The article is devoted to the study of the issue of tax benefits as factors of threat to the tax security of Ukraine in the context of losses of revenue part of local budgets. The military aggression of the Russian Federation against Ukraine has exacerbated the problem, which is due to the existence of an urgent need to develop a modern strategy of state financial and tax policy of Ukraine, which would correspond to the realities of today in ensuring national interests in the field of taxation and contributing to the realization of the goals of balanced financial and economic development, as well as in the field of tax safety in the face of financial decentralization. The war gave impetus to read, consider, interpret, and finally understand the text of the Tax Code of Ukraine in the context of the modern fracture, which occurred in the justice of the Ukrainian community, and therefore it was time to rethink the current tax legislation. Reading this Code, which has more than a 10-year experience of its existence and the 172 edition of its legal norms, it seems that its normative provisions seemed to be stuck in the Soviet mentality of paternalism. Among the main inappropriate features of this marker, especially in line with the Law of Ukraine dated 21.04.2022 No. 2215-IX, are tax benefits, which in the conditions of martial law and post-war restoration become a significant factor that threatens the tax security of Ukraine, After all, they are losses of revenue part of local budgets. In this article, the author substantiates that in the context of martial law and post -war restoration of Ukraine, the tax benefit does not contribute and will not contribute to the balance of budgets and maximizing tax revenues, and the tax benefit, as a factor of loss in the establishment of tax, since the application of tax benefits violates the principles of generality of taxation; equality of all payers before the law; fiscal sufficiency, neutrality of taxation and balance of budget.