Inventory Shrinkage

What Is Inventory Shrinkage?

Inventory shrinkage, often just called shrink, is the gap between recorded inventory and actual inventory when the actual count comes up short. It is measured in units or as a percentage of inventory value.

Shrinkage is not only about theft. Many cases come from simple process errors that cause the records to drift from reality.

How It Works

Shrinkage is usually discovered during cycle counts, physical inventories or reconciliation. When the count is lower than the system, the difference is recorded as shrink and investigated.

Common causes include:

• Receiving errors, where fewer units arrived than were recorded.
• Damage during handling or storage that is not recorded.
• Mis-picks and wrong items shipped.
• Returns that are not inspected or restocked correctly.
• Theft or loss.

Why It Matters for Ecommerce Brands

Shrinkage directly reduces margin, because you paid for inventory you can no longer sell. It also causes customer-facing problems. If the system shows stock that is not really there, orders get accepted and then cannot ship.

Reducing shrinkage starts with accurate processes: scanning at receiving, putaway and picking, careful handling, prompt processing of returns and regular cycle counts. When a variance appears, finding the cause matters more than simply adjusting the number. For example, if a brand keeps finding fewer units of a small, high-value serum than expected, it may trace the gap to receiving counts that never matched the supplier's paperwork.

It also helps to track shrinkage by SKU and by cause over time. A steady pattern points to a process gap that can be fixed, while a one-time gap may be a single receiving or handling mistake. Either way, the records should be corrected with a note so reconciliation stays clear.