服务月送实惠，个体户明规则——这些发票“雷区”踩不得！

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].