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INCOME TAXES
9 Months Ended
Sep. 30, 2021
Income Tax Disclosure [Abstract]  
INCOME TAXES INCOME TAXES
Our operations are conducted through various subsidiaries in a number of countries throughout the world. We have provided for income taxes based upon the tax laws and rates in the countries in which operations are conducted and income is earned.
We operate in three jurisdictions, Canada, Australia and the U.S., where statutory tax rates range from 21% to 30%. Our effective tax rate will vary from period to period based on changes in earnings mix between these different jurisdictions. 
We compute our quarterly taxes under the effective tax rate method by applying an anticipated annual effective rate to our year-to-date income, except for significant unusual or extraordinary transactions. Income taxes for any significant and unusual or extraordinary transactions are computed and recorded in the period in which the specific transaction occurs. As of
September 30, 2021 and 2020, Canada and the U.S. were considered loss jurisdictions for tax accounting purposes and were removed from the annual effective tax rate computation for purposes of computing the interim tax provision.

Our income tax expense for the three months ended September 30, 2021 totaled $1.8 million, or 63.4% of pretax income, compared to tax expense of $0.2 million, or 2.4% of pretax income, for the three months ended September 30, 2020. Our effective tax rate for both the three months ended September 30, 2021 and 2020 was impacted by considering Canada and the U.S. loss jurisdictions that were removed from the annual effective tax rate computation for purposes of computing the interim tax provision. Under ASC 740-270, "Accounting for Income Taxes," the quarterly tax provision is based on our current estimate of the annual effective tax rate less the prior quarter's year-to-date provision.
Our income tax expense for the nine months ended September 30, 2021 totaled $2.4 million, or (39.0)% of pretax loss, compared to a benefit of $8.5 million, or 6.1% of pretax loss, for the nine months ended September 30, 2020. Our effective tax rate for the nine months ended September 30, 2021 and 2020 was impacted by considering Canada and the U.S. loss jurisdictions. Our effective tax rate for the nine months ended September 30, 2021 was impacted by an increase in the valuation allowance related to the impairment of land in Australia. Although Australia was not considered a loss jurisdiction for the nine months ended September 30, 2020, our effective tax rate was impacted by utilization of deferred tax assets and a release of the corresponding valuation allowance in Australia, resulting in no income tax expense for that jurisdiction. Additionally, our effective tax rate for the nine months ended September 30, 2020 was impacted by a deferred tax benefit of $9.0 million, offset by a valuation allowance of $0.1 million against the Canadian net deferred tax assets.