Yes. Gain on the sale of your principal residence is tax free to the extent of your home sale exclusion. The basic exclusion of $250,000 ($500,000 on a joint return) applies only if you owned and used the home for two out of five years preceding the date of sale. However, if you haven’t yet satisfied these tests, you can prorate the exclusion for the period of time you did meet them where the sale is because of a job change. The fact that you continue to work for the same company is irrelevant.
Tax paid by self-employed persons to finance Social Security coverage. In 2007, there are two rates. A 12.4% rate applies to a taxable earnings base of $95,700 or less and a 2.9% rate applies to all net earnings.