. as a result , the company was entitled to a preferential enterprise income tax rate of 15% ( 15 % ) . the company did not recognize a benefit related to this china tax incentive in 2017 . the tax reduction as the result of the tax holidays for 2017 was $ 16.9 million and 2016 was $ 6.4 million . the impact of the tax holiday in 2015 was similar to 2016 . a reconciliation of the statutory u.s . federal income tax rate to the company 2019s effective income tax rate is as follows: .