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Income Taxes
9 Months Ended
May 31, 2020
Income Taxes [Abstract]  
Income Taxes

Note 13. Income Taxes

The Company uses an estimated annual effective tax rate, which is based on expected annual income, statutory tax rates and tax planning opportunities available in the various jurisdictions in which the Company operates, to determine its quarterly provision for income taxes. Certain significant or unusual items are separately recognized in the quarter in which they occur and can be a source of variability in the effective tax rates from quarter to quarter.

The provision for income taxes was 23.9% and 19.8% of income before income taxes for the three months ended May 31, 2020 and May 31, 2019, respectively. The increase in the effective income tax rate from period to period was primarily due to a decrease in earnings from foreign operations resulting in a decrease in the net benefit received from the application of the GILTI / FDII calculation.

The provision for income taxes was 19.1% and 18.8% of income before income taxes for the nine months ended May 31, 2020 and May 31, 2019, respectively. The increase in the effective income tax rate from period to period was primarily due to a decrease in the net benefit received from the application of GILTI / FDII calculation, partially offset by an increase in excess tax benefits from settlements of stock-based equity awards during the first six months of fiscal year 2020 that are recognized in the provision for income tax.

The Company is subject to taxation in the U.S. and in various state and foreign jurisdictions. The Company is currently under examination by various state taxing authorities. Due to expired statutes, the Company’s federal income tax returns for years prior to fiscal year 2017 are not subject to examination by the U.S. Internal Revenue Service. Generally, for the majority of state and foreign jurisdictions where the Company does business, periods prior to fiscal year 2016 are no longer subject to examination. Estimated unrecognized tax benefits related to income tax positions may be affected by the resolution of tax examinations or expiring statutes of limitation within the next twelve months were not significant. Audit outcomes and the timing of settlements are subject to significant uncertainty.