20%. According to my country's tax policy regulations, if the winning amount of a single bet is more than 10,000 yuan (inclusive), you must pay an occasional personal income tax of 20%. "Notice of the Ministry of Finance and the State Administration of Taxation on the Exemption of Personal Income Tax on Individual Sports Lottery Winning Income" Where a single winning income does not exceed 10,000 yuan, personal income tax is temporarily exempted. If the amount exceeds 10,000 yuan, personal income tax shall be levied in full in accordance with tax laws.