Actual investment: completed or realized investment after the overall economic reporting period.
Planned inventory investment: inventory investment planned in advance during the whole economic reporting period.
Unplanned inventory investment: the unplanned or unplanned inventory investment actually occurred during the whole economic reporting period.
For example, a clothing export enterprise is expected to sell 654.38+00,000 pieces of clothing next month, of which 3,000 pieces will be produced this month, and these 3,000 pieces will become planned inventory investment. Suppose the enterprise produces 654.38+03000 pieces in the second month, suppose that due to the economic crisis in the importing country, the enterprise only sells 9000 pieces this month, and the enterprise inventory becomes 4000 pieces at this time.
When it is at the level of equilibrium output, the planned inventory investment is generally not zero, while the unplanned inventory investment must be zero. This is because planned inventory investment is a part of planned investment, and equilibrium output is equal to consumption plus planned investment output, so planned inventory is not necessarily zero.
When the planned inventory increases, the inventory investment is greater than zero; When the planned inventory decreases, the inventory investment is less than zero. It should be pointed out that inventory is stock, inventory investment is flow, and inventory investment refers to the change of inventory.
At the level of equilibrium output, planned inventory investment is a part of planned investment, not necessarily zero, but unplanned inventory investment must be zero. If the unplanned inventory investment is not zero, it is not equilibrium output. For example, an enterprise misjudges the situation and produces products that exceed the market demand, leading to unplanned inventory investment.