Core Viewpoint - The article discusses the special regulations regarding the deduction of business entertainment expenses before corporate income tax, highlighting common misconceptions and specific provisions for different types of enterprises [2]. Group 1: General Deduction Rules - Business entertainment expenses can be deducted at 60% of the incurred amount, with a maximum limit of 5‰ of the annual sales revenue, which includes deemed sales revenue as per relevant regulations [2]. - All enterprises must adhere to these basic principles when calculating corporate income tax, with specific exceptions and common misunderstandings addressed in the article [2]. Group 2: Accounting Treatment - Business entertainment expenses should be recorded in expense accounts, and the deduction limit is calculated in the year the expenses are incurred [3]. - The Sichuan Tax Bureau clarified that business entertainment expenses cannot be classified under construction in progress according to accounting standards, and they must generally be accounted for as management or sales expenses [3]. Group 3: Special Provisions for Start-up Period - During the start-up phase, business entertainment expenses can be directly deducted at 60% as part of the start-up costs, which can be deducted in the year of commencement or amortized over several years [3][4]. - If included in start-up costs, the total deductible business entertainment expenses can exceed the 5‰ revenue limit [4]. Group 4: Investment Enterprises - For investment enterprises, the calculation of the deduction limit for business entertainment expenses includes income from dividends, bonuses, and capital gains, which are not considered regular sales revenue [5]. - These enterprises can use the income from investments to calculate the deduction limit, choosing the lower amount between 60% of the expenses and the calculated limit [5]. - There is ambiguity in defining "investment enterprises," leading to potential discrepancies in implementation, thus it is advisable for companies to consult tax authorities and maintain proper documentation [5].