Group 1 - The article discusses the eligibility of collaborative R&D expenses for tax deductions, stating that companies can enjoy additional deductions based on their actual R&D costs incurred in joint projects [3][4]. - It clarifies that rental expenses can be deducted in the current tax year even if not paid, as long as they are recognized as expenses for that year, with specific conditions for documentation [3][4]. - The article emphasizes that cash allowances, such as transportation subsidies, must be included in the taxable income of employees and are subject to personal income tax withholding by the employer [10]. Group 2 - It outlines the responsibilities of employers regarding the accuracy and completeness of reported wage data for social insurance contributions, highlighting potential penalties for late or incorrect submissions [24]. - The article specifies that the wage base for social insurance contributions remains unchanged for the 2026 fiscal year unless there are special circumstances affecting average wage calculations [24]. - It provides guidance for employers on how to handle difficulties in online reporting, including the need for signed confirmation documents to be submitted through designated channels [21][24].