The paper presents the assessment results of the implementation of Poland's national sustainable development goals from 2010 to 2019. For this purpose, a synthetic index (National Sus-tainability Index) was designed using taxonomic methods. The study sought answers to the following questions: What is Poland's general level of accomplishment of sustainable development goals? What were the dynamics of changes in respective years? Which plans require special attention and actions in the coming years? Considering the possible range of the NSI, a significant improvement in accom-plishing Poland's national sustainable development goals was observed in the surveyed years. Never-theless, some areas still need intervention at the decision-making level, contributing to further balancing Poland's economic growth and development paths. The analysis's added value is the syn-thetic measure designed based on 76 specific indicators and the evaluation of sustainable develop-ment in Poland over ten years.