This paper discuss some of aspects about the construction input-output models in the regional level. The methodology adopted consist in the conversion of national to regional coefficients, using estimation techniques. The source of data is the employment and the national matrix 1993. The use of the resultant table is based in the impact of intersectorial linkages, outstanding iron and steel industries, financial services, among others more. However, the structure proposal, close to the impact analysis, to may be only seen as first stage of a most reality tool.