Direct comparison
Consignment Inventory vs. VMI
Consignment: the vendor owns stock on your shelf until it's used. VMI: you own it on delivery -- the vendor just controls reorder timing.
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How do Consignment Inventory, Vendor-Managed Inventory (VMI) compare side by side?
The table below compares Consignment Inventory, Vendor-Managed Inventory (VMI) across 10 procurement-relevant dimensions, from what it actually governs through can the two be combined?.
Side-by-side comparison
| Dimension | Consignment Inventory | Vendor-Managed Inventory (VMI) |
|---|---|---|
| What it actually governs | Who owns the stock and when title transfers. | Who decides when and how much to reorder. |
| Who owns the stock on the shelf | The vendor -- until a unit is used, sold, or otherwise triggers billing. | The facility -- from the moment of delivery, same as any purchase. |
| When title transfers | At use/sale/billing trigger, not at delivery -- stock can sit on the shelf for months still owned by the vendor. | At delivery, exactly like an ordinary purchase order. |
| When the facility is billed | Only for units actually consumed, typically on a periodic reconciliation cycle. | At or shortly after delivery, per standard invoice terms -- regardless of how fast the stock is used. |
| Who decides reorder timing/quantity | Not defined by consignment itself -- can be buyer-initiated or vendor-initiated independently. | The vendor, against par levels the two parties agreed to in advance. |
| Worked example: a 50-unit, $20/unit ($1,000) shipment | Vendor ships and stores all 50 units on your shelf; no invoice yet. You pull 12 units in month one -> billed $240 that month. The remaining 38 units stay on the vendor's books as unbilled stock physically on your shelf. | Vendor decides to ship the 50-unit replenishment based on your par level. Title transfers on delivery -> you're invoiced the full $1,000 on receipt (e.g. net-30), whether you use 5 units or 45 that month. |
| Where it sits on the facility's books | Off the facility's inventory asset account entirely while unbilled -- it's the vendor's balance-sheet asset until consumption triggers the sale. | On the facility's inventory asset account from the date of receipt, same as any purchased stock. |
| Typical items | High-cost, low-turnover items -- orthopedic/cardiac implants, specialty devices. | High-volume, predictable consumables -- gauze, IV sets, common reagents, pipette tips. |
| Risk if stock goes unused or expires | The vendor's risk -- unused or expired unbilled stock is written off against the vendor's inventory. | The facility's risk -- once delivered and titled, an overstock or expiry is the facility's carrying cost. |
| Can the two be combined? | Yes -- an item can be consigned AND vendor-managed at once (common for implants). | Yes -- same combination, from the other side of the same arrangement. |
Common questions
Common questions about Consignment Inventory vs Vendor-Managed Inventory (VMI)
Is vendor-managed inventory the same as consignment inventory?
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No. VMI is about who decides when to reorder; consignment is about who owns the stock and when you're billed for it. An item can be one, the other, both, or neither.
Who owns consigned inventory while it sits on the shelf?
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The vendor. Title doesn't transfer to the facility until the item is used, sold, or otherwise triggers billing -- the stock remains the vendor's balance-sheet asset until then, even though it's physically on the facility's premises.
Does VMI delay when a facility pays for stock?
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No. Under VMI the facility still takes title at delivery and is invoiced on the vendor's standard terms; VMI only changes who decides when to ship the replenishment, not when payment is due.
Can an item be both consigned and vendor-managed?
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Yes -- this is common for high-cost implants: the vendor decides when to restock the shelf (VMI) and also retains ownership of that stock until a unit is used (consignment). The two arrangements are independent and frequently paired.
