Agreed: "not exactly."
Mine, in 2011, was 19.84%
Does that include your part of SS and medicare? I found a federal "effective" rate calculator online that said 18% based on 200k income, but that was JUST federal income tax.
I calculated that my tax rate went up a lot in 2013, since I'm retired and living on investment income. Not that I thought that dividend tax cut was a good idea in the first place, but it's still ... annoying.