v3.22.2
Income Taxes​
 6 Months Ended
Jun. 30, 2022
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
Arconic’s year-to-date tax provision is comprised of the most recent estimated annual effective tax rate applied to year-to-date pretax ordinary income or loss. The tax impacts of unusual or infrequently occurring items, including changes in judgment about valuation allowances and effects of changes in tax laws or rates, are recorded discretely in the interim period in which they occur. In addition, the tax provision is adjusted for the interim period impact of non-benefited pretax losses.
For the 2022 six-month period, the estimated annual effective tax rate, before discrete items, applied to ordinary income was 25.6%. This rate differs by 4.6 percentage points from the U.S. federal statutory rate of 21.0% primarily due to estimated U.S. tax on global intangible low-taxed income, the state tax impact of domestic taxable income, and U.S. tax on foreign earnings, partially offset by non-taxable income and foreign income taxed in lower rate jurisdictions.
For the 2021 six-month period, the estimated annual effective tax rate, before discrete items, applied to ordinary loss was 18.6%. This rate differs by 2.4 percentage points from the U.S. federal statutory rate of 21.0% primarily due to estimated U.S. tax on global intangible low-taxed income, U.S. tax on foreign earnings, and non-deductible costs, partially offset by the state tax impact of domestic taxable losses.    
The effective tax rate including discrete items was 24.8% and 24.2% in the 2022 second quarter and six-month period respectively, and 20.2% and 19.7% in the 2021 second quarter and six-month period, respectively.
The following table presents the components of Provision (Benefit) for income taxes:
Second quarter ended June 30,Six months ended June 30,
2022202120222021
Pretax ordinary income (loss) at estimated annual effective tax rate$39 $(100)$53 $(87)
Impact of change in estimated annual effective tax rate on previous quarter’s pretax income
(1)(6)— — 
Interim period treatment of operational losses in foreign jurisdictions for which no tax benefit is recognized*— (2)1 (2)
Discrete items— — (4)(3)
Provision (Benefit) for income taxes$38 $(108)$50 $(92)
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*    The interim period impact related to operational losses in foreign jurisdictions for which no tax benefit is recognized will reverse by the end of the calendar year.