Core Viewpoint - The article provides a detailed guide on how to use the electronic tax bureau app for businesses, specifically focusing on the process of submitting cross-regional tax reports and managing business identities within the app [9][20][23]. Group 1: App Navigation and Identity Management - Users can switch to a business identity by logging into the electronic tax bureau app and navigating to the account center [1][5]. - The app allows users to manage personal and business information, including authorization management and identity switching [6][12]. Group 2: Submitting Cross-Regional Tax Reports - To submit a cross-regional tax report, users can access the "Comprehensive Information" section and select "Information Report and Change" [9][11]. - Users must fill in basic business information and details about the cross-regional business contract before submitting the report [14][17]. Group 3: Report Management Features - The cross-regional tax report module includes options for postponing, modifying, or canceling reports [23]. - Users can reuse existing report information for new submissions, streamlining the process [24][25].

Core Viewpoint - The article discusses the functionalities of the Electronic Taxation Bureau App, specifically focusing on the process of reporting cross-regional tax matters, which can now be done conveniently through the app. Group 1: Cross-Regional Tax Reporting Process - Taxpayers can report cross-regional tax matters through the Electronic Taxation Bureau App when temporarily engaging in construction, installation, or decoration activities across provinces or regions [1]. - The process begins with logging into the app and navigating to the cross-regional tax matter reporting section [2]. - Users can add a new report, with the system automatically filling in the contact person's details, which can be modified if necessary [3]. Group 2: Features and Functionalities - The app supports voice recognition for entering long contract names, enhancing user convenience [4]. - After submission, users receive confirmation of successful reporting, with prompts indicating whether automatic verification has been completed [4]. - Taxpayers can also request extensions for their cross-regional tax reports if needed, with a straightforward process for selecting and confirming the new effective date [5]. Group 3: Modifications and Cancellations - Users can modify their reports if there are changes in tax personnel or other relevant details, with a simple modification process [6]. - If a report is incorrect or a contract is terminated, users can apply to void the report, provided it has not been verified yet [7].