Restructuring of Management Accounting and Costing: Cost Center Application Case Study in a Manufacturing SME

Tracking true production costs is one of the most complex business challenges for Greek manufacturing companies. Often, financial accounting provides an overall picture of company-level profitability, but conceals significant distortions at the level of individual products (SKUs), production lines, or distribution channels.

This case study documents the process of reorganizing the costing and management accounting system in a medium-sized Greek manufacturing unit, analyzing the transition phases, its integration with the ERP and the Greek Accounting Standards (ELP - Law 4308/2014), as well as the practical conclusions for management.

Company Profile and Initial Diagnosis

“VORRAS Packaging & Food Industry S.A.” (illustrative name) operates in the production and standardization of food products, employs 48 people, and manages 110 active product codes (SKUs), categorized into three main families: Branded Products, Private Label Products, and HORECA Products.

The Existing Situation

The company operated with a simplified expense allocation model. While direct materials (raw materials, packaging materials) were accurately assigned per production batch via the ERP, other cost elements were allocated horizontally:

• Direct Labor: Allocated based on theoretical man-hours from technical specifications, without recording actual production variances.
• Manufacturing Overhead (MOH): Energy, machinery depreciation, maintenance, and indirect factory labor were allocated using a uniform percentage of raw material costs.
• Administrative and Selling Expenses: Added as a fixed horizontal markup of 12% on the final manufacturing cost for all orders.

Symptoms of Distorted Costing

Management observed two alarming phenomena:

1. Sales of the Private Label series increased significantly with an apparent gross margin of 18%, but the company's operating profits remained stagnant.
2. In tenders for the Branded series, the company consistently lost out to competitors due to “high costing,” despite believing it had modern, efficient equipment.

Initial diagnosis indicated that cross-subsidization was occurring: simple, high-volume products (Brand) were burdened with costs caused by complex, low-volume products (Private Label), which required frequent line changes, specialized settings, and extensive quality control.

Methodology for Designing Cost Centers and Allocation Drivers

To capture true costs, the company proceeded with designing a Management Accounting model based on Functional Cost Centers and distinct Cost Drivers.

```

[ General Ledger Primary Expenses (ELP Group 6) ]

│

▼

┌───────────────────────────────────────┐

│ Allocation to Cost Centers │

└───────────────────────────────────────┘

│ │

▼ ▼

[ Support Cost Centers ] [ Main Production Cost Centers ]

• Machine Maintenance • Processing Line A

• Quality Control • Packaging Line B

• Warehouse & Logistics • Automated Palletizing Line

│ │

└────────────┬────────────┘

▼

[ Cost Drivers ]

• Machine Operating Hours

• Number of Lab Tests

• Setup & Cleaning Times

│

▼

[ Final Cost per SKU ]

```

1. Cost Center Segregation

Cost centers were divided into two levels:

• Main Production Centers:

* CC-100: Processing Line A (Capital-intensive / automated).

* CC-200: Processing Line B (Medium capital-intensive / semi-automated).

* CC-300: Final Packaging & Boxing Line.

• Factory Support Centers:

* SCC-010: Technical Maintenance & Repairs Department.

* SCC-020: Quality Control Laboratory (Quality Assurance).

* SCC-030: Internal Raw Material Handling & Logistics.

2. Selection of Cost Drivers

Instead of horizontal allocation based on material value, specific resource consumption drivers were chosen:

• Energy & Machinery Depreciation: Allocated based on actual machine operating hours per batch.
• Setup Costs for Changeovers: Directly charged the setup and cleaning hours to the batch that incurred them, instead of allocating across total production.
• Quality Control: Allocated based on the number of samples and analyses per SKU.
• Indirect Supervisory Labor: Allocated based on actual Direct Labor Hours.

Data Architecture and Alignment with ELP

The implementation of production costing had to remain fully compatible with the requirements of Law 4308/2014 (ELP), particularly regarding inventory valuation and period expense recognition.

Distinction Between Product Cost and Period Expenses

According to ELP (Article 20):

• Inventory Cost Element: Includes the acquisition cost of raw materials, direct labor, and variable and fixed manufacturing overhead attributable to normal production capacity.
• Period Expenses (Not capitalized in inventory): Administrative expenses, selling/marketing expenses, research & development expenses, and idle capacity costs (underutilization of the factory below normal capacity).

```

+-------------------------------------------------------------------------+

| TOTAL BUSINESS EXPENSES (GROUP 6) |

+------------------------------------+------------------------------------+

| MANUFACTURING COST | PERIOD EXPENSES |

| (Capitalized in Inventory) | (Directly to P&L) |

+------------------------------------+------------------------------------+

| • Direct Materials (Raw/Auxiliary) | • Administrative Expenses |

| • Direct Production Labor | • Selling & Marketing Expenses |

| • Variable MOH (Electricity, etc.) | • Financial Expenses |

| • Fixed MOH (Normal Capacity) | • Idle Capacity Cost (Underutilization) |

+------------------------------------+------------------------------------+

```

Reconciliation Process Between ERP and General Ledger

To ensure data reliability, a monthly reconciliation process was established:

1. Trial Balance Check: Agreement of total production expenses in the General Ledger with the sum of charges to Cost Centers.
2. Idle Capacity Isolation: In months with seasonal production drops, fixed MOH was allocated to products only by the percentage of actual to normal capacity. The excess amount was recorded directly as “Idle Capacity Cost” in the income statement, preventing artificial overvaluation of inventory at month-end.

Step-by-Step Implementation: 5-Phase Roadmap

The project implementation lasted 16 weeks and was structured into five distinct stages:

Phase 1: Documentation and Update of Technical Specifications (BOMs & Routings)

• Review of production recipes (Bill of Materials) for all 110 SKUs.
• Time-study of actual production rates (units/hour) per machine and recording of required setup times.
• Recording of scrap rates per processing stage.

Phase 2: Restructuring of Accounting Plan and Cost Centers in the ERP

• Creation of detailed sub-accounts in the accounting system to differentiate direct and indirect operating expenses.
• Configuration of allocation tables in the ERP (cost allocation rules) for transferring expenses from Support to Main Cost Centers.

Phase 3: Digital Collection of Production Data (Shop-Floor Data)

• Installation of simple recording terminals in production to log start/end of production orders, setup times, and machine downtime.
• Linking production personnel work hours to specific Production Orders.

Phase 4: Pilot Operation and Parallel Closing (Dry Run)

• Execution of costing for two consecutive months in parallel with the old system.
• Comparison of results per SKU and identification of variances.

Phase 5: Full Integration and Establishment of Monthly Reports

• Finalization of the new model and training of the finance and commercial departments in interpreting the new Contribution Margin Reports.

Numerical Example: Unveiling Distortions

To understand the impact of the new methodology, a comparison of two illustrative company products before and after the management accounting reform is examined.

Product Data

• Product A (Brand Standard): High-volume branded product (batches of 10,000 units), stable production, minimal setups.
• Product B (Private Label Special): Low-volume product (batches of 1,000 units), special packaging, frequent setups, and strict laboratory control.

Cost Comparison Table per Unit (€/unit)

| Cost Element | Product A (Old) | Product A (New ABC) | Product B (Old) | Product B (New ABC) |

| :--- | :--- | :--- | :--- | :--- |

| Direct Materials (BOM) | €1.20 | €1.20 | €1.10 | €1.10 |

| Direct Labor | €0.30 | €0.22 | €0.28 | €0.45 |

| Manufacturing Overhead (MOH) | €0.60 | €0.38 | €0.55 | €0.92 |

| Setup & Control Costs | (Included) | €0.04 | (Included) | €0.38 |

| Total Manufacturing Cost | €2.10 | €1.84 | €1.93 | €2.85 |

| Selling Price | €2.80 | €2.80 | €2.35 | €2.35 |

| Gross Profit per Unit | +€0.70 (25%) | +€0.96 (34.3%) | +€0.42 (17.9%) | -€0.50 (-21.3%) |

Business Conclusions

1. Product A (Brand): Its actual cost was 12.4% lower than estimated. The company had room to selectively reduce its price by 5-8% to gain market share, while maintaining healthy profitability.
2. Product B (Private Label): The product was being produced at an actual loss of €0.50 per unit. Frequent line changeovers and small batch sizes consumed a disproportionately large share of factory resources.

Strategic Decisions Taken

• Renegotiation of Private Label Contracts: Setting a Minimum Order Quantity (MOQ) of 4,000 units to reduce setup costs per item.
• Charging for Special Specifications: Introduction of a line preparation cost clause for orders below MOQ.
• More Aggressive Commercial Policy for Brand: Leveraging the true gross margin (34.3%) to boost promotional activities at points of sale.

5 Common Mistakes in Management Accounting Implementation for SMEs

Experience from the implementation highlighted five critical errors often observed in Greek businesses:

1. Excessive Complexity in Allocation Systems

Creating dozens of small cost centers and complex mathematical allocation keys often leads to staff fatigue and delays in monthly closing, without offering substantial additional accuracy. The balance between information utility and data collection cost is fundamental.

2. Neglecting Idle Capacity Costs

When production declines due to low demand, allocating all fixed expenses to units produced artificially inflates unit cost. This leads to incorrect pricing decisions during crisis periods, exacerbating sales declines.

3. Static BOMs Without Regular Updates

Production recipes and processing times are not static. Changes in raw material quality, machine wear, or staff turnover modify yields. The lack of periodic variance checks undermines system accuracy.

4. Absence of Financial and Management Accounting Integration

When the costing system operates in independent spreadsheets (Excel) disconnected from the company's General Ledger, discrepancies accumulate, and management receives conflicting profitability reports.

5. Treating Costing as an Exclusively Accounting Task

Management accounting cannot be designed solely by the accounting department. It requires close collaboration with production, maintenance, warehouse, and sales managers to understand the actual physical flows of the factory.

Monthly Reconciliation and Costing Control Checklist

To ensure continuous data reliability, the company adopted the following monthly control process:

• [ ] Inventory Reconciliation: Comparison of physical counts of raw materials, work-in-progress, and finished goods with ERP ledger balances.
• [ ] Open Production Order (WIP) Check: Clearing completed orders and valuing work-in-progress at month-end.
• [ ] Raw Material Variance Analysis: Separation of Purchase Price Variance from Usage Variance.
• [ ] Labor and MOH Variance Analysis: Comparison of budgeted hours/expenses with actuals recorded in the system.
• [ ] Capacity Utilization Rate Calculation: Recording actual operating hours against available normal capacity and isolating any idle capacity costs.
• [ ] General and Management Accounting Reconciliation: Confirmation that total manufacturing expenses from Group 6 equals the sum of cost of goods sold, change in inventories, and idle capacity cost.
• [ ] Gross Margin Flash Report Issuance: Generation of gross margin reports per SKU and customer for management within the first 5 working days of the following month.

Conclusions and Next Steps

The transition from a horizontal allocation to a structured management accounting system and cost centers enabled the company to gain full transparency in its financial data. The elimination of cross-subsidization between products led to rational pricing, renegotiation of commercial terms for Private Label, and an increase in overall operational efficiency.

Production costing is not a static, bureaucratic obligation, but a dynamic tool for business strategy. Every company possesses unique production characteristics, and the cost center structure must be designed based on the actual decision-making needs of management.