The real story on the 3,8% tax is not on sale of primary residence.
Its impact will be greater on investment income and sale of investment properties.
If you make 150K and sell a rental property for more than 100K profit, you will be hit.
Currently it hits those making more than 250K. Is this indexed for inflaiton ? Or will it ensnare a bunch of us in 20 years (much like the AMT currently does) because it is not indexed to inflation?