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Income Taxes
 3 Months Ended
Mar. 31, 2024
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
The following table presents our income tax provision and our income tax rate for the three months ended March 31, 2024 and 2023 (in thousands, except percentages):
 
For the three months ended
March 31,
 20242023
Income tax provision$70,567 $41,331 
Income tax rate26.4 %27.0 %
The difference between the U.S. statutory tax rate of 21% and our effective income tax rate for both the three months ended March 31, 2024 and 2023 was primarily a result of state and local income taxes and other permanent book-to-tax differences.
The increase in our income tax provision for the three months ended March 31, 2024, when compared to the three months ended March 31, 2023, was predominantly due to greater income before income taxes. The decrease in our effective income tax rate for the three months ended March 31, 2024 as compared to the three months ended March 31, 2023 was attributable to the impact of favorable discrete tax items during the first quarter of 2024.
As of March 31, 2024 and December 31, 2023, we had no unrecognized income tax benefits.
We file a consolidated federal income tax return including all of our U.S. subsidiaries with the Internal Revenue Service. We additionally file income tax returns with various state, local, and foreign tax agencies. Our income tax returns are subject to audit by various taxing authorities and are currently under examination for the years 2017 through 2021.