They take 6,000 yuan as their income, and then multiply it by the 3% tax rate to get your tax 180 yuan. At present, the threshold of People's Republic of China (PRC) State Taxation Bureau is 5000-20000 yuan per month. What is the threshold set by Guangdong Provincial State Taxation Bureau? The tax you will deduct in the future is at least the threshold stipulated by the Guangdong Provincial State Taxation Bureau multiplied by the 3% collection rate. Invoice tax is calculated as follows: the total invoice amount is divided by (1+3%) and then multiplied by 3%. If the tax calculated by the total invoice amount is greater than the withholding tax, you have to pay the difference tax, otherwise, you only pay the withholding tax.