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Income Taxes
 3 Months Ended
Mar. 31, 2022
Income Tax Disclosure [Abstract]  
Income Taxes Income TaxesWe compute and apply to ordinary income an estimated annual effective tax rate on a quarterly basis based on current and forecasted business levels and activities, including the mix of domestic and foreign results and enacted tax laws. The estimated annual effective tax rate is updated quarterly based on actual results and updated operating forecasts. Ordinary income refers to income before the provision for income taxes excluding significant, unusual or infrequently occurring items. The tax effect of an unusual or infrequently occurring item is recorded in the interim period in which it occurs as a discrete item of tax.
The following table summarizes the provision for income taxes:
For the Three Months Ended March 31,
20222021
(Dollars in thousands)
Provision for income taxes$19,797 $16,257 
Pre-tax income143,980 115,056 
Effective tax rates13.7 %14.1 %
The effective tax rate for the three months ended March 31, 2022 was 13.7%. This rate differs from the U.S. statutory rate of 21% primarily due to worldwide earnings from various countries taxed at different rates, which is partially offset by the net combined impact related to the U.S. taxation of global intangible low taxed income ("GILTI") and Foreign Tax Credits ("FTCs").
The effective tax rate for the three months ended March 31, 2021 was 14.1%. This rate differs from the U.S. statutory rate of 21% primarily due to worldwide earnings from various countries taxed at lower rates, the Section 250 Deduction and FTCs offset by the net increase related to GILTI.
The provision for income tax increased from $16.3 million for the three months ended March 31, 2021 to $19.8 million for the three months ended March 31, 2022. This change is primarily related to an increase in pre-tax income, partially offset by a decrease in the effective tax rate due to the mix of worldwide earnings from various countries taxed at different rates and U.S. taxation of GILTI.
As of March 31, 2022, we had unrecognized tax positions of $0.1 million, which, if recognized, would have an immaterial, favorable, impact on our effective tax rate.
We file income tax returns in the U.S. federal jurisdiction, and various state and foreign jurisdictions. All U.S. federal tax years prior to 2018 are generally closed by statute or have been audited and settled with the applicable domestic tax authorities. Other jurisdictions are generally closed for years prior to 2016.
We continue to assess the realization of our deferred tax assets based on determinations of whether it is more likely than not that deferred tax benefits will be realized through the generation of future taxable income. Appropriate consideration is given to all available evidence, both positive and negative, in assessing the need for a valuation allowance. Examples of positive evidence would include a strong earnings history, an event or events that would increase our taxable income through a continued reduction of expenses, and tax planning strategies that would indicate an ability to realize deferred tax assets. In circumstances where the significant positive evidence does not outweigh the negative evidence in regards to whether or not a valuation allowance is required, we have established and maintained valuation allowances on those net deferred tax assets.