The distinction in one example
FIFO - first in, first out - draws stock in the order it arrived. FEFO - first expired, first out - draws in order of expiry date.
Those coincide only when deliveries always arrive in expiry order, which is not how supply chains behave. A delivery received today can easily carry a shorter remaining shelf life than one received last month, because it sat longer upstream or came from an older production run. Under FIFO the older delivery is consumed first and the newer, shorter-dated material sits behind it until it expires on your shelf.
When FIFO is the right answer
FIFO is simpler to operate and easier to verify visually, and for material without a meaningful expiry it is entirely adequate. Packaging, hardware, and stable chemicals rarely justify anything more sophisticated.
It also has a real advantage where age matters but expiry is not tracked: it prevents stock sitting indefinitely at the back of a rack, which is a genuine problem in its own right.
When FEFO earns its place
FEFO matters wherever material carries a date that makes it unusable. Food, beverage, supplements, cosmetics, and many chemical inputs all qualify.
The benefit is direct: material that would have expired behind newer stock gets used instead. The cost is that it requires expiry to be captured accurately at receiving, which is a discipline rather than a setting.
Why the policy needs enforcing, not just choosing
Most operations will tell you they run FEFO. Fewer can demonstrate it, because the policy lives in the picker's head rather than in the instruction they are given.
A policy that is not enforced at the point of picking degrades quietly. The stock nearest the door gets taken, the short-dated pallet at the back gets missed, and the write-off appears months later with no obvious cause.
The exceptions you will need
A rigid policy meets reality quickly, and a system that cannot express exceptions gets worked around - which is worse than not having the policy.
- Customer-specific minimum remaining shelf life, which can make the shortest-dated lot ineligible
- Quality holds, where the soonest-expiring lot is not released
- Allergen or customer segregation that constrains which lots may be used
- Partial containers already opened, which are often better finished than left
- Committed stock allocated to an order that has not yet shipped
What good looks like
The practical test is not which policy you have chosen. It is whether someone picking stock is told which lot to take, whether deviating from that is possible but visible, and whether short-dated stock surfaces early enough to be sold rather than written off.
Meet those three and the label on the policy matters much less than the discipline behind it.