Ask the purchasing manager at a mid-sized manufacturing company how much the monthly invoice approval process actually costs the business, and you will likely get a blank stare. She knows it takes hours. She knows several people are involved. But how many steps, how much waiting time, which step creates the biggest bottleneck — none of that is tracked. This is precisely the gap that Business Process Management, or BPM, is designed to close: it turns invisible transaction costs into measurable numbers.
BPM is a management approach that maps a business process from start to finish, step by step, and assigns time and resource costs to each step. Once the process map is drawn, three questions are asked for every step: Who performs this step, how long does it take, and what is that person’s hourly cost? Are there waiting periods between steps, and if so, how long do they run? Which steps involve unnecessary repetition or redundant approval layers? When these questions are answered, the real transaction cost of a purchase order, a sales order, or a new hire request becomes visible — and the figure is almost always higher than managers expect.
Take an order processing workflow as an example. From the moment a customer request arrives to the point a shipment is approved, five different departments may need to sign off. If each approval step involves an average of thirty minutes of waiting and ten minutes of active work, five steps alone generate two and a half hours of delay per order. Multiply that delay by the loaded hourly cost of the staff involved, then scale it by monthly order volume, and a significant cost figure emerges. BPM tools perform this calculation automatically and display which step carries the highest cost on a visual process map.
Beyond measurement, the real value of process cost analysis lies in setting improvement priorities. Not every step in a process carries equal weight; some consume a disproportionate share of time and resources while others are relatively light. BPM-based cost mapping shows managers where a targeted improvement will produce the highest return. In a textile company, for instance, a detailed look at the fabric procurement process might reveal that the longest delay is not in the technical approval step but in the preliminary accounting sign-off. Without this finding, improvement efforts focus on the wrong place and fail to deliver the expected savings.
In practice, calculating process costs through BPM relies on two data sources: employee hourly cost rates and measured step durations. Hourly cost data comes from payroll or HR records. Step durations are either captured automatically through the workflow module of a BPM software platform or, in the early stages of a project, collected manually through observation and structured interviews. In companies that do not yet have large-scale enterprise software or where system integration has not been established, the manual approach is more common. Once the data is gathered, it can be loaded into a spreadsheet to calculate the unit cost of each step; a BPM tool then overlays these figures directly onto the process map.
The most persistent practical challenge in this kind of project is collecting reliable duration data. Employees are sometimes reluctant to report their actual time spent, or processes are so informal that the boundaries between steps are unclear. In family-owned SMEs, where procedures follow personal habit rather than written policy, the mapping phase alone can take longer than anticipated. Resistance from middle managers is another real obstacle: having one’s processes examined in detail can feel threatening, and data sharing may stall as a result. Senior management sponsorship is not optional — without it, the project tends to lose momentum before the analysis is complete.
For an SME owner or general manager considering this approach, a practical starting point is to identify the three processes in the company that repeat most frequently and consume the most staff time. Purchase approval, customer order handling, and new employee onboarding appear on this list regularly. Picking one of these, mapping it step by step, assigning estimated durations and responsible roles to each step, and then calculating a rough unit cost does not require a specialized software platform. A spreadsheet and a two-hour working session with the relevant team members can be enough to get started. The goal at this stage is straightforward: make the invisible cost visible, and direct improvement energy to the step where it will matter most.
This article was originally written in Turkish by Gökhan MERCANOĞLU on May 22, 2006 and has been automatically translated into English and other languages using machine translation.