Two Approaches to Counting Inventory
When you conduct an inventory audit, you have a fundamental choice: do you show your counters the expected quantities (open count), or do you hide them (blind count)? This seemingly simple decision has a major impact on accuracy, speed, and the insights you gain.
What Is an Open Count?
In an open count, the counter sees the expected quantity from the POS system next to each item. They count the physical stock and confirm or adjust the number.
Pros:
- Faster -- counters know roughly what to expect
- Easier for inexperienced counters
- Good for routine cycle counts where you expect accuracy
Cons:
- Confirmation bias: The biggest problem. When a counter sees "Expected: 24" and counts roughly 24, they are very likely to just confirm 24 without counting precisely. Studies show open counts have significantly higher error rates.
- Does not catch systematic POS errors
- Employees may "count to the number" rather than actually counting
What Is a Blind Count?
In a blind count, the counter has no access to expected quantities. They count purely from what they see on the shelf and record their number. The discrepancy calculation happens afterward.
Pros:
- Eliminates confirmation bias: Every count is genuinely independent
- Catches errors that open counts miss
- Provides a true measure of inventory accuracy
- Better for detecting theft and shrinkage patterns
- More credible for financial auditing purposes
Cons:
- Takes 15-25% longer than open counts
- Can be frustrating for counters who are used to seeing expected numbers
- Requires a separate reconciliation step
When to Use Each Method
Use Blind Counts For:
- Quarterly or annual full physical inventories
- High-value items (electronics, jewelry, premium products)
- Items with a history of shrinkage
- Any audit where you suspect theft
- Financial compliance audits
- New employee training (to establish accurate baselines)
Use Open Counts For:
- Routine weekly cycle counts of low-risk items
- Quick spot-checks after receiving shipments
- Items where you are mainly verifying location, not quantity
- Time-constrained counts during business hours
The Hybrid Approach
Many successful retailers use a hybrid approach: blind counts for their quarterly full inventories and high-risk items, open counts for routine cycle counts. This gives you the accuracy benefits of blind counting where it matters most, without spending extra time on every single count.
The Bottom Line
If you are only using open counts, you are almost certainly missing shrinkage. The confirmation bias effect is real and well-documented. Switch to blind counts for your most important audits, and you will likely discover discrepancies you never knew existed.
Modern audit tools like EZ Audit make blind counting easy by automatically hiding expected quantities during the count phase and revealing discrepancies only after the count is submitted. This removes the temptation entirely and gives you truly accurate data.