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 Brahmaputra River has its source in southwest Tibet. It flows there with the name Yarlung Tsangpo River. The river runs across south Tibet to penetrate the Himalayan mountain ranges in huge canyons and subsequently Arunachal Pradesh (India).