The formula
Shrinkage Rate % = (Recorded Inventory − Physical Inventory) ÷ Sales × 100
The numerator is the shrinkage amount — the value your books claim that a physical count couldn’t find. Dividing by sales for the period expresses it as a rate you can track over time and compare against your own prior periods. (Some retailers divide by recorded inventory value instead; either works as long as you’re consistent.)
A worked example
Your records show $102,000 of inventory at cost. A physical count finds $100,000. Sales for the period were $400,000.
($102,000 − $100,000) ÷ $400,000 × 100 = 0.5%
You shrank by $2,000, a 0.5% shrinkage rate for the period. A single figure means little on its own — its value comes from tracking it over time and comparing it across locations and categories.
What causes shrinkage
- Shoplifting — external theft, often the single largest bucket.
- Employee theft — internal loss, frequently close behind.
- Administrative error — miscounts, mis-scans, pricing and receiving mistakes, and paperwork slips.
- Damage & spoilage — goods broken, expired, or rendered unsellable.
- Supplier / vendor fraud — paying for units that never arrived.
Most shrinkage traces back to theft and avoidable process errors — which is good news, because both respond to discipline.
How to read your shrinkage rate
There’s no universal “normal” figure — shrinkage varies widely by category, store format, and region, and any number quoted out of context can mislead. What matters is the trend: a stable, low rate is healthy, while a rate that climbs period over period is an early warning that a theft or process problem needs attention before it compounds. Track it against your own history, broken out by location and category, rather than against a borrowed benchmark.
How to reduce it
- Count regularly. Cycle counts and full stock takes catch variance early, before a small gap becomes a big one.
- Tighten receiving. Verify what arrives against the PO so supplier shortages and mis-ships are caught at the door.
- Investigate variance. Treat every count gap as a question to answer, not a number to plug.
- Record write-offs honestly. Damaged or lost goods should be removed with a reason, so the loss is measured rather than hidden.
Shrinkage and your other numbers
Unrecorded shrinkage quietly inflates your on-hand, which throws off weeks of supply, reorder timing, and your turnover math. Worse, phantom stock can suppress a reorder you actually needed — you think you have units you don’t. Measuring shrinkage keeps the rest of your planning honest.
Shrinkage in Vendee Pro
Vendee Pro pairs two tools for this: stock takes let you scan-to-count your shelves and surface the variance against expected on-hand, and stock adjustments record the resulting write-offs — with reasons like Damaged, Theft / Shrinkage, and Lost — behind a full, reversible audit trail. Counting finds the gap; the adjustment closes it on the record. Inventory feature →
Frequently asked questions
What is inventory shrinkage?
The difference between the stock your records say you have and the stock you physically count. It represents inventory lost to theft, error, damage, or fraud.
How do you calculate the shrinkage rate?
Subtract the physically counted inventory value from the recorded (book) value to get the shrinkage amount, divide by total sales for the period, and multiply by 100.
What causes inventory shrinkage?
Mainly shoplifting, employee theft, administrative and paperwork errors, damage, and supplier fraud. Most of it traces back to theft and avoidable process errors.
What is a normal shrinkage rate?
There’s no universal figure — it varies widely by category, format, and region. The trend matters more than the absolute number: a stable, low rate is healthy, while a rate climbing over time points to a theft or process problem worth investigating.
Measure shrinkage, don’t guess at it.
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