The below article was put out by Realtor.com. Hope you find it helpful….
For the few households that do see a gain of more than the $250,000-$500,000 exclusion (that’s $250,000 for single filers and $500,000 for joint filers), only the amount above the exclusion would be factored into the tax calculation, and that would still only apply to high-income households, which the law defines as single people earning $200,000 a year and joint filers earning $250,000 a year.
So, if you are a households with annual income of $250,000 or more and you earn a gain of more than $500,000 on your house (again, that’s after the $500,000 exclusion), any amount of gain above the exclusion would be plugged into a formula to see if it’s taxable. If it turns out that it’s taxable, then the amount could be subject to the 3.8 percent tax. If the household had a gain of more than $500,000 but only earned $249,000 a year in income, the tax wouldn’t apply.
(Note that these are just hypothetical examples. To know if a case would really be subject to the tax, a professional tax preparer or tax attorney has to look at all the particulars of the tax filer’s case. Only a tax professional is in a position to say the tax is applicable, but the examples cited here could help you get a sense of how the tax works.)
The other thing about the tax worth noting is that, although it takes effect in 2013, any impact on taxes wouldn’t happen until 2014. That’s because the tax filer would do the calculation in 2014 for the 2013 tax year. Because it’s not a tax on a real estate sale but rather on a capital gain, it’s not calculated at the time of an asset sale, whether that asset is a house or something else. It’s calculated at the time the filer figures his or her tax.
This is all explained clearly in the video, so if you have questions about how the tax works, or if you’re still hearing rumors about the tax and you’re not certain of the accuracy of what you’re hearing, the video should prove helpful.
The characterization of the 3.8 percent tax as a tax on real estate is an example of an Internet rumor, says Heather Elias, NAR’s director of social business media. Elias and Linda Goold, NAR’s director of tax policy, sat down for a discussion of how the tax works and how Internet rumors work and you can find their remarks in the 6-minute video below.
3.8% Tax Video