	Three Months Ended March 31,
	2020			2019
Effective tax rate		27.3	%		28.6	%

The decrease in the effective tax rate for the three months ended March 31, 2020 as compared to 2019 was primarily due to shifts in earnings among the various jurisdictions in which the Company operates. Several additional factors, none of which were individually material, also impacted the rate. The difference between the Company’s effective tax rate as compared to the U.S. statutory federal tax rate of 21.0% was primarily due to the tax impact of permanent differences, state income and foreign withholding taxes, partially offset by the recognition of net tax benefits resulting from foreign tax rate differentials, income earned in certain tax holiday jurisdictions and tax credits.

Prior to December 31, 2017, no additional income taxes have been provided for any reinvested earnings and outside basis differences inherent in the Company’s investments in its foreign subsidiaries as these amounts continue to be indefinitely reinvested in foreign operations. Determining the amount of unrecognized deferred tax liability related to any remaining outside basis difference in these entities is not practicable due to the inherent complexity of the multi-national tax environment in which the Company operates.

The Company is currently under audit in several tax jurisdictions. The Company believes it has adequate reserves related to all matters pertaining to these audits. Should the Company experience unfavorable outcomes from these audits, such outcomes could have a significant impact on its financial condition, results of operations and cash flows.