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How to find the real cost of a product in your factory

In any factory, knowing what a product costs is more than adding up materials. The real number is shaped by the materials used, labor, run time, overhead, scrap, rework, and other costs tied to production. That's why you can sell a product thinking the margin is healthy, while the actual cost sits higher than you expected.

First: start with materials

The obvious piece is raw materials. If a product needs a certain set of inputs, you should know the quantity per unit, the cost of each material, the amount actually used, how purchase prices move, and what gets wasted. A material that costs 100 doesn't automatically mean 100 of material cost in the finished product. If there's scrap along the way, it has to be in the picture.

Second: count scrap honestly

Scrap is one of the biggest reasons expected and actual cost drift apart. It can be wasted material, off-spec output, discarded parts, or rework on defective units. If you don't account for the scrap rate, you're building cost on the assumption that every bit of material became sellable product, which isn't always the case. And more important than logging scrap: why did it happen, does it repeat, and is the rate normal for the process?

Third: labor is part of the cost

A worker's time on the line has a cost. So manufacturing cost doesn't depend on material alone, but also on the time and people needed. One product takes an hour, another takes four, so direct labor cost naturally differs. That's why run-time data has to be clear enough to know the real (or standard) time per product.

Fourth: don't forget overhead

Some costs don't show up directly in the product but are part of making it: power, equipment maintenance, machine depreciation, some operating expenses, and costs tied to the production site. How you load these onto products depends on the factory and the accounting policy, but ignoring them entirely makes the cost look lower than it really is.

Fifth: separate expected cost from actual

You can estimate cost before production from materials, time and expected expenses, then find after production that the actual is different: a material price changed, scrap rose, run time ran long, or a batch needed rework. The gap between expected and actual tells you something important about how efficient the process really is.

A simple example

A factory estimated cost as materials + labor + expected overhead. But during production scrap ran higher than usual, part of the batch needed rework, and one material's price went up. The result: actual cost ended up above the number used for pricing. Price off the old cost alone, and you can sell more while making a thinner margin than you think.

This is where an ERP for factories helps

Costing needs data from more than one place: inventory knows the materials used, purchasing knows buy prices, production knows quantities and operations, operations can supply labor data, and accounting records the financial costs. When each piece lives in a separate system, assembling the full picture is harder. In an integrated ERP you can connect the data to build a clearer view of production cost. The system alone doesn't decide the cost. That depends on your activity and accounting policy. But having the data in one place makes the analysis and follow-up more accurate.

Before you call a product profitable, ask what it really costs. Price minus cost is where profitability starts, but the quality of the answer depends on the quality of the cost data. IntagyaERP helps factories connect inventory, purchasing, production and accounting in one system, so operations and costs are easier to follow.