The Greek Independent Authority for Public Revenue (AADE) has released guidance regarding amended tax returns related to retroactive tax adjustments. Taxpayers are required to submit these adjustments by a specific, undisclosed deadline. The AADE is facilitating payment of any resulting tax owed through installment plans of up to 24 months. Citizens are cautioned to carefully review pre-filled tax return codes for accuracy, as errors can occur. The guidance aims to clarify the process for submitting these adjustments and managing associated payments. Further details are available from the AADE to ensure compliance and avoid potential penalties. The initiative addresses previously calculated tax obligations requiring revision.