Income Taxes

9 Months Ended

Sep. 30, 2023

Income Tax Disclosure [Abstract]

Income Tax Disclosure

Income taxes

During the three and nine months ended September 30, 2023, Income before income taxes was $91.5 million and $402.0 million respectively, while income tax expense was $13.3 million and $92.3 million, respectively. The effective tax rate was 14.6 percent and 23.0 percent for the three and nine months ended September 30, 2023, respectively. The effective tax rate for the current three and nine month periods differed from the 2023 statutory rate of 24.8 percent primarily due to tax credits and other permanent tax benefits, partially offset by tax expense recorded related to basis differences in the Company's retained Knife River shares.

During the three and nine months ended September 30, 2022, Income before income taxes was $46.6 million and $175.2 million respectively, and income tax expense was $4.2 million and $28.4 million, respectively. The effective tax rate was 9.0 percent and 16.2 percent for the three and nine months ended September 30, 2022, respectively. The effective tax rate differed from the 2022 statutory rate of 24.8 percent due to tax credits and other permanent tax benefits.