Publication date: February 2, 2026

The valuation of assets and liabilities is one of the fundamental mechanisms of financial accounting, determining the recognition of economic events in financial statements. Through the valuation process, economic events are translated into measurable monetary terms, enabling the preparation of a balance sheet, profit and loss account, and other elements of a financial statement. Both the Polish Accounting Act and international financial reporting standards are based on the assumption that there is no single universal valuation method. The accounting system allows for the use of diverse valuation bases, depending on the type of asset, its purpose, and the expected realization of future economic benefits or liabilities. This leads to a mixed valuation model, in which cost-based and market-based solutions coexist. Against this backdrop, changes in international accounting regulations, including the annual amendments to IFRS and IAS effective from 2026 and the introduction of the new IFRS 18 standard, are particularly significant. Although these regulations do not directly change the basis for the valuation of assets and liabilities, they do impact the presentation and disclosure of the effects of adopted valuation decisions. The purpose of this article is to discuss the principles of valuation of assets and liabilities in accounting, taking into account the regulations of the Accounting Act and international financial reporting standards, as well as to present the significance of the changes in force from 2026 for financial reporting.

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