The Enterprise theory
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Purchasing and inventory management
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PURCHASE
•one of the basic corporate functions
•it is implemented by all types of businesses
•ensures trouble-free operation of production and non-production processes in the company
•organizationally secured by the purchasing department

Stages of the buying process
·purchase initiation
·specification of requirements (necessity, nature, scope)
·market analysis of possible suppliers
·selection of a suitable supplier
·wording of the order
·implementation of logistics activities associated with the entry of the delivery into the company
·delivery payment
·supplier performance evaluation

STOCKS
•current assets of the business
•the result of a purchase or business activity
•they always bind themselves with funds
•To have or not to have? Can you do business without inventory?

Types of supplies
I. CLASSIFICATION OF STOCKS BY SPECIES
·production stocks:
oraw materials, basic material, operating substances, spare parts, packaging
otangible assets whose consumption period is less than 1 year
·work in progress inventory
·stocks of finished goods
·goods

II. BREAKDOWN OF STOCKS ACCORDING TO FUNCTIONAL COMPONENTS
·current stock – to ensure expected consumption in the period between two deliveries
·insurance stock – to cover possible deviations in supplies or consumption
·technological stock – if the material needs to be modified before it is released for consumption,
its amount results from the production technology

·seasonal ( occasional ) supply – compensates for expected fluctuations in supply or consumption
·speculative stock - to achieve an extraordinary profit by a suitable purchase
·emergency stock - ensures the survival of the business in the event of unforeseen events
·

III. BREAKDOWN OF STOCKS ACCORDING TO CAPACITY CALCULATIONS
•minimum stock – stock status at the moment before a new delivery
•maximum stock – the highest stock level reached at the time of a new delivery
•immediate stock :
oactual physical inventory - the actual stock level in the warehouse
odisposition stock – actual stock reduced by already applied requirements for delivery (goods ready
for dispatch)
obalance stock – disposition stock increased by the size of stock deliveries ordered but not yet
received (material on the way)







The hotel is planning shopping activities for the next month of November. On average, 600 liters of
juice are consumed in the hotel per day. Juices are stored in 0.5 l bottles. At the end of
November, the hotel plans to have a stock of 2,500 bottles. At the beginning of November, this
stock will be 2,600 bottles. How many bottles of juice must the hotel order for November?


Resources = Needs
No. inventory + purchase (delivery) = consumption + ending inventory
2600 + x = 36000 + 2500
Purchase = 35,900 pcs