Income Taxes	6 Months Ended
Jul. 29, 2017
Income Taxes
Income Taxes	8. Income Taxes Our effective income tax rate increased to 32.5% for the second quarter of 2017 from 25.9% for the second quarter of 2016 primarily due to higher U.S. income as compared to income earned in foreign jurisdictions this year compared to last year. Our effective income tax rate increased to 35.0% for the first six months of 2017 from 30.4% for the first six months of 2016 primarily due to higher U.S. income as compared to income earned in foreign jurisdictions this year compared to last year. In addition, the effective income tax rate for the first six months of 2017 was impacted by $2.2 million of tax deficiencies related to the vesting of stock-based awards resulting from the adoption of new accounting guidance related to stock-based compensation. See Note 11 for additional information. Additionally, we are currently undergoing several federal, foreign and state audits; however, we currently do not believe these audits will result in any material charge to tax expense in the future.

Income Taxes

6 Months Ended

Jul. 29, 2017

8. Income Taxes

Our effective income tax rate increased to 32.5% for the second quarter of 2017 from 25.9% for the second quarter of 2016 primarily due to higher U.S. income as compared to income earned in foreign jurisdictions this year compared to last year.

Our effective income tax rate increased to 35.0% for the first six months of 2017 from 30.4% for the first six months of 2016 primarily due to higher U.S. income as compared to income earned in foreign jurisdictions this year compared to last year. In addition, the effective income tax rate for the first six months of 2017 was impacted by $2.2 million of tax deficiencies related to the vesting of stock-based awards resulting from the adoption of new accounting guidance related to stock-based compensation. See Note 11 for additional information.

Additionally, we are currently undergoing several federal, foreign and state audits; however, we currently do not believe these audits will result in any material charge to tax expense in the future.