Income Taxes

3 Months Ended

Mar. 31, 2013

Income Taxes

Income Taxes

Note 12— Income Taxes

The following table shows the changes in our provision for income taxes (in millions) and our consolidated effective federal and state income tax rates for the applicable periods ended March 31,:

	Three Months Ended						Twelve Months Ended
	2013			2012			2013			2012
Consolidated provision for income taxes	$	7.5		$	6.2		$	35.4		$	33.3
Consolidated effective federal and state income tax rates	37.2		%	38.7		%	37.7		%	38.6		%

The effective income tax rate for the three and twelve month periods ended March 31, 2013 is lower than comparable periods in 2012 primarily due to higher equity AFUDC income in 2013 compared with 2012.

We do not have any unrecognized tax benefits as of March 31, 2013. We did not recognize any significant interest or penalties in any of the periods presented. We do not expect any significant changes to our unrecognized tax benefits over the next twelve months.