An APA may be amended by agreement between the parties in the manner prescribed by the tax code. An APA may also be terminated prematurely by agreement between the parties or by judicial decision. The amendments introduced in the draft law recently adopted by the Greek parliament address the current needs and challenges in transfer pricing, given that the overall environment of the Apa in Greece is strengthened and taxpayers benefit from an instrument that offers even greater stability and security for their intercompany transactions. From the above, it is clear that this important bill has changed radically since the beginning of the year as a result of active discussions. However, it is possible that even more important changes will be made within the walls of the Duma after discussion. For example, the draft law submitted to the State Duma still does not allow for the conclusion of an APA (1) for a transaction that is not yet underway at the time of the agreement, but which will be completed in the future (2), in order to cover a later period, until the beginning of the year in which the app application was filed. which would be in line with international practice and would be of great benefit to the economy. Controlled transactions for which a taxpayer has asked the tax authority to enter into an APA can only be subject to transfer pricing after the tax authorities have made a decision on the APP application. On February 26, 2019, the U.S. Advance Pricing and Mutual Agreement Program (APMA) released an Excel-based financial model that intends to use the program to review certain applications from the Advance Pricing Agreement (APA). The stated objective of the model is to enable the Internal Revenue Service (IRS) to “better understand the contributions of controlled taxpayers to proposed secure transactions, including the respective contributions of each subject controlled to the exercise of the significant economic risks associated with proposed secure transactions.” 1 To this end, the Functional Cost Diagnostic Model (FCD MODEL) records, identifies, organizes and analyzes the costs incurred by each controlled subject for covered transactions.