这个信息你确认了吗？12月1日已开始，一定记得办！操作步骤

Group 1 - The article emphasizes the importance of confirming the individual income tax special additional deductions for the year 2026, which must be done annually from December 1 to December 31 of the previous year [2][3]. - Taxpayers can confirm their special additional deduction information through the personal income tax app, where they can easily transfer their 2025 deduction information to 2026 if there are no changes [3][4]. - The six categories of special additional deductions include housing rent, children's education, continuing education, major medical expenses, housing loan interest, and elderly care [3][4]. Group 2 - The article outlines the process for taxpayers to confirm their deductions, including the option to modify or cancel any information if necessary [4]. - It highlights that if taxpayers are filling out the special additional deduction for the first time, they can directly select the relevant items in the app to complete their submission [4]. - The article also mentions that over 1 billion people are expected to participate in the confirmation process, indicating a significant engagement with the tax system [3].