Bill of Materials (BOM) Preparation in India

In India, BOM errors are not the result of inaccurate data input but come from the process itself, where there is lack of precise material definitions, invalid yield assumptions, and incorrect quantity calculations that fail to consider process-dependent scrap rates, losses due to moisture, or formulation tolerance margins. At IMARC Engineering, BOMs are designed on the basis of engineering fundamentals, whereby material quantities are calculated through validated process parameters, machine-dependent yields, and formulations. These BOMs, formulated using engineering fundamentals, eliminate the inherent quantity errors associated with procurement shortages, production bottlenecks, and surplus stocks, ensuring consistency at any production scale.

Regulatory documentation needs associated with BOMs for manufacturing processes in India reach well beyond merely listing the material quantities required. Pharmaceutical BOMs need to conform to Drug Master File documentation, Schedule M quality parameters, and CDSCO licensing documentation. Food processing BOMs have to be in accordance with FSSAI ingredient documentation and also facilitate HACCP and FSSC 22000 quality system documentation. BOMs related to chemical products should have references related to REACH pre-registration for export supply chain purposes and material classification as per the MSDS. IMARC Engineering ensures that all regulatory documentation requirements are integrated within BOM structure right at the beginning, so that the BOM becomes not only an operational procurement document but also fulfils regulatory and quality system documentation needs without the necessity of having different documentation.

HSN code classification in accordance with the bill of materials is an imperative in India that has significant financial implications. Any inaccuracies in classification will lead to discrepancies in the input tax credit, attract attention from the tax authorities, and even be subjected to hefty financial penalties that far outweigh the initial costs of proper HSN code classification. IMARC Engineering classifies each item on the bill of materials by assigning its HSN code according to its technical classification per the GST tariff nomenclature. In case of any ambiguities in material classification, IMARC Engineering uses the CBIC classifications and AAR decisions.

PLI Schemes in the pharmaceuticals industry, food processing, specialty chemical manufacturing, advanced chemistry cells, and other industries have minimum domestic value addition and localization requirements which need to be adhered to in order to meet eligibility criteria for incentive payments. IMARC Engineering helps set up BOMs for manufacturers participating in the PLI Scheme such that each item within the BOM is either made locally or procured from abroad and the domestic value addition criteria are clearly identified. The structure also enables us to retain the necessary documentation related to component sourcing which otherwise will require reconstruction at every cycle of PLI scheme compliance evaluation.

The value of BOM is not realized if the bill of materials only exists in a tabular form either in spreadsheets or as documents in PDF formats since BOM should be integrated within the manufacturing entity’s ERP or production scheduling application in order to enable material requirement planning, purchase orders, inventory postings, and cost of production analysis. The engineering firm, IMARC Engineering, constructs BOM templates in such a manner that they comply with the requirements of ERPs, including SAP, Oracle, Microsoft Dynamics, Tally Prime, and others used by Indian manufacturers, and ensures that the BOM templates uploaded into ERPs are valid. Such an approach helps to avoid inconsistencies between the BOMs stored independently and within ERP systems.

Single-tier bill-of-material structures, which provide information on the raw materials required to produce finished products, are not sufficient for firms with multi-level production systems, internal sub-assembly procedures, or intermediate formulation activities. This is due to their inability to facilitate material requirements planning at intermediate levels of production and cost attribution to individual sub-processes of production. IMARC Engineering offers multi-tier bill-of-material solutions that capture the entire structure of the production process, from raw materials to finished goods, thus facilitating effective material requirements planning, proper work-in-progress accounting, and proper cost attribution to sub-processes of production.