Every rand sitting on your shelves, in your warehouse or in a delivery truck is cash you can’t spend on anything else. That’s why getting inventory and inventory management right is one of the fastest ways to protect your margins, keep customers happy and sleep better at year-end.
Most guides on inventory and inventory management are written for big American or European companies with ERP systems and dedicated planning teams. This one is written for South African retailers, wholesalers, warehouses, pharmacies, hardware stores and manufacturers who need practical answers: what inventory actually is, how to manage it, which methods work, which numbers to track, and how a proper stock take keeps the whole system honest.
We count stock for a living at StockCounts, so you’ll find plenty of hands-on advice from the warehouse floor, not just textbook definitions.
Key takeaways
- Inventory is everything you hold to sell or to use in making what you sell: raw materials, work in progress, finished goods and supplies.
- Inventory management is the process of ordering, storing, tracking, counting and controlling that stock so you have enough to meet demand, but not so much that cash gets tied up.
- Your system’s stock figures are only as good as your last accurate count. Regular stock takes and cycle counts are the foundation of good inventory management.
- In South Africa, inventory valuation affects both your financial statements (IFRS / IAS 2) and your tax (SARS treats closing trading stock as part of income).
- Track a handful of KPIs (inventory accuracy, shrinkage, turnover and days of inventory) and act on what they tell you.
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Contents
What is inventory?
Inventory (also called stock or trading stock) is the goods and materials a business holds with the intention of selling them, or of using them to produce something it sells. On your balance sheet it is a current asset. In practice, it is often one of the largest amounts on that balance sheet, especially for retailers and distributors.
The main types of inventory
| Type of inventory | What it is | Typical example in SA |
|---|---|---|
| Raw materials | Inputs that still need to be processed | Steel, timber, flour, fabric |
| Work in progress (WIP) | Partly finished goods on the production floor | Furniture that has been assembled but not yet varnished |
| Finished goods | Products ready to sell | Packaged groceries, boxed appliances, clothing on rails |
| MRO supplies | Maintenance, repair and operating items used to run the business | Packaging, cleaning materials, spare parts |
| Goods in transit | Stock you own that is on the road, at sea or at the port | A container still clearing at Durban harbour |
| Consignment stock | Stock held by one party but owned by another until sold | A supplier’s display stock in your store |
Knowing which type you’re dealing with is the first step in inventory and inventory management. Raw materials and WIP need production planning. Finished goods need demand forecasting and shelf management. Goods in transit and consignment stock are notorious for creating differences at stock-take time, because it isn’t always clear who owns what on the count date.
What is inventory management?
Inventory management is the process of planning, ordering, receiving, storing, tracking, counting and controlling stock throughout its life in your business, from the purchase order to the sale. The goal is simple to describe and hard to do: have the right stock, in the right quantity, in the right place, at the right time, at the lowest reasonable cost.
People often use a few related terms interchangeably. They overlap, but they’re not quite the same thing:
| Term | Focus | Question it answers |
|---|---|---|
| Inventory management | The whole process: buying, storing, moving, selling and reviewing stock | “Are we holding the right stock to meet demand profitably?” |
| Inventory control (stock control) | Accuracy and security of the stock you already hold | “Is the stock we think we have actually there?” |
| Stock take (physical inventory count) | Physically counting what is on hand at a point in time | “What exactly do we have right now, and what is it worth?” |
| Inventory optimisation | Fine-tuning stock levels for service and profit | “Where can we hold less without losing sales?” |
Think of inventory and inventory management this way: inventory management is the strategy, stock control is the discipline, and the stock take is the reality check.
Why inventory and inventory management matter for South African businesses
Good inventory and inventory management is not just an operations issue. It touches cash flow, customer service, compliance and your bottom line.
1. Cash flow
Stock you can’t sell is money you can’t use. Overstocking ties up working capital, uses warehouse space and increases the risk of damage, theft and obsolescence. Understocking does the opposite damage: you lose sales, disappoint customers and pay extra for rush orders.
2. Customer service
Customers who find empty shelves, or are told an item is “in the system” but can’t be found, often don’t come back. Accurate stock records let your sales team promise only what you can deliver.
3. Accurate financial statements
Under IFRS, which South African companies generally report under (or IFRS for SMEs for many smaller entities), inventories are measured at the lower of cost and net realisable value. IAS 2 allows the first-in, first-out (FIFO) or weighted average cost formulas, and does not permit last-in, first-out (LIFO) (IFRS Foundation, IAS 2 Inventories). If your stock quantities are wrong, your cost of sales, gross profit and asset values are wrong too.
4. Tax
SARS includes the value of trading stock you hold at the end of the year of assessment in your income under section 22 of the Income Tax Act, generally at cost price, with a write-down only allowed where there is a just and reasonable diminution in value, for example damage, deterioration or a change in fashion (SARS Interpretation Note 140). In plain terms: your year-end stock take directly affects your tax bill, and you need a credible, documented count to support it. Always confirm the detail with your accountant or tax practitioner.
5. Shrinkage and loss
Shrinkage is the difference between the stock your records say you should have and the stock you actually have. It comes from theft (internal and external), damage, admin errors, supplier short-deliveries and mis-scans. For context, the US National Retail Federation reported an average shrink rate of 1.6% of sales in fiscal 2022 (NRF, 2023). That is US data, not South African, but the lesson is universal: you can’t reduce a loss you aren’t measuring, and only physical counts measure it.
The inventory and inventory management process, step by step
Whatever your size or industry, inventory flows through the same basic cycle. Tighten each step and the whole system improves.
- Forecast demand. Use sales history, seasonality (think December trading, back-to-school and Black Friday), promotions and supplier lead times to estimate what you’ll sell.
- Set stock levels and reorder points. Decide minimum and maximum levels for each product, and the point at which you reorder (see the formulas below).
- Purchase. Raise purchase orders against those levels, not gut feel. Negotiate lead times and minimum order quantities with suppliers.
- Receive and inspect. Count and check every delivery against the purchase order and the supplier’s invoice before you sign. Short deliveries that slip through at receiving become “shrinkage” later.
- Store with a location system. Give every product a home: an aisle, bay and bin location. Label bins with barcodes. Stock that has no fixed location is stock that gets lost.
- Pick, pack and sell. Scan products out as they move, so the system updates in real time.
- Count and reconcile. Run regular cycle counts and periodic full stock takes, compare counted quantities with system quantities, and investigate the variances.
- Review and improve. Look at your KPIs, clear dead stock, adjust reorder points and fix the process gaps your counts uncover.
Most businesses are reasonably good at steps 1 to 6. Step 7 is where things usually fall apart, because counting is time-consuming, disruptive and easy to get wrong without the right tools.
Inventory management methods and techniques
There’s no single “best” method for inventory and inventory management. Most successful businesses combine a few of these.
ABC analysis
ABC analysis ranks your products by value (usually annual usage value or sales value):
- A items: a small share of your product range that makes up most of your stock value. Count these most often and manage them most tightly.
- B items: moderate value. Count and review them regularly.
- C items: the large tail of low-value items. Use simpler controls and count them less often.
ABC analysis is also the easiest way to set up a sensible cycle-counting schedule.
Economic order quantity (EOQ)
EOQ estimates the order size that minimises the combined cost of ordering and holding stock:
EOQ = √(2 × D × S ÷ H)
Where D is annual demand in units, S is the cost of placing one order, and H is the cost of holding one unit for a year. EOQ assumes fairly steady demand, so treat it as a starting point rather than a rule.
Reorder point and safety stock
The reorder point tells you when to order:
Reorder point = (average daily usage × lead time in days) + safety stock
Safety stock is the buffer that protects you against late deliveries and demand spikes. Products with unreliable suppliers, long import lead times or very important customers need more of it.
Example (illustrative figures): if you sell 20 units a day, your supplier takes 10 days to deliver and you keep 60 units of safety stock, your reorder point is (20 × 10) + 60 = 260 units.
Just-in-time (JIT)
JIT means ordering or producing stock only as it is needed. It keeps holding costs low but depends on reliable suppliers and logistics. With port delays and transport disruptions a real risk in South Africa, many businesses run a “JIT with a buffer” approach rather than pure JIT.
FIFO, FEFO and weighted average
These describe how stock is issued and valued:
- FIFO (first in, first out): the oldest stock is sold or used first. Essential for perishables and fashion.
- FEFO (first expired, first out): the stock with the earliest expiry date goes first. Standard practice in pharmacy, food and cosmetics.
- Weighted average cost: each unit is valued at the average cost of all similar units.
As mentioned above, IAS 2 does not allow LIFO, so South African businesses reporting under IFRS use FIFO or weighted average for valuation.
Material requirements planning (MRP)
Manufacturers use MRP to work backwards from a production plan to the raw materials and components needed, and when.
Which method suits your business?
| Method | Best for | Watch out for |
|---|---|---|
| ABC analysis | Almost every business with more than a few dozen SKUs | Reclassify regularly; product values change |
| EOQ | Stable, predictable demand | Seasonal or promotional products |
| Reorder points + safety stock | Retail, wholesale and spares | Lead times that change without warning |
| JIT | Manufacturers with reliable local suppliers | Supply disruptions and port delays |
| FIFO / FEFO | Perishables, pharmaceuticals, fashion | Needs disciplined shelf rotation |
| MRP | Manufacturers with bills of materials | Garbage in, garbage out if stock records are wrong |
Notice the theme in that last column. Every method depends on accurate stock quantities. If your system says you have 260 units and you actually have 140, your reorder point, EOQ and MRP plan are all wrong.
Stock takes: the foundation of accurate inventory management
In inventory and inventory management, a stock take (physical inventory count) is where your records meet reality. There are two main approaches, and most well-run businesses use both.
| Full stock take (wall-to-wall count) | Cycle counting | |
|---|---|---|
| What is counted | Everything, at one point in time | A small portion of stock on a rolling schedule |
| How often | Usually annually or bi-annually, often at year-end | Daily, weekly or monthly |
| Disruption | High: trading or dispatch may be paused | Low: counted during normal operations |
| Main purpose | Financial statements, tax, audits, handovers | Ongoing accuracy and early detection of problems |
| Best for | Year-end, change of ownership or management, franchise audits, after a theft incident | High-value (A) items, fast movers, problem areas |
When should you do a full stock take?
- At financial year-end, for your financial statements and SARS return
- When a business, franchise or branch changes hands
- When a store or warehouse manager changes
- After a break-in, fire, flood or other loss event (for insurance claims)
- When your gross profit percentage suddenly drops without an obvious reason
- Before migrating to a new inventory management or POS system, so you start with clean opening balances
How to prepare for a stock take: a checklist
- Set the date and cut-off. Agree exactly when receiving and dispatch stop, and how goods in transit, returns and consignment stock will be handled.
- Process all paperwork. Capture every delivery, return, transfer and invoice up to the cut-off so the system figures are complete.
- Tidy and consolidate. Put like products together, close open boxes, and clearly mark damaged, expired and non-stock items.
- Map and label locations. Every aisle, bay and bin should have a unique, barcoded location so you know what has been counted and where.
- Check barcodes. Make sure every product scans and that barcodes in the system match the products on the shelf.
- Brief the teams. Explain the counting rules (cases vs units, damaged stock, unlabelled items) before the count starts.
- Count twice, independently. Have a second team re-count each location, or at least the high-value and high-variance ones, and compare.
- Investigate variances before you close the count. Re-count anything significant while the stock is still frozen, not a week later.
- Export and import cleanly. Get the final counts into your inventory system in a format it accepts, with an audit trail of adjustments.
Common stock take mistakes
- Counting while deliveries are still being received or orders are still being picked
- Counting cases as units (or the other way round)
- Missing stock in back rooms, top shelves, returns areas and delivery vehicles
- Using tired staff late at night with paper sheets and no second count
- Accepting variances without investigating them
- Re-keying count sheets by hand into the system, which introduces new errors
This is exactly why we built our own stock take system at StockCounts. Every bin is counted twice by different teams and the software compares both counts. It keeps track of which bins have been counted once, twice or not at all, and when you give us your expected quantities, we can pull variance reports at any stage of the count. The final results export to CSV, which can be imported into almost any inventory management system.
Inventory and inventory management KPIs every business should track
You don’t need dozens of metrics to run inventory and inventory management well. These six tell you most of what you need to know.
| KPI | How to calculate it | What it tells you |
|---|---|---|
| Inventory record accuracy | Locations (or SKUs) where system quantity matches counted quantity ÷ total locations counted × 100 | How far you can trust your system |
| Shrinkage rate | (Book stock value − physical stock value) ÷ sales for the period × 100 | How much you’re losing to theft, damage and errors |
| Inventory turnover | Cost of goods sold ÷ average inventory value | How many times you sell through your stock in a period |
| Days inventory outstanding (DIO) | Average inventory value ÷ cost of goods sold × number of days in the period | How many days of stock you’re holding |
| Stockout rate | Orders (or lines) that couldn’t be filled from stock ÷ total orders × 100 | Lost sales and service problems |
| Dead stock percentage | Value of stock with no movement in a set period (for example 6 or 12 months) ÷ total stock value × 100 | Cash trapped in stock that isn’t selling |
Benchmarks vary widely by industry, so compare yourself mainly with your own previous periods. The trend matters more than any single number.
Inventory and inventory management tools and technology
Spreadsheets
Fine for a very small business with a handful of products. They become risky quickly: no real-time updates, no audit trail and plenty of room for formula and typing errors.
POS and accounting systems
Most retail point-of-sale and small-business accounting packages include basic stock control. For many SMEs this is enough, as long as the stock quantities are kept accurate with regular counts.
Inventory management software, ERP and WMS
Larger operations use dedicated inventory management software, an ERP system or a warehouse management system (WMS) with bin locations, multiple warehouses, serial and batch tracking, and automated reordering.
Barcodes, scanners and RFID
Barcode scanning is the single biggest upgrade most businesses can make to both day-to-day stock control and stock takes. It’s faster than writing, and it removes most of the transcription errors that come with paper count sheets. RFID can read many tags at once without line of sight, but it costs more per item and suits specific use cases, such as high-value goods or apparel.
Our advice: whatever system you use for inventory and inventory management, it is only as good as the data in it. Even the most expensive ERP will give you poor reorder suggestions if its stock quantities are wrong. That’s why physical counts remain part of every serious inventory management setup.
Common inventory and inventory management problems (and how to fix them)
| Problem | Likely cause | Practical fix |
|---|---|---|
| System shows stock that can’t be found | Mis-picks, unrecorded damages, theft, wrong locations | Cycle count the affected locations; tighten bin discipline |
| Large variances at every year-end | No counting between annual stock takes | Introduce ABC-based cycle counting |
| Frequent stockouts on best sellers | Reorder points too low or not updated | Recalculate reorder points and safety stock using current lead times |
| Too much slow-moving stock | Over-buying, poor forecasting | Run a dead-stock report; discount, return or bundle old stock; buy closer to demand |
| Supplier short-deliveries | Weak receiving process | Count and check every delivery before signing the delivery note |
| Count results take days to capture | Paper count sheets and manual capturing | Use barcode scanners and import counts electronically |
Should you do your stock take in-house, rent equipment or outsource?
There’s no one right answer. It depends on how often you count, the size of your operation and whether your own staff can be spared.
| Option | How it works | Best for |
|---|---|---|
| Full-service stock count | Our trained team (or your staff, guided by us) handles the entire count on-site, with our scanners and software, and you receive detailed reports afterwards | Year-end counts, large stores and warehouses, audits and handovers where independence matters |
| Equipment rental | You rent barcode scanners and tablets preloaded with our counting software, with training and support | Businesses that prefer to count in-house for periodic or seasonal counts |
| Equipment purchase + software subscription | You buy the scanner and tablet kit and subscribe to our stock count software | Businesses that count frequently and want their own system for the long term |
You can compare these options in more detail on our stock take services page.
An independent, professional count has another benefit: it separates the people who manage the stock from the people who count it. That makes the results more credible to owners, franchisors, auditors and insurers.
Frequently asked questions
What is the difference between inventory and inventory management?
Inventory is the stock itself: raw materials, work in progress, finished goods and supplies. Inventory management is the process of ordering, storing, tracking, counting and controlling that stock so you can meet demand without tying up too much cash.
How often should a business do a stock take?
Most businesses do at least one full stock take a year, usually at financial year-end. Many add bi-annual or quarterly counts, plus ongoing cycle counts of high-value and fast-moving items. If your variances are large, count more often until you’ve found and fixed the cause.
What is the difference between a stock take and cycle counting?
A stock take counts all your stock at one point in time, usually with trading or dispatch paused. Cycle counting counts small sections of stock on a rolling schedule during normal operations. Cycle counts keep records accurate all year; a full stock take gives you a complete, documented snapshot for financial reporting.
What causes stock variances?
The most common causes are theft, damage and expiry that isn’t recorded, receiving errors and supplier short-deliveries, picking and scanning mistakes, unit-of-measure confusion (cases vs units) and incorrect cut-off at the time of the count.
Do I need inventory management software?
If you have more than a small number of products, multiple locations or regular stock movements, yes, some form of software (POS, accounting, ERP or WMS) is worth having. But software doesn’t replace counting. Regular physical counts keep the system’s figures accurate.
Does StockCounts work outside Centurion?
Yes. StockCounts is based in Centurion, Gauteng, and our full-service stock counts are available nationwide across South Africa. Contact us with your location, type of stock and preferred dates.
Book a stock count with StockCounts
Strong inventory and inventory management starts with knowing exactly what you have. Whether you need a year-end stock take, a handover count, an independent audit count or the equipment to count yourself, StockCounts takes the hassle out of stock takes. We focus on giving you the most accurate count in the quickest possible time, with double counts, full bin control, live variance reporting and clean CSV exports for your system.
Ready to get an accurate count? Book your stock count or request a quote, or contact Corne (Director) on 082 922 7173 / [email protected], or Edward on 072 643 6425 / [email protected]. You’ll find us at 142 South Street, Falcon Crest Office Park, Doringkloof, Centurion. Want to see how we work first? Visit the StockCounts home page.
Sources
- IFRS Foundation: IAS 2 Inventories
- South African Revenue Service: Interpretation Note 140, Diminution in the value of closing stock
- National Retail Federation: Shrink accounted for over $112 billion in industry losses in 2022
This article is general information, not accounting or tax advice. Speak to your accountant or tax practitioner about your specific situation.