Quick answer: Stock variance is the difference between the inventory your system expects and what you physically count. A recurring or material gap can point to unrecorded waste, receiving errors, recipe inaccuracy or loss, so it needs investigating rather than simply adjusting the count.
When your stock count shows 8 kg of beef and your system says there should be 11 kg, that 3 kg gap is not rounding error. It is AED sitting in a bin, in someone's bag, or in a dish that consumed more than the recipe specified. TajerGo Ghost Inventory highlights idle stock using recorded sales activity, days idle and estimated capital tied up. Investigate physical shortages separately with counts and movement records.
What is stock variance in a restaurant?
Stock variance (also called inventory shrinkage or stock discrepancy) is the difference between what your inventory system expects you to have on hand and what you physically find when you count. It is expressed in units (kilos, litres, pieces) and often also in AED so you see the financial impact.
Formula:
A positive variance means you have more than expected (unusual, usually a recording error). A negative variance means you have less than expected (more common, and the focus of investigation).
What causes stock variance in a restaurant?
Most variance falls into one of five categories:
| Cause | How it creates variance |
|---|---|
| Unreported wastage | Spoilage or spills discarded without being logged; system still shows the stock |
| Theft | Ingredients leave the premises without being sold or recorded |
| Recipe over-portioning | Kitchen uses 180g when recipe specifies 150g; every sale under-deducts |
| Delivery discrepancy | Supplier delivers 9 kg but the GRN records 10 kg |
| Counting error | Physical count was inaccurate; the variance is in the measurement |
The investigation process is designed to rule these in or out one by one.
How do you investigate a stock variance?
Step 1: Check the magnitude and pattern. There is no universal percentage that is acceptable for every restaurant or ingredient. Re-count an isolated small difference, then investigate any difference that is material to that item's value, repeats on the same ingredient or changes unexpectedly from the normal pattern for that branch.
Step 2: Check for unreported wastage. Look at the wastage log for the period. Is there a legitimate reason for the gap? If an item was spilled or expired and was properly logged, the variance should already be explained. If the wastage log is empty but variance is high, wastage is being discarded without being recorded.
Step 3: Check deliveries. Pull the Goods Received Note (GRN) for every delivery of this ingredient in the period. Does the quantity received match the purchase order? Does it match what the supplier invoiced? A discrepancy here points to a delivery error or recording mistake.
Step 4: Check recipe adherence. Compare theoretical consumption (units sold × recipe quantity) to actual stock movement. If you sold 100 portions of a dish and the recipe says 150g of protein per portion, theoretical consumption is 15 kg. If your stock shows 18 kg used, the kitchen is portioning at 180g per dish. This is recipe variance - not theft, but still costing you money.
Step 5: Review other movements and supporting evidence. If Steps 1-4 do not explain the difference, check unlogged transfers or returns, unit conversions, and the timing of sales and counts. Review authorised access and adjustment records for the affected period. A stock discrepancy alone does not prove theft. Escalate an unexplained pattern for a documented investigation rather than accusing a team member from the count alone.
Worked example: count, recipe and goods-received note
This is an illustrative investigation, not proof of loss. At the end of a period, the system expects 18 kg of chicken: 10 kg opening stock plus a 10 kg goods-received note (GRN), less 40 sold dishes x 50 g recipe consumption. The physical count is 16.5 kg. Using the formula above, 16.5 kg − 18 kg = −1.5 kg: the count is 1.5 kg below the recorded expectation.
| Check | What the manager finds | Next action |
|---|---|---|
| Physical count | 16.5 kg after a careful re-count | Keep the count record and unit consistent |
| Recipe use | 40 dishes x 50 g = 2 kg | Check whether portions matched the recipe |
| Goods-received note | The supplier delivery was physically 8.5 kg, but 10 kg was recorded | Correct the receiving record with the supporting delivery evidence |
| Wastage log | No chicken discard recorded | Review only if the GRN does not explain the difference |
Correcting the GRN explains the 1.5 kg in this scenario. If the receiving record is correct, continue with portions, logged waste and other stock movements before treating the difference as unexplained.
What is an acceptable level of stock variance?
There is no universal threshold. Set a documented review trigger by item value, unit of measure, count frequency and the normal variation in your own operation. A recurring difference on a high-value protein may deserve an earlier review than a one-off measurement difference on dry goods; the right trigger is the one your manager can explain and apply consistently.
How does ghost inventory relate to stock variance?
In general inventory discussions, "ghost inventory" can mean stock recorded as available that cannot be found physically. That usage describes a record-to-count mismatch. It is different from the feature named Ghost Inventory in TajerGo.
TajerGo Ghost Inventory identifies idle stock using recorded sales activity, days idle and estimated capital tied up. It is a slow-stock review signal, not proof that stock is physically missing. Use physical counts and movement records to investigate actual variance.
What are the best practices to prevent recurring variance?
- Log all wastage at the time it happens. A wastage log that is completed after the fact is unreliable. Every discard should be logged immediately with a reason.
- Train kitchen sections on recipe adherence. Over-portioning is one of the most common sources of variance in restaurants with a new or inconsistent kitchen team. Recipe specs should be posted at each station.
- Verify deliveries against purchase orders. Do not accept and sign off a delivery without checking quantities physically against the PO. A discrepancy accepted at the door becomes permanent variance.
- Run spot counts on high-value items. Do not wait for the weekly full count to discover a large variance on chicken or salmon. Count these items daily.
- Investigate the cause of every variance, not just the correction. Adjusting stock to match the count without understanding why the gap existed means the same loss will recur next week.
How TajerGo can support the review
Use TajerGo's inventory, receiving, recipe and wastage records as the evidence trail for the same review sequence: compare a physical count with recorded stock movements, then review receiving and wastage before drawing a conclusion. Confirm the configured reports, permissions and workflow for your account before relying on a particular automation or audit-export behaviour.
For a restaurant evaluating software, explore TajerGo's stock-control tools or review restaurant inventory software for UAE operations. Bring one count discrepancy to the walkthrough so the team can show which records support the investigation.
Frequently asked questions
What is stock variance in a restaurant?
Stock variance is the difference between the quantity your inventory system expects and the quantity you physically count. Negative variance (less stock than expected) is the most common and points to unreported wastage, theft, recipe over-portioning, or delivery discrepancies.
How much stock variance is normal in a restaurant?
There is no universal percentage. Set a documented review trigger based on the item's value, unit of measure, count frequency and the normal pattern in your own operation. Repeated or material differences deserve investigation.
How do I find out what is causing my stock variance?
Work through a checklist: check the wastage log, delivery records against purchase orders, and theoretical consumption against actual stock movement. Then review transfers, returns, unit conversions and timing differences. A stock discrepancy alone does not prove theft; keep the supporting records and investigate unexplained patterns before drawing a conclusion.
What is the difference between stock variance and ghost inventory?
Stock variance compares recorded stock with a physical count. TajerGo Ghost Inventory instead identifies idle stock using sales activity, days idle and estimated capital tied up. It does not prove physical loss; investigate a count discrepancy using movement, receiving and wastage records.
Does recipe over-portioning cause stock variance?
Yes, and it is one of the most common but least investigated causes. If the kitchen consistently portions larger than the recipe specifies, actual ingredient consumption exceeds theoretical consumption. The stock depletes faster than sales account for, creating persistent variance that looks like theft or unrecorded waste.
Read next: Restaurant inventory management UAE: the complete guide (pillar) · How to track wastage in a restaurant kitchen · Ingredient-level vs finished-goods inventory tracking · What is ghost inventory and how to find it