Taxes

Effective Tax Rate

The Company estimates its annual effective tax rate at the end of each fiscal quarter. The Company’s estimate takes into account estimations of annual pre-tax income, the geographic mix of pre-tax income and the Company’s interpretations of tax laws and possible outcomes of audits.

The following table presents the provision for income taxes and the effective tax rates:



	Three Months Ended April 30,						Six Months Ended April 30,
	2015			2014			2015			2014
	(in thousands)
Income before income taxes	$	83,884		$	68,059		$	160,499		$	139,243
Provision (benefit) for income tax	$	28,288		$	4,742		$	39,714		$	8,230
Effective tax rate	33.7		%	7.0		%	24.7		%	5.9		%

The Company’s effective tax rate for the three and six months ended April 30, 2015 is lower than the statutory federal income tax rate of 35% primarily due to the lower tax rates applicable to its non-U.S. operations and U.S. federal and California research tax credits, partially offset by state taxes, non-deductible stock compensation, and the integration of acquired technologies.

The Company's effective tax rate increased in the three and six months ended April 30, 2015, as compared to the same periods in fiscal 2014, primarily due to the integration of acquired technologies, partially offset by the reinstatement of the U.S. federal research tax credit in the first quarter of fiscal 2015. The effective tax rate for the three and six months ended April 30, 2014 was lower due to the tax benefits of settlements with the Taiwan tax authorities for fiscal 2010 and 2009 and with the IRS for fiscal 2012.

On December 19, 2014, the president signed into law the Tax Increase Prevention Act of 2014 which reinstated the research tax credit retroactive to January 1, 2014 and extended the credit through December 31, 2014. As a result of the new legislation, the Company recognized a benefit in the first quarter of fiscal 2015 related to ten months of fiscal 2014 as well as a benefit to the annual effective tax rate for two months of fiscal 2015. During fiscal 2015 the Company estimates the benefit of the reinstatement of the research tax credit to be approximately $12.4 million.

The Company’s total gross unrecognized tax benefits at April 30, 2015 are $129.9 million exclusive of interest and penalties. If the total gross unrecognized tax benefits at April 30, 2015 were recognized in the future, approximately $129.9 million would decrease the effective tax rate.

The timing of the resolution of income tax examinations is highly uncertain as well as the amounts and timing of various tax payments that are part of the settlement process. This could cause large fluctuations in the balance sheet classification of current and non-current assets and liabilities. The Company believes that in the coming twelve months, it is reasonably possible that either certain audits will conclude or the statute of limitations on certain state and foreign income and withholding taxes will expire, or both. Given the uncertainty as to ultimate settlement terms, the timing of payment and the impact of such settlements on other uncertain tax positions, the range of the estimated potential decrease in underlying unrecognized tax benefits is between $0 and $37 million.

IRS Examinations

In the first quarter of fiscal 2014, the Company reached final settlement with the Examination Division of the IRS on the remaining fiscal 2012 issues and recognized approximately $10.0 million in unrecognized tax benefits.

Non-U.S. Examinations

In the first quarter of fiscal 2015, the Company reached final settlement with the Taiwan tax authorities for fiscal 2012, with regard to certain transfer pricing issues. As a result of the settlement the Company recognized approximately $1.1 million in unrecognized tax benefits.

In the second quarter of fiscal 2014, the Company reached settlements with the Taiwan tax authorities for fiscal 2010 and 2009, with regard to certain transfer pricing issues. As a result of the settlements and the application of the settlements to other open fiscal years, the Company's unrecognized tax benefits decreased by $5.1 million. The net tax benefit resulting from the settlements and the application to other open fiscal years was $3.9 million.