In GvHD, the donated bone marrow or peripheral blood stem cells view the recipientâs body as foreign, and the donated cells/bone marrow attack the body. There are two forms of GvHD: 1  Acute graft versus host disease (aGvHD).
Self-employment tax is a tax consisting of Social Security and Medicare taxes primarily for individuals who work for themselves. It is similar to the Social Security and Medicare taxes withheld from the pay of most wage earners. You figure self-employment tax (SE tax) yourself using Schedule SE (Form 1040). Social Security and Medicare taxes of most wage earners are figured by their employers.
1. Half of Your Self-Employment Tax. When employed, your employer pays half your Medicare and Social Security taxes, and you pay the other half through payroll taxes. When you are self-employed, you must pay all of it, through self-employment tax. However, as your own employer, you are entitled to deduct half of it. Deduction or not, though, self-employment tax can be a big cost for an independent contractor. Knowing how self-employment tax is calculated is important when considering employment versus contracting.