1. If an individual’s monthly salary income is higher than (or equal to) the prescribed expense deduction, the calculation formula for personal income tax is:

1. If the bonus includes personal income tax:

Tax payable = one-time annual bonus obtained in the current month × applicable tax rate - quick calculation deduction

Case 1: Xiao Wang, an employee of a certain enterprise, received a one-time annual bonus of 24,000 yuan, except Assuming that the quotient after 12 months is 2,000 yuan (24,000÷12), the applicable tax rate is 10%, the quick calculation deduction is 25 yuan, the tax payable = 24,000 × 10%-25 = 2,375 yuan.

2. Bonus does not include personal income tax:

According to the "Notice of the State Administration of Taxation on Issuing (Provisions on Several Issues in the Collection of Personal Income Tax)" (Guo Shui Fa [1994] No. 089 ) According to the provisions of Article 14, the specific method for converting the one-time bonus for the whole year excluding tax into the bonus including tax for calculating personal income tax is:

(1) According to the one-time bonus for the whole year excluding tax Divide the income by the quotient of 12 and find the corresponding applicable tax rate A and quick calculation deduction A;

(2) Annual one-time bonus income including tax = (Full-year one-time bonus income excluding tax A quick calculation deduction number A)÷(1-applicable tax rate A);

(3) According to the quotient of the annual one-time bonus income including tax divided by 12, re-search the applicable tax rate B and quick calculation deduction Number B;

(4) Tax payable = annual one-time bonus income including tax × applicable tax rate B, quick deduction number B.

Case 2: Xiao Wang, an employee of a certain company, received a one-time annual bonus of 24,000 yuan excluding tax. First, convert the annual one-time bonus without tax into a bonus with tax, that is, divide 24,000 yuan by 2,000 yuan after 12 months as the quotient. It is found that the applicable tax rate is 10%, and the quick calculation deduction is 25, which is converted into a bonus including tax. The annual one-time bonus of tax is (24,000-25) ÷ (1-10%) = 26,638.89 yuan. Secondly, determine the applicable tax rate and quick calculation deduction for the annual one-time bonus including tax, that is, divide the annual one-time bonus including tax by 2219.91 yuan after 12 months (26638.89÷12) as the quotient, and determine the applicable tax rate as 15 %, the quick calculation deduction is 125 yuan. Third, calculate the tax payable, tax payable = 26638.89 × 15%-125 = 3870.83 yuan.

2. If an individual’s monthly salary income is less than the prescribed deduction amount, the applicable formula is as follows:

1. If the bonus includes personal income tax:

Tax payable = (one-time annual bonus obtained in the current month - the difference between the monthly salary income and the expense deduction) × applicable tax rate - quick calculation deduction

Case 3: An enterprise Employee Xiao Wang received a one-time bonus of 24,000 yuan for the whole year, and his monthly salary income was 1,200 yuan. First, determine the applicable tax rate and quick calculation deduction for the annual one-time bonus, that is, divide the difference between the annual one-time bonus minus the personal salary and expense deduction amount by 1967.67 yuan after 12 months {[24000-( 1600-1200)]÷12} is the quotient, the applicable tax rate is determined to be 10%, and the quick calculation deduction is 25 yuan. Second, calculate the tax payable, tax payable = [24000-(1600-1200)]×10%-25=2335 yuan.

2. Bonuses do not include personal income tax:

(1) The difference between the annual one-time bonus income excluding tax and the individual’s monthly salary and expense deductions Divide by the quotient of 12 to find the corresponding applicable tax rate A and quick calculation deduction A;

(2) Annual one-time bonus income including tax = (Annual one-time bonus income excluding tax - Quick calculation deduction number A) ÷ (1 - applicable tax rate A);

(3) Re-search the applicable tax rate B and quick calculation deduction number according to the quotient of the annual one-time bonus income including tax divided by 12 B;

(4) Tax payable = annual one-time bonus income including tax × applicable tax rate B, quick deduction number B.

Case 4: Xiao Wang, an employee of a certain company, received a one-time annual bonus of 24,000 yuan excluding tax, and his monthly salary income was 1,200 yuan. First, convert the one-time annual bonus without tax into a bonus with tax, that is, subtract the difference between the monthly salary income and the expense deduction from 24,000 yuan and divide it by 1967.67 yuan after 12 months {[24000-(1600 -1200)]÷12} is the quotient, the applicable tax rate is 10%, and the quick calculation deduction is 25. The annual one-time bonus including tax is (24000-25)÷(1-10%) = 26638.89 yuan. Second, determine the applicable tax rate and quick calculation deduction for the annual one-time bonus including tax, that is, divide the annual one-time bonus including tax by 2219.91 yuan after 12 months (26638.89÷12) as the quotient, and determine the applicable tax rate as 15%, the quick calculation deduction is 125 yuan. Third, calculate the tax payable, tax payable = 26638.89 × 15%-125 = 3870.83 yuan.

Let me tell you by taking the bonus issued by the company as an example. If you win the lottery, the calculation method is the same as the example here to calculate the tax. Note: the "applicable tax rate" involved in the example The "quick calculation of deductions" is related to the corresponding bonus amount and is not static. You can look for a book on personal income tax, which has this quick calculation table.