What Is FEFO, and Why It Beats FIFO for Relief Stock

Tony Miller

5 days ago

5 min read

FEFO, First Expired First Out, issues stock by which item is closest to expiry, not by arrival order. Relief consignments are pooled from many donors and manufacture dates, so FEFO is what stops usable stock becoming a write-off.

What is the difference between FEFO and FIFO?

FIFO issues whichever stock arrived at the warehouse first, in receipt order. FEFO issues whichever stock expires first, regardless of when it arrived. The Logistics Cluster's guidance on inventory management of medical items is explicit that products should be "rotated out of storage based on how close they are to expiration," not on how long they have sat on the shelf, per the Logistics Cluster's Logistics Operational Guide.

For simple, non-perishable NFIs the two rules usually give the same instruction, because older stock tends to be closer to its date too. Relief stock breaks that assumption. A pallet that has sat in the yard for a year can carry a later expiry date than a consignment that landed last month, if the two came from different production runs. Apply FIFO to that yard and the near-date stock stays at the back of the queue exactly when it should be at the front.

Why does donated and pooled relief stock need FEFO specifically?

Because arrival order tells you nothing about remaining shelf life. Response stock is routinely pooled from several donors and manufacturers, each batch carrying its own manufacture date, and it can sit in a hub before it ever reaches the field. During the 2024-2025 South Sudan cholera response SLS moved more than 52 million Aquatabs tablets through Juba, a treatment capacity exceeding 1 billion litres, delivered across multiple consignments and manufacture dates rather than as one uniform batch. That is the ordinary condition of relief stock, not the exception.

The clock is also shorter than people assume. NaDCC water-treatment tablets such as Aquatabs carry a five-year shelf life in strip packs and a three-year shelf life in tubs under tropical and temperate conditions, shortening further with exposure to heat or high humidity, per Medentech's own Aquatabs product FAQ. A strip-packed batch and a tub-packed batch received on the same day are not on the same clock. FIFO cannot see that difference; FEFO is built to.

How do you physically arrange a stack so FEFO is actually possible?

FEFO fails on paper before it fails in practice, when the stack will not allow it. The Logistics Cluster is direct about the failure mode: "practising FIFO/FEFO may be difficult if cargo in the middle of a large stack is inaccessible," per the Logistics Operational Guide's ground storage and stacking section. If picking the near-date pallet means unstacking three others first, staff will pick whatever is nearest to hand instead.

Three habits keep it workable. Mark the expiry date clearly on every unit, adding a sticker where it is not visible on the original packaging. Keep the same SKU with different expiry dates in separate, clearly demarcated stacks rather than mixed together. Load new arrivals behind or beneath existing stock, so the shortest-dated batch stays at the front of the pick face rather than buried under whatever arrived most recently, as set out in the same Logistics Cluster guidance.

What paperwork makes FEFO work: bin cards and the expiry register?

Three records need to agree. A stock card travels with the cargo itself, recording the item description, the dates and quantities received and released, and a running balance. A bin card is fixed to the bin or shelf and tracks movement of whatever is stored in that location. An inventory ledger holds the central, running record for the whole warehouse, including expiration dates and donor information, per the Logistics Cluster's warehousing documentation guidance. Expiration dates belong on all three, not just in the storekeeper's memory, and staff should be trained to issue the shortest-dated stock first rather than the oldest-arrived stock, per the same Logistics Cluster source. SLS applies this discipline across its warehousing service, where WASH consumables, spares and NFIs move through Juba under exactly this kind of mixed-date pooling.

What do you do with short-dated stock before it becomes a write-off?

Flag it early enough to act. Items with three to six months of shelf life remaining should be flagged for attention, and anything under three months should be escalated to the project or programme team immediately, per the Logistics Cluster's inventory management guidance. Routine physical counts should specifically emphasise short-shelf-life items rather than treat the whole inventory as one undifferentiated pass.

Once stock is flagged, the options repeat: redirect it to a site that will consume it within its remaining window, escalate it to programme staff for priority distribution ahead of newer stock, or accept it needs disposal action before it expires on the shelf. What FEFO prevents is the worst outcome, discovering a short-dated pallet during an unrelated cycle count, months after the window to use it productively has closed.

Frequently asked questions

What does FEFO stand for?

First Expired, First Out. Stock is issued according to which item is closest to its expiry date, per the Logistics Cluster's Logistics Operational Guide, rather than according to when it arrived in the warehouse.

Is FEFO the same thing as FIFO?

No. FIFO (First In, First Out) issues stock in receipt order. FEFO issues stock in expiry order. The two usually agree for non-perishable items but diverge for anything with a shelf life, including pooled or donated relief stock with mixed manufacture dates.

How long is the shelf life of a water-treatment tablet like Aquatabs?

Five years in strip packs and three years in tubs under tropical and temperate conditions, shortening further with heat or humidity exposure, per Medentech's Aquatabs product FAQ. That is why two batches received the same day can be on different clocks.

When should short-dated stock be flagged?

At three to six months from expiry as a routine flag, and immediately, to the project team, once remaining shelf life drops under three months, per the Logistics Cluster's inventory management guidance.

What is the difference between a bin card and a stock card?

A stock card travels with the physical cargo and records receipts, releases and a running balance. A bin card is fixed to the bin or shelf and tracks movement of whatever is stored in that specific location, per the Logistics Cluster's warehousing documentation guidance. Both should match the central inventory ledger.