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Income Taxes
 6 Months Ended
Oct. 31, 2022
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
Our effective tax rate fluctuates based on, among other factors, where income is earned and the level of income relative to tax attributes. The effective tax rate for the three and six months ended October 31, 2022, was 21.0% and 18.4%, respectively, compared with 20.7% and 39.1% for the three and six months ended October 31, 2021, respectively.
The rate for the three months ended October 31, 2022, was equal to the US statutory rate after taking into account the geographic mix of earnings, the impact of US state taxes, and a discrete item relating to restricted stock compensation. The rate for the six months ended October 31, 2022 was lower than the US statutory rate due to the same factors described above.
The rate for the six months ended October 31, 2022, was lower than the rate for the six months ended October 31, 2021, primarily due to an increase in the UK statutory rate announced during the first three months of fiscal 2022 and reflected in the effective tax rate for the six months ended October 31, 2021. The UK enacted legislation on June 10, 2021, that increased its statutory rate from 19% to 25% effective April 1, 2023, resulting in a $20.7 million non-cash deferred tax expense.
Each year we file many tax returns given the number of national, state, and local tax jurisdictions in which we operate. These tax returns are subject to examination and possible challenge by the tax authorities, and positions challenged by the tax authorities may be settled or appealed by us. As a result, there is an uncertainty in income taxes recognized in our financial statements in accordance with accounting for income taxes and accounting for uncertainty in income taxes. The ultimate resolution of such uncertainties, however, is not expected to have a material impact on the results of our operations.