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Income Taxes
9 Months Ended
Jan. 31, 2021
Income Tax Disclosure [Abstract]  
Income Taxes

9. Income Taxes

The provision for income tax was an expense of $21.2 million and $25.4 million in the three and nine months ended January 31, 2021, respectively, with an effective tax rate of 29.1% and 34.2%, respectively. For the three months ended July 31, 2020, the Company used an actual year-to-date effective tax rate as the best estimate of the annual effective tax rate because small changes in projected income produced significant variations in the estimated annual effective rate and, as a result, a reliable estimate of the annual effective tax rate based on projected income could not be made. For the nine months ended January

31, 2021, however, the Company determined that its estimated annual effective tax rate based on projected income was reliable and applied the generally prescribed method of computing the tax provision for interim periods. In addition to the impact of U.S. state income taxes and the jurisdictional mix of earnings, which generally create variability in our effective tax rate over time, the effective tax rate in the three and nine months ended January 31, 2021 was affected by a tax expense recorded for withholding taxes on inter-company dividends that are not eligible for credit and a shortfall recorded in connection with stock-based awards that vested in the three months ended July 31, 2020. The shortfall is the amount by which the Company’s tax deduction for these awards, based on the fair market value of the awards on the date of vesting, is less than the expense recorded in the Company’s financial statements over the awards’ vesting period.