activity-based costing
Activity Based Costing is a way of pricing what you sell by tracking exactly what each activity behind it truly costs you, more than guessing.
In plain English
Remember the woman at the market who sells rice by the paint bucket. She does more than charge for the rice. If you ask her to also bag it, consider it separately, and deliver it to your car, she calmly adds a little more to the price, because she knows carrying that bucket to your boot costs her time and effort that plain scooping does not.
That, in plain terms, is Activity Based Costing. Instead of spreading all your costs evenly across everything you produce, like pouring garri equally into every bowl regardless of size, you look at the actual activities involved in making a product or service, and you cost each one properly.
A bakery in Lagos making both plain bread and fancy iced cakes cannot cost them the same way. The plain bread just needs mixing and baking. The iced cake needs mixing, baking, decorating, and careful packaging so the icing does not smear on delivery. If the bakery charges both items based on one average cost per unit, the iced cake calmly eats into the profit, because its real cost is higher.
A small manufacturing firm in Birmingham making both simple metal brackets and custom machine parts faces the same puzzle. The custom parts need more design time, more machine setup, more quality checks. Activity Based Costing forces the business to trace those extra activities to the product that actually causes them, rather than letting the simple bracket calmly subsidise the complicated part.
This matters most when a business sells several different products or services and suspects that some are secretly more expensive to make than the price suggests. Without this method, a company can keep selling something at a loss for years, wondering why profit never grows even though sales look fine on paper.
It takes more work than the old style of just dividing total cost by total units, but it tells you the truth about where your money actually goes.
A phone accessory business in Abuja sells plain phone cases and custom printed cases. Using average costing, both are priced at ₦1,500. But tracing actual activities shows printing, design approval, and quality checks add ₦600 extra per custom case. Once the business applies Activity Based Costing, it prices custom cases at ₦2,200 and finally sees real profit instead of a hidden loss.
Questions people ask
Is Activity Based Costing only for big companies?
No. Any business with more than one product or service can use it, even a small food seller with different meal combos. The bigger the variety, the more useful it becomes.
How is this different from normal costing?
Normal costing often spreads overheads evenly across all products. Activity Based Costing traces overheads to the specific activities that cause them, then charges those activities to the right product, giving a truer cost consider.
Does Activity Based Costing change the price customers pay?
Not directly. It changes what you know about your true cost, which then helps you set smarter prices, drop unprofitable items, or renegotiate suppliers with confidence.
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