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.
What are the main tributaries of the Mekong river? If considered by contribution to Mekong, the main tributaries would be Se San river, Se Kong River in Cambodia (about 25%), Chi-Mun River in Thailand (About 8%) and Nam Ngum a â¦ nd Nam Cadiam in Laos (about 10%).here is the source of the river Mekong? The Mekong River is the 10th longest river of the wolrd. From its geographic source in Mt. Jifu of Qinhai province of China to the mouth in South China Sea, the total length o â¦ f the Mekong River is 4,909 km or 3,051 miles.