

Businesses that buy merchandise for resale or who use material to produce a product must account for that material before it is delivered to the customer. All of this physical material, including supplies that are part of the final product, is classified as:
The small business entrepreneur needs a basic understanding of inventory accounting:
For tax information regarding inventory, see IRS Publication #334, "Tax Guide for Small Business”
Chapter 2, Accounting Periods and Methods, has a general discussion of inventories, and Chapter 6, How to Figure Cost of Goods Sold, explains how inventory translates into product costing.
For a technical discussion of costing and valuing inventory, see the section on Inventories in IRS Publication #538.
The purpose of inventory control is to organize items so that sufficient units are on hand and readily available to satisfy customer orders within a reasonable timetable, while avoiding the costs of either oversupply or undersupply. Good customer relations are impacted significantly by how well or poorly you meet these challenges.
Having large quantities of goods on-hand would seem to reduce direct production costs by minimizing disruptions caused by shortages, breakdown, changing customer demands, etc. Instead, for many years, many manufacturers have minimized their working capital investment in inventory by emulating the Japanese kanban system with some form of just-in-time method. A just-in-time outlook is applied not only on-hand inventory, but also to all phases of the manufacturing process (product design, Materials Requirements Planning, materials management, production scheduling, quality assurance).
In developing a business plan, the entrepreneur needs to give sufficient attention and devote enough resources to stock control. A successful undertaking – whether manufacturing, retail, or wholesale will benefit significantly from the impact of good inventory management on your customer relationships and your cash flow.
If you have a considerable amount of slow-moving stock on your shelves due to poor planning, you have significant dollars sitting on your shelves not available as working capital. An inventory reserve should be budgeted to provide for the cost of inventory items that may eventually have to be scrapped when they become obsolete due to deterioration from age or material design changes in product requirements.
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