1 The fixed assets mentioned in the tax law refer to the non-monetary assets held by an enterprise for producing products, providing services, leasing or operating management, which have been used for more than 12 months, including houses, buildings, machines, machinery, means of transportation and other equipment, appliances and tools related to production and business activities. In the accounting department. According to the Fixed Assets Standard, fixed assets refer to tangible assets with the following characteristics: (1) held for producing goods, providing services, renting or managing; (2) Its service life exceeds one fiscal year. From the definition of fixed assets, the requirements of tax law are basically consistent with the provisions of accounting standards. 2. The accounting treatment of initial direct expenses is consistent in the tax law, but the tax law does not recognize the results of present value measurement, which will lead to complex tax adjustment. Fixed assets obtained through donation, investment, exchange of non-monetary assets, debt restructuring, etc. , based on the fair value of assets and related taxes and fees paid. Generally speaking, the tax law does not recognize the book value measurement model of non-monetary assets exchange without commercial substance in accounting. 3. When calculating the taxable income, it is allowed to deduct the depreciation of fixed assets calculated by the enterprise according to regulations. Depreciation deduction is not allowed for the following fixed assets: unused fixed assets other than houses and buildings; Fixed assets leased by way of operating lease; Fixed assets leased in the form of financial lease; Fixed assets that have been fully depreciated and continue to be used; Fixed assets unrelated to business activities; Separate valuation of land recorded as fixed assets; Other fixed assets that are not allowed to deduct depreciation. In tax law, unused fixed assets other than houses and buildings are not allowed to be depreciated, but in accounting, unused fixed assets other than houses and buildings must also be depreciated. The reason for calculating depreciation in accounting is that losses will occur even if it is not used, and the reason for refusing depreciation deduction in accounting is that it has nothing to do with production and business activities. In line with the scope of depreciation deduction, the tax law also requires enterprises to calculate depreciation from the month after the fixed assets are put into use; Depreciation of fixed assets that have ceased to be used shall stop from the next month of the month of cessation of use. This provision is quite different from accounting. In order to simplify accounting, the accounting standards stipulate that the newly added fixed assets in the current month will be depreciated from next month, and the depreciation will not be accrued in the current month. Fixed assets reduced in the current month will still be depreciated in the current month, and will not be depreciated from next month. Accounting only emphasizes increase or decrease, while tax law emphasizes putting into use and stopping using. The root of the difference is that the tax law stipulates that unused fixed assets other than houses and buildings shall not be deducted for depreciation.