The revaluation model is an accounting approach that allows companies to periodically adjust the carrying amount of certain assets to reflect their fair value instead of maintaining historical cost. This method is especially significant for fixed assets, such as property, plant, and equipment, where values can fluctuate due to market conditions. By using the revaluation model, organizations can provide a more accurate representation of their asset values in financial statements, which enhances transparency and can impact financial ratios and investment decisions.