The purpose of the article is to provide a justification of new accounting policy and unified methodology for assessing the value of agricultural land in financial statements and statistics as a factor in capitalization of the national wealth of Ukraine and ensuring its sustainable development and proper representation in the world information space. Research methods. In the research process were used the following scientific methods: statistical methods; methods of questioning and generalization for determining components of improving the accounting policy for agricultural land; analysis and synthesis for assessing the effectiveness of the current procedure for determining fair value of land assets of agricultural enterprises. Estimation of land price, the right of permanent use and right to lease land for its presentation on the balance is performed using the methodology of expert monetary assessment, in particular methods of direct and indirect capitalization of rent and net operating income. Research results. There was substantiated mission of an institute of accounting aimed at preserving and increasing the national wealth of Ukraine and ensuring its sustainable development. Elements of scientific novelty. The accounting policy and evaluation of agricultural land were developed and tested, which ensures capitalization of the national wealth and representation of the natural and economic potential of Ukraine on the international scene. Practical significance. Estimated efficiency of implementation of the proposed accounting policy and estimation of agricultural lands is USD 11.95 billion as an increase of the national wealth of Ukraine presented in the system of national accounts. Tabl.: 5. Figs.: 1. Refs.: 51