Obsolete inventory

Obsolete inventory is stock that has lost its full commercial value — it can't be sold at the original price (or sometimes at any price). It's a step beyond dead stock, which is slow-moving; obsolete stock has effectively no remaining demand at the original price point.

The distinction matters for accounting (obsolete usually triggers a larger write-down) and for operations (the response is markdown or disposal, not just patience).

What makes inventory obsolete

Common triggers:

• Discontinuation. SKU is being phased out. Remaining stock has no future commercial role.
• Replacement. A successor SKU has launched. The old version still works but customers won't buy it.
• Expiry. Beauty, food, supplements, batteries — past the use-by, can't legally be sold.
• Seasonal end-of-life. A Christmas SKU sitting in February. Some stock will move next December; the rest is dead capital for 10 months.
• Range rationalisation. Brand decides to drop a colourway, size, or sub-category. Existing stock is now stranded.
• Damage. Returned, dropped, water-damaged. Physically present but not saleable as new.
• Compliance change. Regulation change makes the product non-compliant in key markets. E.g. ingredient bans.

Obsolete vs dead vs slow-moving

A spectrum:

The boundaries are fuzzy. A SKU declared dead can become obsolete if no markdown plan is acted on. Operationally the categories drive different responses:

• Slow-moving → review pricing and merchandising
• Dead → markdown, bundle, or repurpose
• Obsolete → markdown to clear, dispose, or write off

How obsolete inventory is accounted for

Obsolete stock has to be written down to its Net Realisable Value (NRV) under both IFRS and US GAAP. NRV for obsolete stock is often:

• Steep markdown selling price (sometimes 10–30% of original)
• Liquidation channel value (jobbers, off-price retailers)
• Charitable donation value (often near zero on books, plus tax considerations)
• Scrap or disposal value (frequently zero or negative once disposal cost is included)

The write-down is recognised in the period the obsolescence is identified, not when the stock is finally disposed of. Waiting until disposal hides the loss in a future period.

The cost of obsolete inventory

Direct cost is the write-down. The total cost is bigger:

• Working capital. Cash trapped in unsellable stock can't fund new ranges, marketing, or growth.
• Storage. Obsolete stock takes warehouse space someone is paying for.
• Operational drag. Picking around it, counting it, scheduling its disposal.
• Margin signal distortion. Forced markdowns to clear obsolete stock pull down category margin and confuse the merchandising signal.
• Brand impact. Heavy markdown of a current product signals to customers that the brand discounts everything eventually — which conditions them to wait.

A common rule of thumb: total cost of obsolete inventory is roughly 2–3× the book write-down once all the carrying costs are included.

Where obsolete inventory comes from

Root causes, in order of frequency:

• Forecast over-shoot on launches. New SKU launches over-bought, residual stock becomes obsolete after 12–18 months.
• Weak end-of-life planning. SKU being discontinued without a clear sell-down plan; remaining stock just becomes obsolete.
• MOQ-driven over-purchase. Supplier MOQ exceeded what could realistically sell through; the gap accumulates.
• Range expansion without rationalisation. New SKUs added without retiring underperformers; the catalogue grows complex and pieces fall off.
• Lifecycle ignored. Categories with short commercial lifespans (fashion, tech, regulated products) treated as if they have indefinite lives.

The structural fix is at the buying decision, not the disposal decision. Brands that produce less obsolete stock typically commit to less inventory in the first place — favouring smaller initial buys with reorders for proven sell-through over larger initial commitments to fill MOQs.

Reducing obsolete inventory

The levers, roughly cheapest first:

• Tighter SKU rationalisation discipline. Drop slow-movers before they become obsolete.
• Active markdown management. Mark down at week 8 of slow sell-through, not week 24. The earlier markdown costs less margin and clears more stock.
• Smaller initial buys + reorder discipline. Lower MOQ commitments, more frequent reorders. Cash-flow constrained but obsolescence-friendly.
• Outlet and liquidation channels. A planned outlet channel converts obsolete stock to revenue, even at low margins.
• Bundle and accessory. Pair obsolete stock with current bestsellers to move it through.
• Donation or destruction. When recovery isn't possible. Sometimes the right answer.