山西：自然人电子税务局（网页端）个人所得税经营所得汇算清缴操作步骤

Group 1 - The article discusses the tax obligations for individual business owners, sole proprietors, and partners in China, specifically focusing on the requirement to file personal income tax for business income and the process for annual reconciliation [2][13]. - Taxpayers must calculate personal income tax on an annual basis and submit tax returns to the tax authority within fifteen days after the end of each month or quarter, with annual reconciliation due by March 31 of the following year [2][19]. - The article provides a step-by-step guide for taxpayers to navigate the online tax filing system, including entering investment unit information, income and cost details, and confirming the submitted information [5][7][10]. Group 2 - The article outlines specific procedures for submitting tax returns, including the need for multiple partners in a partnership to file separate tax forms and the requirement for those earning income from multiple sources to report to the tax authority where they manage their business [13][24]. - It emphasizes the importance of using the Natural Person Electronic Tax Bureau for tax filing and provides instructions for taxpayers to access various tax-related services [3][6][26]. - The article also mentions the timeline for tax filing, indicating that the annual reconciliation for personal income tax will take place from March 1 to June 30 of the following year, with options for advance booking available [24][21].