Supply and Use Tables represent economic transactions by economic branches and groups of products.
The Supply Table at basic prices with transition to purchaser’s prices represents the supply of products from domestic production by economic branches and the supply of products from imports. Domestic production is valued at basic prices; imports, cif. The supply of products at basic prices is transferred to purchaser's prices by adding the trade and transport margins and the taxes on products, and by deducting the subsidies on products.
The Use Table at purchaser’s prices shows the use of products as intermediate consumption in the producing industries and as final demand (consumption expenditure, gross investments, exports) on the one hand and the components of value added on the other.
Input-Output Tables are derived analytically from the supply and use tables by positing specific assumptions. Input-Output Tables in the product-by-product version show as intermediate consumption those product inputs which were necessary for manufacturing the entire supply of a particular product obtained through domestic production. Along similar lines, those amounts of value added components are shown which had to be expended in order to manufacture the entire domestic supply of a particular product.
In the Input-Output Tables, the use of products is shown not just as a sum total but also separately by domestically produced and imported products. They form the basis for the analysis of a multitude of economic policy issues. They can be used to derive inverse coefficients and therefore multipliers, which replicate both direct and indirect interconnections between individual homogeneous branches.