Agriculture is one of the main branches of the national economy of Ukraine. Accordingly, the logic of accounting rules, connected with the objects of this branch, must be based on the national interests. However, this statement is not always performed. Today, between the national and international accounting rules of biological assets and agricultural products, as the main objects of accounting in agriculture. there is a certain dissonance. It concerns the order of their assessment and affects the taxation of agricultural enterprises. The aim of the article is to highlight those consequences which the valuation of biological assets and agricultural products has for the agrarian enterprises, with its influence on their tax load and the financial situation in general. During the process of researching, a chain of considerations about the tax aspect of the motivation of propaganda of the valuation of the biological assets and agricultural products of agricultural enterprises is presented. It is proved that such an assessment procedure is not profitable for local agricultural producers, because it creates additional financial burdens for them. This reduces their competitiveness and creates benefits for big business. On the basis of the negative impact of the estimation of objects of the alive economy at fair value on the financial condition of agrarian enterprises when they are in the system of taxation of income tax, a vision is expressed regarding the refusal of international rules of accounting of biological assets and agricultural products.