Core Viewpoint - The article discusses various tax regulations and implications for enterprises regarding income recognition, tax deductions, and the treatment of different types of income and expenses under the Corporate Income Tax Law in China [4][9][10]. Tax Regulations Summary - Enterprises selling agricultural products directly do not qualify for tax incentives under agricultural project tax policies [4]. - Income from uncollectible debts that cannot be repaid is considered taxable income under the Corporate Income Tax Law [4][6]. - Donations made by enterprises for poverty alleviation are treated separately from other charitable donations when calculating tax deductions [7]. - Government subsidies and various forms of fiscal funds received by enterprises must be included in the total income for tax purposes, except for certain types of export tax refunds [8]. - Fees returned from individual income tax should be included in the taxable income of the enterprise [9]. - If an enterprise incurs costs and expenses but lacks timely documentation, it can estimate these amounts for quarterly tax prepayments, but must reconcile them during annual tax settlement [10].