v3.22.2.2
Income Taxes​
 9 Months Ended
Sep. 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 nine-month period, the estimated annual effective tax rate, before discrete items, applied to ordinary income was 26.7%. This rate differs by 5.7 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, non-deductible costs, and losses in jurisdictions subject to existing valuation allowances, partially offset by non-taxable income and foreign income taxed in lower rate jurisdictions.
For the 2021 nine-month period, the estimated annual effective tax rate, before discrete items, applied to ordinary loss was 17.1%. This rate differs by 3.9 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 27.8% and 21.4% in the 2022 third quarter and nine-month period respectively, and 40.7% and 18.4% in the 2021 third quarter and nine-month period, respectively.
The following table presents the components of (Benefit) Provision for income taxes:
Third quarter ended September 30,Nine months ended September 30,
2022202120222021
Pretax ordinary (loss) income at estimated annual effective tax rate$(24)$5 $31 $(75)
Impact of change in estimated annual effective tax rate on previous quarter’s pretax income
2 7 — — 
Interim period treatment of operational losses in foreign jurisdictions for which no tax benefit is recognized*— — 1 (2)
Discrete items(3)(1)(7)(4)
(Benefit) Provision for income taxes$(25)$11 $25 $(81)
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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.