Income Taxes	6 Months Ended
Jul. 02, 2017
Income Taxes	Q. INCOME TAXES The effective tax rate for the three months ended July 2, 2017 and July 3, 2016 was 15.4% and 3.2%, respectively. The effective tax rate for the six months ended July 2, 2017 and July 3, 2016 was 12.9% and 0.0%, respectively. The increase in the effective tax rate from the three and six months ended July 3, 2016 to the three and six months ended July 2, 2017 is primarily attributable to the effect of a U.S. non-deductible goodwill impairment charge, a shift in the geographic distribution of income which increased income subject to taxation in the U.S. relative to lower tax rate jurisdictions, decreases in the discrete benefits from tax reserve releases and non-taxable foreign exchange gains and an increase in the discrete benefit from stock-based compensation. The effective tax rates for the three and six months ended July 2, 2017 differed from the expected federal statutory rate of 35% primarily because of the favorable effect of statutory rates applicable to income earned outside the U.S. The tax rates for the three and six months ended July 2, 2017 were also reduced by the benefit from U.S. research and development tax credits, partially offset by additions to the uncertain tax positions for transfer pricing, both of which are included in the projected annual effective tax rate. Discrete tax items recorded in the three and six months ended July 2, 2017 amounted to expense of $0.5 million and benefit of $6.5 million, respectively. The $0.5 million of discrete tax expense recorded in the three months ended July 2, 2017 was primarily composed of $1.0 million of expense related to actuarial gains, $0.7 million of expense from non-taxable foreign exchange loss and $1.0 million of benefit from stock based compensation. The $6.5 million of discrete tax benefit recorded in the six months ended July 2, 2017 was primarily composed of $6.5 million of benefit from stock-based compensation, $1.0 million of expense related to actuarial gains, $0.7 million of benefit related to U.S. research and development tax credits and $0.3 million of expense from non-taxable foreign exchange loss. The effective tax rates for the three and six months ended July 3, 2016 differed from the expected federal statutory rate of 35% as a result of a non-deductible goodwill impairment charge, which reduced the benefit of the U.S. loss before income taxes, and increases in uncertain tax positions for transfer pricing, offset by the effect of lower statutory rates applicable to income earned outside the U.S. and the benefit of U.S. research and development tax credits, all of which were included in the projected annual effective tax rate. Discrete tax benefits recorded in the three and six months ended July 3, 2016 amounted to $4.4 million and $6.9 million, respectively. The $4.4 million of discrete tax benefits recorded in the three months ended July 3, 2016 was primarily composed of $2.6 million of tax reserve releases resulting from the settlement of a U.S. tax audit and $2.2 million from non-taxable foreign exchange gains net of $0.4 million of expense from other discrete tax items. The $6.9 million of discrete tax benefits recorded in the six months ended July 3, 2016 was primarily composed of $3.4 million from non-taxable foreign exchange gains, $2.6 million of tax reserve releases resulting from the settlement of a U.S. tax audit, and $0.9 million related to marketable securities. On a quarterly basis, Teradyne evaluates the realizability of the deferred tax assets by jurisdiction and assesses the need for a valuation allowance. As of July 2, 2017, Teradyne believes that it will ultimately realize the deferred tax assets recorded on the condensed consolidated balance sheets. However, should Teradyne believe that it is more-likely-than-not that the deferred tax assets would not be realized, the tax provision would increase in the period in which Teradyne determined that the realizability was not likely. Teradyne considers the probability of future taxable income and historical profitability, among other factors, in assessing the realizability of the deferred tax assets. As of July 2, 2017 and December 31, 2016, Teradyne had $42.5 million and $39.0 million, respectively, of reserves for uncertain tax positions. The $3.5 million net increase in reserves for uncertain tax positions is primarily composed of additions related to transfer pricing exposures and tax credits. As of July 2, 2017, Teradyne estimates that it is reasonably possible that the balance of uncertain tax positions may decrease approximately $0.8 million in the next twelve months as a result of a lapse of statutes of limitation. The estimated decrease is comprised primarily of reserves relating to tax credits. Teradyne recognizes interest and penalties related to income tax matters in income tax expense. As of July 2, 2017 and December 31, 2016, $0.4 million and $0.4 million, respectively, of interest and penalties were accrued for uncertain tax positions. For the six months ended July 2, 2017, benefit of $0.1 million was recorded for interest and penalties related to income tax items. For the six months ended July 3, 2016, an expense of $0.3 million was recorded for interest and penalties related to income tax items. Teradyne qualifies for a tax holiday in Singapore by fulfilling the requirements of an agreement with the Singapore Economic Development Board under which certain headcount and spending requirements must be met. The tax savings due to the tax holiday for the six months ended July 2, 2017 was $15.1 million, or $0.07 per diluted share. The tax savings due to the tax holiday for the six months ended July 3, 2016 was $30.7 million, or $0.15 per diluted share. The tax holiday is scheduled to expire on December 31, 2020.

Q. INCOME TAXES

The effective tax rate for the three months ended July 2, 2017 and July 3, 2016 was 15.4% and 3.2%, respectively. The effective tax rate for the six months ended July 2, 2017 and July 3, 2016 was 12.9% and 0.0%, respectively.

The increase in the effective tax rate from the three and six months ended July 3, 2016 to the three and six months ended July 2, 2017 is primarily attributable to the effect of a U.S. non-deductible goodwill impairment charge, a shift in the geographic distribution of income which increased income subject to taxation in the U.S. relative to lower tax rate jurisdictions, decreases in the discrete benefits from tax reserve releases and non-taxable foreign exchange gains and an increase in the discrete benefit from stock-based compensation.

The effective tax rates for the three and six months ended July 2, 2017 differed from the expected federal statutory rate of 35% primarily because of the favorable effect of statutory rates applicable to income earned outside the U.S. The tax rates for the three and six months ended July 2, 2017 were also reduced by the benefit from U.S. research and development tax credits, partially offset by additions to the uncertain tax positions for transfer pricing, both of which are included in the projected annual effective tax rate.

Discrete tax items recorded in the three and six months ended July 2, 2017 amounted to expense of $0.5 million and benefit of $6.5 million, respectively. The $0.5 million of discrete tax expense recorded in the three months ended July 2, 2017 was primarily composed of $1.0 million of expense related to actuarial gains, $0.7 million of expense from non-taxable foreign exchange loss and $1.0 million of benefit from stock based compensation. The $6.5 million of discrete tax benefit recorded in the six months ended July 2, 2017 was primarily composed of $6.5 million of benefit from stock-based compensation, $1.0 million of expense related to actuarial gains, $0.7 million of benefit related to U.S. research and development tax credits and $0.3 million of expense from non-taxable foreign exchange loss.

The effective tax rates for the three and six months ended July 3, 2016 differed from the expected federal statutory rate of 35% as a result of a non-deductible goodwill impairment charge, which reduced the benefit of the U.S. loss before income taxes, and increases in uncertain tax positions for transfer pricing, offset by the effect of lower statutory rates applicable to income earned outside the U.S. and the benefit of U.S. research and development tax credits, all of which were included in the projected annual effective tax rate.

Discrete tax benefits recorded in the three and six months ended July 3, 2016 amounted to $4.4 million and $6.9 million, respectively. The $4.4 million of discrete tax benefits recorded in the three months ended July 3, 2016 was primarily composed of $2.6 million of tax reserve releases resulting from the settlement of a U.S. tax audit and $2.2 million from non-taxable foreign exchange gains net of $0.4 million of expense from other discrete tax items. The $6.9 million of discrete tax benefits recorded in the six months ended July 3, 2016 was primarily composed of $3.4 million from non-taxable foreign exchange gains, $2.6 million of tax reserve releases resulting from the settlement of a U.S. tax audit, and $0.9 million related to marketable securities.

On a quarterly basis, Teradyne evaluates the realizability of the deferred tax assets by jurisdiction and assesses the need for a valuation allowance. As of July 2, 2017, Teradyne believes that it will ultimately realize the deferred tax assets recorded on the condensed consolidated balance sheets. However, should Teradyne believe that it is more-likely-than-not that the deferred tax assets would not be realized, the tax provision would increase in the period in which Teradyne determined that the realizability was not likely. Teradyne considers the probability of future taxable income and historical profitability, among other factors, in assessing the realizability of the deferred tax assets.

As of July 2, 2017 and December 31, 2016, Teradyne had $42.5 million and $39.0 million, respectively, of reserves for uncertain tax positions. The $3.5 million net increase in reserves for uncertain tax positions is primarily composed of additions related to transfer pricing exposures and tax credits.

As of July 2, 2017, Teradyne estimates that it is reasonably possible that the balance of uncertain tax positions may decrease approximately $0.8 million in the next twelve months as a result of a lapse of statutes of limitation. The estimated decrease is comprised primarily of reserves relating to tax credits.

Teradyne recognizes interest and penalties related to income tax matters in income tax expense. As of July 2, 2017 and December 31, 2016, $0.4 million and $0.4 million, respectively, of interest and penalties were accrued for uncertain tax positions. For the six months ended July 2, 2017, benefit of $0.1 million was recorded for interest and penalties related to income tax items. For the six months ended July 3, 2016, an expense of $0.3 million was recorded for interest and penalties related to income tax items.

Teradyne qualifies for a tax holiday in Singapore by fulfilling the requirements of an agreement with the Singapore Economic Development Board under which certain headcount and spending requirements must be met. The tax savings due to the tax holiday for the six months ended July 2, 2017 was $15.1 million, or $0.07 per diluted share. The tax savings due to the tax holiday for the six months ended July 3, 2016 was $30.7 million, or $0.15 per diluted share. The tax holiday is scheduled to expire on December 31, 2020.