Group 1 - The article clarifies that personal investors in sole proprietorships cannot deduct personal consumption expenses from their business income for tax purposes [3][4] - It states that sole proprietorships with annual taxable income not exceeding 2 million yuan do not qualify for the half-rate personal income tax policy applicable to individual businesses [3][4] - The article emphasizes that sole proprietorships holding equity investments must use the accounting method for personal income tax assessment, rather than the simplified method [3][4] Group 2 - It mentions that small-scale taxpayers can choose to waive their tax exemption on certain sales to issue special VAT invoices [10][11] - The article outlines that from January 1, 2026, small-scale taxpayers selling used fixed assets will be taxed at a reduced rate of 2% instead of the standard 3% [17]