Lot tracking also means that in a quality issue or recall, you can find which batch went to which customer within minutes.
Frequently Asked Questions
What does FIFO mean?
FIFO stands for first in, first out. Stock that entered the warehouse first is shipped first, which keeps inventory rotating.
What does FEFO mean?
FEFO stands for first expired, first out. The picking order is based on expiry dates, which makes it the right rule for products with a shelf life.
Which products need FEFO?
Any product with an expiry date, including food, beverages, cosmetics, pharmaceuticals, chemicals, and industrial materials such as adhesives and coatings.
Is warehouse FIFO the same as FIFO in accounting?
No. Warehouse FIFO describes the physical order in which goods are shipped. Accounting FIFO is an inventory valuation method that determines how cost of goods sold is calculated.
Do I need lot tracking for FEFO?
Yes. FEFO requires the expiry date of each batch or lot to be recorded at receiving and tracked in stock at lot level.
How can FIFO and FEFO be enforced?
The most reliable approach is system-directed picking with barcode confirmation, so the handheld warns staff if they scan the wrong lot or location.
Conclusion
FIFO keeps general stock rotating, while FEFO ensures shelf-life products leave the warehouse in the right order. Both only work in practice when lot and expiry data are captured at receiving, racking supports the flow, and picking is confirmed by scanning. We build warehouse management systems for food, chemicals, packaging, and wholesale businesses that automate lot and expiry tracking and integrate with their existing ERP.