Core Viewpoint - The article emphasizes the importance of tax compliance and provides detailed information on various tax obligations and deadlines for taxpayers in Qingdao [8][10]. Tax Obligations - Taxpayers are required to declare and pay several taxes including value-added tax, consumption tax, urban maintenance and construction tax, education fee surcharge, local education surcharge, cultural industry construction fee, personal income tax, corporate income tax, and others by specific deadlines [8]. - The deadlines for social insurance contributions are also highlighted, with specific dates for different types of taxes [9]. Taxpayer Services - The article mentions the availability of a taxpayer service hotline (12366) for assistance with tax-related inquiries, including issues related to electronic invoicing [12]. - It provides guidance on how to manage permissions for tax-related functions within the electronic tax system, ensuring that authorized personnel can access necessary features [13][14].

Group 1 - The article provides a guide on how to check whether a client's invoice has been selected for tax deduction through the electronic tax bureau or its app [1][9] - The steps to query invoices include logging into the electronic tax bureau, navigating to the invoice query section, and selecting the appropriate query conditions [1][3] - Users can view detailed information about the invoice status by clicking on the "details" link, which shows the current label information of the selected invoice [3][5] Group 2 - The article emphasizes the importance of understanding tax benefits and ensuring compliance to effectively utilize available tax incentives [14][15] - It discusses the differences in tax treatment for domestic and foreign R&D expenses, highlighting the calculation of deductible amounts for both types [14][17] - The article outlines the process for foreign investors to report reinvestment information and the necessary documentation required for tax credit eligibility [17][20]

Group 1 - The article provides detailed instructions on how to revoke the deduction selection of invoices in the new electronic tax bureau [1][2][3] - It outlines the steps for taxpayers to apply for invoice usage needs, including first-time and non-first-time applicants [3][4] - The process for deducting input VAT on agricultural product invoices is explained, including necessary steps and conditions [4] Group 2 - The article mentions the requirement for different types of vehicle sales invoices based on the buyer's purpose, as per the regulations from the National Taxation Administration [4]