Income Tax

9 Months Ended

Sep. 30, 2023

Income Tax Disclosure [Abstract]

Schedule of Effective Income Tax Rate Reconciliation

The effective income tax rate varied from the federal statutory rate due to the following:

	Three Months Ended September 30,
	NW Holdings						NW Natural
In thousands	2023			2022			2023			2022
Income tax at statutory rate (federal)	$	(6,716)		$	(5,533)		$	(6,131)		$	(5,305)
State income tax	(2,742)			(2,376)			(2,633)			(2,306)
Increase (decrease):
Differences required to be flowed-through by regulatory commissions	1,015			1,232			1,018			1,232
Other, net	151			(81)			39			(76)
Total benefit for income taxes	$	(8,292)		$	(6,758)		$	(7,707)		$	(6,455)
Effective income tax rate	25.9		%	25.7		%	26.4		%	25.6		%

	Nine Months Ended September 30,
	NW Holdings						NW Natural
In thousands	2023			2022			2023			2022
Income tax at statutory rate (federal)	$	13,928		$	10,710		$	15,723		$	11,554
State income tax	5,618			4,298			5,990			4,497
Increase (decrease):
Differences required to be flowed-through by regulatory commissions	(2,055)			(2,003)			(2,051)			(2,003)
Other, net	(393)			(370)			(625)			(370)
Total provision for income taxes	$	17,098		$	12,635		$	19,037		$	13,678
Effective income tax rate	25.8		%	24.8		%	25.4		%	24.9		%