VMI vs Consignment Inventory: Which Model Fits Your Network?

What VMI actually is

In a VMI model, the supplier actively manages stock at the buyer's location — monitoring consumption and forecasts and replenishing to agreed target levels. The defining feature is collaboration: the vendor takes responsibility for availability, which frees the buyer to focus on production and sales.

What consignment is

In consignment, the supplier owns the goods stored at the buyer's site, and ownership transfers only when the item is consumed or sold. It lowers the buyer's financial risk and on-balance-sheet inventory, but replenishment decisions typically stay with the buyer — there's less active management baked in.

The key differences

The two models differ on three axes that matter operationally and financially:

• Ownership: VMI ownership usually transfers on delivery or replenishment; consignment stays with the vendor until use.
• Who manages stock: VMI puts the vendor in charge of replenishment; consignment leaves it with the buyer.
• Best fit: VMI suits high-volume, lower-variety items with steady consumption; consignment suits low-volume, high-variety or expensive items.

How to choose

Start from your demand profile and goal. If your priority is guaranteed availability on fast-moving SKUs and you want a partner to own replenishment, VMI is the stronger fit. If your priority is protecting working capital on slow-moving or high-value parts, consignment may serve better. Many mature networks run both — VMI on the fast core, consignment on the long tail.