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Stock Reconciliation Guide

A system that says you have 40 units and a shelf that has 34 is not a minor inconvenience. It's a signal that something in your process is broken, and it's worth finding out what.

Key Takeaway: A system that says you have 40 units and a shelf that has 34 is not a minor inconvenience. It's a signal that something in your process is broken, and it's worth finding out what.

What's on This Page

  1. What Reconciliation Actually Is
  2. The Process
  3. Common Causes of Variance
  4. Checklist
  5. Common Mistakes
  6. FAQ

What Reconciliation Actually Is

Stock reconciliation is the process of comparing your system's recorded quantity against a physical count, investigating any variance, and correcting the system record with a documented reason.

The Process

  1. Count physically using a stock count sheet
  2. Compare counted quantity to system quantity for every SKU
  3. Investigate variances above a set threshold (for example, more than 5% or more than 3 units)
  4. Document the reason. Theft, damage, miscount, unrecorded sale. Before adjusting
  5. Adjust the system to match the verified physical count

Common Causes of Variance

Key habit: never adjust the system without a documented reason. An unexplained adjustment just hides the same problem until the next count.

Doing this more often, on smaller batches of stock, is far less painful than one dreaded annual count. See Cycle Counting for that approach.

For further reading, see the Association for Supply Chain Management (ASCM).

Checklist

Common Mistakes

Adjusting system records without documenting why. This hides the root cause, so the same discrepancy quietly returns at the next count.
Only reconciling once a year. Waiting this long means months of unnoticed small errors have already compounded into a large, hard-to-trace variance.
Treating every variance the same regardless of size. A 1-unit variance on a low-value SKU doesn't need the same investigation as a large variance on a high-value one.
Skipping reconciliation after a rushed count. A rushed physical count is more likely to be wrong itself, which can create false variances that waste investigation time.

FAQ

How often should reconciliation happen?

As often as counts happen. If you're cycle counting weekly, reconcile weekly rather than letting variances pile up unresolved.

What variance threshold should trigger an investigation?

A common starting point is anything over 5% or 3 units, whichever is smaller, though the right threshold depends on the value of the SKU.

Is it ever okay to adjust the system without knowing the reason?

No. An unexplained adjustment just hides the same underlying problem until the next count catches it again.

What's the most common cause of variance?

Sales recorded against the wrong SKU and stock received but never logged are two of the most frequent causes in small operations.

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