Therefore, according to different situations, the answer is as follows:
1, if three lectures are in the same month. If three items of income belong to the same project, the income obtained within one month shall be regarded as one item.
That is, the monthly tax payable is: 6000*( 1-20%)*20%=960.
2. If you teach three times in two months.
Then one month is a lecture, and the tax payable =(2000-800)*20%=240.
One month is the second lecture. Taxable amount =(4000-800)*20%=640
Total tax payable 240+640=880
3. If the three classes are divided into three months, the monthly tax payable =(2000-800)*20%=240.
Total of three months: 240*3=720
Calculation basis: Article 20 of the Regulations for the Implementation of the Individual Income Tax Law of the People's Republic of China: (1) If the income from labor remuneration is a one-time income, the income obtained at one time shall prevail; If it belongs to the continuous income of the same project, the income obtained within one month shall be regarded as one time.