Technological quality is an important factor in industry processes. In this study an original index for assessing the technological quality for laser and abrasive water jet cutting was proposed. Developed MCTQ index links the most important features of quality assessment. The carried out tests allowed for the determination of the technological quality assessment based on the evaluation of dimensional and shape accuracy, analysis of the perpendicularity error of the cut edge, measurements of the surface texture parameters, and analysis of microscopic images. The results for both cutting technologies showed that the magnitude of the deviation of the analyzed geometric features increases with the thickness of the sheet. In the case of the laser jet cutting, the occurrence of surface defects were mainly affected by the molten material blow out from the kerf by the associated gas through the upper cutting zone. Straightness deviation, is mainly shape errors in case of the abrasive water jet cutting process. A proposed multiplicative indicator of cutting technological quality provides a relative measure for comparing the results of the cutting process among themselves.