Dive summary:

• Two taxes that go into effect Jan. 1 as part of the ongoing federal healthcare reforms will be hard on contractors, Associated Builders and Contractors says.
• One levy is a 3.8% surtax on investment income going to joint filers who go over $250,000 in modified adjusted gross income, and there are other thresholds for other filers.
• The other levy is an added 0.9% for Medicare, and it applies to wages and self-employment income that is above the same $250,000 mark for married couples filing joint returns.

From the article:

The Internal Revenue Service (IRS) and the Treasury Department issued proposals that will implement two taxes in the health care law on Jan. 1, 2013: the onerous 3.8 percent Net Investment Income Tax and the 0.9 percent Additional Medicare Tax. ...