INCOME TAXES

The following table provides a summary of the Company's effective tax rate:



	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
Reported tax rate	2.3	%	19.4	%	(27.6	)%	15.7	%

The Company’s effective income tax rates for the three months ended September 30, 2017 and 2016 were 2.3% and 19.4%, respectively. For the three months ended September 30, 2017, the primary drivers of the lower tax rate are lower income before income taxes compared to the same period in 2016, the jurisdictional mix of income before tax in U.S.-based operations relative to foreign operations, offset by a decrease of $0.4 million in excess tax benefits from stock-based compensation compared to the same period in 2016. The change in jurisdictional mix of income primarily results from significant acquisition and integration costs incurred in the U.S. in 2017. The tax rate for the three months ended September 30, 2016 included a benefit of $0.2 million related to the release of uncertain tax positions.

The Company's effective income tax rates for the nine months ended September 30, 2017 and 2016 were (27.6)% and 15.7%, respectively. For the nine months ended September 30, 2017, the primary drivers of the lower tax rate are lower income before income taxes compared to the same period in 2016, the jurisdictional mix of income before tax in U.S.-based operations relative to foreign operations, and an increase of $3.7 million in excess tax benefits from stock-based compensation for the nine months ended September 30, 2017. The change in jurisdictional mix of income results primarily from significant acquisition and integration costs incurred in the U.S. in 2017.