1, in terms of tax rate design, the United States adopts an excessive progressive tax rate, and the corresponding taxable income is between $654.38 million and $335,000, plus 5% surcharge; For companies with taxable income exceeding USD 6,543,805,000, the additional tax to be paid is 3% of the taxable income exceeding USD 6,543,805,000 or 3% of the taxable income exceeding USD 6,543,805,000, whichever is less. Companies mainly engaged in providing services are only taxed at the rate of 35%; Income from foreign trade activities in the United States is taxed at the progressive rate of corporate income tax in the United States.

2. The corporate income tax rates in China are different. According to the provisions of the enterprise income tax law, the enterprise income tax is subject to the proportional tax rate of 33%; Considering that there are many small enterprises and the profit level is low, the tax law also stipulates two kinds of caring tax rates, that is, for enterprises whose annual taxable income is less than 30 thousand yuan (including 30 thousand yuan), the income tax is temporarily reduced at the rate of 18%; Enterprises whose annual taxable income is less than 654.38 million yuan (including 654.38 million yuan) to 30,000 yuan shall be subject to income tax at the rate of 27% temporarily. Where an enterprise incurred losses in the previous year, it can make up for it with the taxable income of that year, and the applicable tax rate shall be determined according to the taxable income after making up the losses.

For example, the original value of a fixed asset is $80,000, the estimated residual value is $2,000, and the service life is 5 years. China and the United States use the straight-line depreciation method and the double declining balance depreciation method respectively, and the tax rates are 33% and 34% respectively.

Table 3

Total number of years in the first, second, third, fourth and fifth years.

Undepreciated profit (USD) 80000100000 90000 80000 80000 430000

China: Use the straight line method.

Annual depreciation =1/5× (80000-2000) =15600 USD.

The profit for the first year =80000- 15600=64400 USD.

Income tax payable =64400×33%=2 1252 USD.

Similarly, the income tax payable in the second year, the third year, the fourth year and the fifth year is $27,852, $24,552, $2 1252 and $2 1252 respectively.

Then the accumulated income tax for five years = 21252+27852+24552+21252+21252 =11665438 USD.

United States: Double declining balance method is adopted.

Depreciation in the first year = 2/5× 80,000 = 32,000 USD.

Profit = 80,000-32,000 = 48,000 USD.

Income tax payable = 48,000× 34% =16320 USD.

Depreciation in the second year = 2/5× (80000-32000) =19200 USD, and profit = 100000- 19200 USD.

Taxable income =80800×34%=27472 USD.

Depreciation in the third year = 2/5× (80000-32000-19200) =11520 USD.

Profit = 90000-11520 = $78480.

Taxable income =78480×34%=26683.2

The fourth and fifth years are changed to straight-line depreciation, and the depreciation amount is:

(80000-32000-19200-11520-2000) ÷ 2 = $7640.

Profit in the fourth year =80000-7640=72360 USD.

Income tax payable = 32,360× 34% = 24,602.4 USD.

The fifth year is the same.

Accumulated income tax payable for five years:16320+24742+26683.2+24602.4+24602.4 =119680 USD.

After playing so much, I still don't understand.