ABC analysis is an inventory management method that divides stock items into A, B and C classes according to their monetary importance for the business. The aim is instead of counting, purchasing and checking each product with the same frequency; to apply tighter control to the items that make up the majority of working capital.
To evaluate consumption pattern as well as product value ABC and XYZ classification guide and review it.
Which stock items should be monitored more closely?
Not every frequently used material is the most important stock. A rarely used but high unit cost part may have a larger share in the total inventory investment than thousands of cheaper consumables.
High value, strict control
A limited number of stock items that constitute the majority of the total annual consumption value.
Medium value, regular check
Products that are not as critical as A but require periodic follow-up and planned orders.
Low value, simple process
Even though the number of items is high, their share in the total stock value is low.
How to Calculate ABC Analysis?
Annual consumption value = Annual amount used × Unit cost
This value is calculated for each stock item. Products are sorted from highest to lowest value; Then the share in the total and the cumulative share are found.
Find annual usage
Calculate the quantity issued due to production, sales, or consumption in the last 12 months.
Multiply by unit cost
Multiply the quantity by a current and comparable cost value.
Sort from largest to smallest
Let the product with the highest annual consumption value come first.
Track cumulative share
Determine class boundaries by adding the value shares in order.
ABC Analysis Example
In the following example, five inventory items are sorted by annual consumption value. The total annual consumption value is 4,024,000 TL. The first two items account for about 82% of the total value, so they are classified as Class A.
servo motor
sheet steel
bearing
packaging box
Product label
A, B and C limits are not the same in every business
In practice, class A usually represents the first 70-80 percent of the total value, class B the next 15-20 percent, and class C the remaining low-value portion. These are not mandatory rules. A critical part that stops production can be tracked in a separate critical stock class, even if its consumption value is low.
The Same Stock Policy Should Not Be Applied to Each Class
Frequent counting and close purchase tracking
- Weekly or monthly cycle counting
- Low tolerance stock accuracy
- Supplier and deadline performance tracking
- Admin-approved order policy
Regular review
- Monthly or periodic counting
- Standard order point control
- Class update on demand change
- Moderate safety stock
Simple and low-cost process
- Less frequent cycle counts
- Economic bulk order
- Rules that reduce transaction costs
- Easy access warehouse layout
ABC class alone does not determine order quantity. To see how quickly a product is consumed, inventory turnover ratio calculation; for the amount to be held against demand and lead time variability. safety stock account use together.
Common Mistakes Made in ABC Analysis
Just looking at the number of sales
A cheap product that is widely sold and an expensive part that is rarely used do not have the same impact on inventory investment. Classification should be made by annual consumption value.
Using outdated cost
Costs from different dates or foreign‑currency purchases with old exchange rates can disrupt the sorting order.
Never renewing classes
As demand, product structure and price change, classes also change. The analysis should be rerun at least at specified intervals.
Missing critical parts
Parts of low value but that may stop production completely should not be left with only the C label; criticality should also be evaluated.
How to Use ABC Analysis with ERP and WMS?
Collects quantity and cost in the same record
The classification is updated by taking stock movements, purchasing costs, production consumption and periodic values from the same data structure.
Converts the class to a warehouse operation
For Class A products, rules such as more frequent cycle counting, controlled addressing and priority replenishment may be applied.
For addressable warehouse, cycle counting and tracking inventory movements KG WMS warehouse management system page; To evaluate overstock, placement and order decisions together smart warehouse and stock optimization guide and review it.
Frequently Asked Questions
What does class A mean in ABC analysis?
It refers to stock items that make up the majority of the total annual consumption value and need to be checked more frequently.
How often should ABC analysis be performed?
The price may be renewed monthly, quarterly or semi-annually, depending on the rate of change in demand and product structure. It should be run more frequently for rapidly changing stocks.
Is ABC analysis based on sales amount?
No. Basic classification is made according to the annual consumption value found by multiplying the annual amount used and the unit cost.
Are class C products unimportant?
No. Their monetary share is low; However, an item C that is out of production or in long supply may be critical to the operation.
Manage your counting and purchasing rules by product value
Let's determine the ABC classes suitable for your business by evaluating your stock movements, costs and warehouse control frequency together.