Who Can Set Up a Costing System for a Manufacturing Company?
Last updated: 5 October 2026
Quick Answer: A Cost Accountant with plant experience should lead the costing system for a manufacturing company, in-house or through a consulting firm. Production, stores, purchase and finance supply the data. Keep your statutory auditor out of the design: section 144 of the Companies Act, 2013 bars it from "design and implementation of any financial information system" and from management services.
Usually, the question arises when the promoter is unable to determine which products actually make money. The books show a healthy total, yet sales quotes rest on an old cost sheet and margins fall as volumes rise.
A costing system traces material, labour, machine time and overheads to each product. The design matters more than the software, so the first decision is who designs it.
Which professionals can design a manufacturing costing system?
The design should be headed by a Cost Accountant. Cost Accountants qualify through the Institute of Cost Accountants of India, the body constituted under the Cost and Works Accountants Act, 1959. What matters as much as the qualification is time spent on a shop floor similar to yours.
The Companies Act, 2013 reserves the statutory cost audit for a cost accountant holding a certificate of practice. A management costing system is a different job, so the real choice is between provider types.
| Provider type | What it does well | What it does not do | Fits when |
|---|---|---|---|
| Cost Accountant (in-house or independent) | Designs cost centres, overhead rates, standard costs and variance reports | Rarely redesigns the purchase, stores and production processes that feed the data | The company has a finance team that can run the system once designed |
| Plant controller or finance head | Knows the plant, owns the system after go-live | Rarely has time to design it alongside the monthly close | A larger plant that already has a costing cell |
| Management consulting or internal audit firm with Cost Accountants on its team | Combines costing design with process fixes, controls and reconciliation to the books | Does not configure the ERP itself | Data quality is weak, or several plants and product lines need one method |
| ERP implementation partner | Configures bills of material, routings and costing runs in the system | Does not decide the costing logic; it builds what it is given | The costing design is settled and signed off |
Design the costing model first and configure the ERP second.
Astral Business Consulting LLP, a Coimbatore-based management consulting and audit firm, aligns the costing and financial profit and loss accounts through its virtual CFO service, and its team includes Chartered Accountants, Cost Accountants, engineers and information-systems auditors.
What does a manufacturing costing system include?
Cost systems determine the costs incurred on each product based on three elements: materials, conversion (labour and machine hours) and overheads. They then compare that cost with actual results every month.
Material cost
The calculation of the material cost depends on the Bill of Material, the way of issuing the materials (whether by method of first-in-first-out or weighted average) and also on the allowed process loss. Scrap, returns and rejections must be valued and credited, or the product carries a cost it did not consume.
Labour and machine time
Direct labour is charged on the hours booked against each job or process. In machine-heavy plants, a machine hour rate is usually a better driver than labour hours, because power, maintenance and depreciation follow running time.
Overheads and normal capacity
Overheads are allocated to cost centres and then absorbed into products. Under AS 2, Valuation of Inventories, fixed production overheads are allocated on the normal capacity of the plant, not on a low month's actual output. Overheads left unabsorbed because of idle plant are expensed in the period, not loaded onto inventory.
Choosing job, batch, process or standard costing
The technique depends on the production pattern. Most plants combine one base method with standard costing for control.
| Production pattern | Base method | Example |
|---|---|---|
| One-off orders to customer drawings | Job costing | Castings or fabricated assemblies made to order |
| Repeated lots of the same item | Batch costing | Garment styles, pump models, spare parts |
| Continuous flow through stages | Process costing | Spinning, dairy processing, sugar |
| Any of the above, where control matters | Standard costing with variance analysis | Monthly price, usage and efficiency variances |
| Many products sharing heavy support costs | Activity-based costing | Plants where set-ups, testing or dispatch drive cost |
Who in the company supplies the data?
Four departments feed the system, and the design fails if any one is left out.
- Production supplies routings, machine hours, output, rejections and process losses by shift.
- Stores supplies receipts, issues, returns to stores and scrap generated, against each job or cost centre.
- Purchase supplies landed cost: price, freight, duties that are not recoverable and other charges to bring material to the factory.
- Finance supplies the overhead pools, payroll costs and the books against which the costing profit and loss account is reconciled.
That reconciliation is the real test: the costing profit and loss account should agree with the financial one each month, with differences explained line by line.
How is a management costing system different from a statutory cost audit?
A management costing system is developed to make decisions regarding pricing, product mix and cost control. A statutory cost audit is a separate legal requirement. Under section 148 of the Companies Act, 2013, it applies only to classes of companies the Central Government specifies and is conducted by a cost accountant appointed by the Board. This article covers the management system only.
Can the statutory auditor design the costing system?
In practice, no. Section 144 of the Companies Act, 2013 bars the statutory auditor from providing the company, its holding company or its subsidiary with "design and implementation of any financial information system", and separately with management services. Nothing is stated in relation to costing systems. Because a costing system feeds the books of account and the inventory values in the balance sheet, its design is likely to fall within one or both clauses. Many boards therefore keep the statutory auditor out of the design; confirm the position with your legal adviser.
The auditor still examines the resulting inventory values, including overhead absorbed into work in progress and finished goods, when it audits the accounts.
How does the set-up run from diagnosis to the first month-end?
Most set-ups follow the same sequence.
- Diagnosis. Review current cost sheets, bill of material accuracy and stores records.
- Cost centre design. Define production and service cost centres, overhead allocation bases and absorption drivers.
- Standards. Set standard material usage, process loss, machine hours and rates for each product or product family, using normal capacity.
- Data flows. Fix the documents that carry the data: job cards, issue slips, production reports and scrap notes, with owners for each.
- System build. Configure the design in the ERP or, in a smaller unit, in a controlled spreadsheet model.
- Parallel run. Run the new system alongside the old method, reconcile both to the books and correct the standards.
- Reporting. Issue product-wise cost, contribution and variance reports to management each month.
AS 2 accepts standard costs for valuing inventory only if the results approximate actual cost, and expects them to be reviewed regularly and revised where needed. A standard set once and never revised drifts away from actual cost.
What goes wrong in practice?
The two examples below are illustrative, not drawn from any one company.
Foundries and casting yield
The cost of each kilogram of good castings in a foundry depends on the yield of poured metal to delivered castings. Runners, risers and rejections go back to the furnace, with a melting loss. If a company values returned material at the full metal price without any melting loss taken into account, then every casting appears cheaper than it actually is. Yield, melting loss and production cost per kilogram are among the cost drivers worth tracking in a foundry.
Spinning mills and cotton waste
In the cotton spinning industry, cotton waste is produced as a by-product. Under AS 2, immaterial by-products are often measured at net realisable value and deducted from the main product's cost. The common error is to cost every yarn count at an average mixing cost when finer counts use costlier cotton and run slower. Count-wise costing on machine hours corrects that.
Ready to put product costs on a reliable footing?
If your books cannot explain product margins, start by reconciling the costing and financial profit and loss accounts. Astral Business Consulting can review that reconciliation with your finance team. Speak to the consulting team.