The IRS provides more information about this in IRS Publication 542, Corporations. Self Employment Tax. Self-employment tax is social security and Medicare tax for people who are self-employed. This tax applies to those who are sole proprietors with a net profit of $400 or more during the year.
The Mekong River originates at the Lasagongma Spring. The spring is located in the high plateaus of Tibet. It is estimated to be 4,350 kilometers long. 1 person found this useful.
The Mekong river is the 12th longest river in the world with an estimated length of 4,350 km (2,703 miles),. From the Tibetan Plateau this river runs through Chinaâs Yunnan province, Burma, Laos, Thailand, Cambodia and Vietnam.