(6) Income Taxes

Income taxes included on the consolidated financial statements were as follows for the periods presented (in millions):



	Three Months Ended March 31,
	2018		2017
Current income tax provision	$	1.2	$	0.8
Deferred income tax provision	5.8		2.2
Total income tax provision	$	7.0	$	3.0

The following schedule reconciles total income tax expense and the amount calculated by applying the statutory U.S. federal tax rate to income before income taxes (in millions):



	Three Months Ended March 31,
	2018			2017
Expected income tax provision based on federal statutory rate (1)	$	4.1		$	0.4
State income taxes expense, net of federal tax benefit	0.5			—
Income tax expense from partnership	1.0			0.5
Unit-based compensation	1.6			2.3
Other	(0.2		)	(0.2		)
Total income tax provision	$	7.0		$	3.0


(1)	The statutory federal tax rate for corporations was 21% at March 31, 2018 and 35% at March 31, 2017, respectively.