Walk into a mid-sized manufacturing unit in Ludhiana, Pune, or Coimbatore, and you’ll likely find the owner staring at a pile of raw material, baffled why production has ground to a halt. It’s rarely a machine breakdown or a lack of orders. The real culprit is a quiet, persistent mismatch between what’s actually on the shelf and what the production plan assumes is there. For small and medium enterprises (SMEs), inventory control isn’t about fancy software. It’s about raw discipline, clear visibility, and a few hard rules that stop your cash from turning into dusty boxes of forgotten stock.

Rajiv Sood has spent over two decades untangling the operations of family-run manufacturing businesses. The story is always the same. The promoter is a genius at sales and knows every machine on the floor, but treats the store room like a neglected attic. This guide lays out a grounded, no-nonsense approach to inventory control that fits the reality of an SME—tight working capital, manual processes, and a lean team—while delivering real improvements in order fulfilment and cash flow.

Why Inventory Control Falls Apart in SMEs

Most SME owners think inventory management is just stock counting. They believe that if the storekeeper maintains a register and the auditor does a quarterly reconciliation, the system is healthy. It’s not. The three biggest leaks are:

• Buying on instinct, not data: Purchase orders are raised based on a gut feeling or a quick glance at the shelf, not on actual consumption rates.
• Treating everything the same: A high-value motor and a low-cost bolt get the same level of control, wasting precious management attention.
• The hidden shop-floor stash: Supervisors hoard buffer stock near machines to avoid downtime. This ghost inventory never hits the books, leading to double ordering.

These aren’t problems you can fix by buying a software package. They’re fixed by changing daily behavior. The first mental shift is to realize that inventory isn’t just a store room headache. It’s a purchasing problem, a production planning problem, and a sales forecasting problem all rolled into one messy ball.

Sorting Your Stock So You Can Actually Manage It

You can’t give every item the same attention. There just isn’t enough time. A dead-simple method that works without any software is ABC classification, based on consumption value, not unit price. Here’s how to do it manually for a typical unit with 500 to 2,000 SKUs.

Step 1: Figure Out What Each Item Really Costs You

For every SKU, multiply the quantity used in the last 12 months by its landed cost. Don’t just use the purchase price. Add freight, duties, and handling. A junior accountant or the storekeeper can pull this together in a simple Excel sheet over a couple of days.

Step 2: Rank and Group

Sort the list from highest consumption value to lowest. The top 10–15% of items that eat up about 70% of your total spend are your A-class items. The next 20–25% are B-class. The remaining 60–70% are C-class.

Step 3: Set Different Rules for Each Group

A-class items: Watch these like a hawk. Review stock levels weekly. Order in small, frequent lots. Set a strict reorder point and never buy more than a month’s cover without a confirmed production order. Physically count these every two weeks.

B-class items: Review every two weeks or monthly. Use a simple min-max system. Keep a safety buffer of two to three weeks.

C-class items: Use a two-bin system. When one bin is empty, reorder a fixed quantity. Review quarterly. The goal here is to minimize ordering hassle, not to squeeze out every last rupee.

This one exercise often frees up 15–25% of the working capital trapped in inventory within three months, simply by slashing overstocking of A-class items and preventing stockouts of B-class ones.

Setting Reorder Points Without a Math Degree

Terms like “economic order quantity” or “standard deviation of demand” scare off most SME owners. The good news is, for most manufacturing SMEs, a simple reorder point (ROP) based on lead time and average consumption works just fine.

Reorder Point = (Average Daily Usage × Lead Time in Days) + Safety Stock

Here, safety stock isn’t a statistical model. It’s a practical gut-check. For an item with a reliable local supplier and a two-day lead time, keep three to four days of safety stock. For an imported item with a 45-day lead time and unpredictable customs clearance, keep 15–20 days. The trick is to write these numbers down and enforce them. When stock hits the reorder point, the storekeeper must raise a purchase requisition right then—not wait for the weekly meeting.

Getting a Grip on Work-in-Progress (WIP)

WIP is the ghost inventory. It sits on the shop floor, between machines, waiting for the next operation. In many SMEs, WIP isn’t tracked at all. Production cycles stretch, and cash gets stuck in half-finished goods. A practical fix is to cap WIP using a simple kanban-style approach.

For each work centre, decide the maximum number of jobs or pallets that can wait in the queue. Mark the floor with painted squares or use a rack with limited slots. If the queue is full, the previous operation must stop. This feels wrong because machines might sit idle. But in reality, it exposes bottlenecks fast and slashes overall lead time. One auto component maker in Gurugram cut its WIP by 40% in six weeks just by enforcing a “no more than three pallets” rule at each machine.

The Monthly Stock Review: Your New Best Habit

Inventory control isn’t a one-and-done project. It needs a monthly rhythm. Rajiv Sood suggests a 60-minute meeting with the storekeeper, production head, and purchase manager. The agenda is non-negotiable:

1. Review stockouts from the last month. Why did they happen? Was the reorder point wrong, or was the purchase order late?
2. Check the top 20 A-class items. Are stock levels within the agreed range? If not, adjust on the spot.
3. Flag any item that hasn’t moved in 90 days. Decide: can it be used in a future order, returned to the supplier, or scrapped?
4. Update lead times based on actual supplier performance. If a supplier consistently delivers in 5 days instead of the planned 7, lower the reorder point.

This meeting isn’t about pointing fingers. It’s about fixing the system. The storekeeper needs to feel safe reporting discrepancies without fear. When a culture of honest review takes hold, inventory accuracy can jump from 60–70% to over 95% in a few months.

Handling Seasonal Demand and Bulk Discount Temptations

Manufacturing SMEs often face a tough call: buy raw material in bulk when the price dips or a supplier offers a discount, but risk sitting on excess stock if orders dry up. The answer is to separate the purchasing decision from the inventory decision.

If the purchase manager gets a bulk discount offer, the promoter should evaluate it as a trading decision, not an inventory one. Ask: “If we buy this extra 10 tonnes of steel at today’s price, can we sell it as-is to another unit if our own orders don’t come through?” If the answer is yes, treat it as a speculative buy and keep it out of the regular stock count. If the answer is no, stick to the reorder point. This simple mental wall stops the store room from becoming a graveyard for failed bets.

Technology That Actually Helps (Once You’ve Done the Basics)

While this guide focuses on manual systems, a quick word on tech is needed. Many SMEs buy expensive ERP systems and then use only the invoicing module. A smarter path is to start with a simple barcode-based stock tracking app that costs a few thousand rupees a month. The storekeeper scans items in and out with a basic smartphone. The owner gets a daily WhatsApp report of A-class stock levels. This bridges the gap between manual registers and full automation without disrupting the floor.

But here’s the catch: technology only works if the underlying process is sound. Automating a broken process just gives you faster broken results. Fix the classification, reorder points, and review meeting first. Then layer on the app.

Frequently Asked Questions

How often should we do a full physical stock count?

For A-class items, count weekly or fortnightly. For B-class, monthly. For C-class, quarterly. A full wall-to-wall count once a year is enough if you maintain cycle counting. The key is consistency, not a once-a-year marathon that disrupts production.

What is the biggest mistake SME owners make with inventory?

Treating inventory as an asset rather than a cost. Stock on the shelf is cash that can’t be used for salaries, marketing, or new machines. The goal is to hold the minimum stock needed to meet customer delivery promises, not to fill the store room because raw material prices might rise.

How do we handle slow-moving and obsolete stock?

First, stop ordering it. Then, create a dedicated area for non-moving items and review it monthly. Offer it to customers at a discount for maintenance spares. Sell it to scrap dealers. If it hasn’t moved in 12 months and has no foreseeable use, write it off. The tax benefit of writing off dead stock is often better than the cost of storing it.

Can we manage inventory well without a dedicated store manager?

Yes, if the promoter or plant head spends 30 minutes a day on it. Inventory control is a leadership habit, not a job title. The owner must set the rules, review the numbers, and hold people accountable. A storekeeper can execute, but the discipline has to come from the top.

Conclusion: Pick One Item and Start Tomorrow

Fixing inventory management in a manufacturing SME doesn’t need a consultant or a fat budget. It needs you to pick one A-class item tomorrow, calculate its reorder point, and tell the storekeeper to follow it for a week. Then add five more items. Then hold the first monthly review meeting. The results—fewer stockouts, lower working capital, and a lot less stress—will build their own momentum. As Rajiv Sood often tells his clients, “Your store room is a bank vault. Treat it with the same respect you treat your current account.”