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Income Taxes
6 Months Ended
Oct. 31, 2020
Income Tax Disclosure [Abstract]  
Income Taxes

9. Income Taxes

The provision for income tax was an expense of $12.9 million and $4.2 million in the three and six months ended October 31, 2020, respectively, with an effective tax rate of 31.4% and 294.5%, 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 six months ended October 31, 2020, however, the Company determined that its estimated annual effective tax rate based on projected income was reliable and returned to 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 six months ended October 31, 2020 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.