Stock Management - Retail Supply Chain - Weighted Average Price Method

Weighted Average Price Method

The calculation can be done for different periods. If the calculation is done on a monthly basis, then it is referred to the periodic method. In this method, the available stock is calculated by:

ADD Stock at beginning of period
ADD Stock purchased during the period
AVERAGE total cost by total qty to arrive at the Average Cost of Goods for the period.

This Average Cost Price is applied to all movements and adjustments in that period.
Ending stock in qty is arrived at by Applying all the changes in qty to the Available balance.
Multiplying the stock balance in qty by the Average cost gives the Stock cost at the end of the period.

Using the perpetual method, the calculation is done upon every purchase transaction.

Thus, the calculation is the same based on the periodic calculation whether by period (periodic) or by transaction (perpetual).

The only difference is the 'periodicity' or scope of the calculation. - Periodic is done monthly - Perpetual is done for the duration of the purchase until the next purchase

In practice, the daily averaging has been used to closely approximate the perpetual method. 6. Bottle neck method ( depends on proper planning support)

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