| Input-Output Table |
| It is one of the crucial tools used to understand the components of GDP. It also shows the interrelationships within the national economy and the interrelationships between various industries, where each activity uses the products of other activity as intermediate consumption or fixed capital formation, while the products of this activity may be used as intermediate or capital uses in other activity. The activities in Input-output tables appear as producer at the row level, and as consumer at the column level. |
| The input-output table consist of four matrices, which are as follows: |
| Intermediate demand matrix: |
| It is concerned with displaying the interrelationships between the various economic activities, through a square matrix that shows the activities as producers in the rows and consumers in the columns. It includes all transactions of domestic and imported goods and services that are used as intermediate consumption in the various economic activities of the production units. Accordingly, each row represents a specific economic activity and the method of distributing the intermediate demand from its output and imports, while the corresponding column for the activity shows what it uses from its own output, the output of other economic activities and imports. |
| Final demand matrix |
| This matrix includes the various goods and services consumed by government, household and non-profit institutions serving households sectors as final consumption expenditure and also includes items of fixed capital formation, change in inventory and exports while displays the interrelationship between economic activities and the components of final demand. |
| Value-added matrix: |
| displays the interrelationship between the components of added value (returns of production factors: wages, operating surplus) with various economic activities. |
| Production matrix |
| It expresses the total production of economic activities horizontally and vertically so that the total inputs for each activity are equal to the total outputs for the same activity. |