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 rises in the Himalayas in China, in an area called the âthree-rivers areaâ. The other two rivers that rise here are the Yangtze (6,300 km) and Yellow (5,464 km) rivers. In terms of discharge, the Mekong is the 14th largest river in the world.