Income and other taxes (Tables)

12 Months Ended

Dec. 31, 2023

Components of income tax (expense) recovery

Income tax (expense) recovery:


For the years ended December 31	2023		2022
Current tax (expense) recovery:
Current period before undernoted items	$	(64,679)	$	(127,254)

Adjustments to prior years including resolution for certain outstanding audits	14,755		(324)
	(49,924)		(127,578)
Deferred tax recovery (expense):
Origination and reversal of temporary differences	46,982		9,589
Adjustments to prior years including resolution for certain outstanding audits	6,904		(400)
Changes in tax rates	(5,828)		(23)
Impact of foreign exchange and other	377		(1,447)
	48,435		7,719
Total income tax expense	$	(1,489)	$	(119,859)

Reconciliation of accounting profit multiplied by applicable tax rates

Income tax expense differs from the amounts that would be obtained by applying the Canadian statutory income tax rate to net income before income taxes as follows:


For the years ended December 31	2023			2022
Income before income taxes	$	285,611		$	582,147
Deduct earnings of associate	(99,466)			(76,938)
	186,145			505,209
Canadian statutory tax rate	24.5		%	24.5		%
Income tax expense calculated at Canadian statutory tax rate	(45,606)			(123,776)
Decrease (increase) in income tax expense resulting from:
Impact of income and losses taxed in foreign jurisdictions	27,260			1,346
Utilization of unrecognized loss carryforwards and temporary differences	7,381			7,077
Impact of tax rate changes	(5,828)			(23)
Impact of foreign exchange	5,287			3,783
Other business taxes	(13,943)			(11,065)
Impact of items not taxable for tax purposes	2,373			3,624
Adjustments to prior years including resolution for certain outstanding audits	21,658			(724)
Other	(71)			(101)
Total income tax expense	$	(1,489)		$	(119,859)

Effect of temporary difference, unused tax losses and unused tax credits and analysis of change in deferred income tax liabilities

The tax effect of temporary differences that give rise to deferred income tax liabilities and deferred income tax assets is as follows:


As at			Dec 31, 2023						Dec 31, 2022
	Net		Deferred tax assets		Deferred tax liabilities		Net		Deferred tax assets		Deferred tax liabilities
Property, plant and equipment (owned)	$	(363,644)	$	(189,646)	$	(173,998)	$	(403,505)	$	(230,756)	$	(172,749)
Right-of-use assets	(35,883)		(28,299)		(7,584)		(33,477)		(26,486)		(6,991)
Repatriation taxes	(109,186)		(7)		(109,179)		(106,989)		—		(106,989)
Other	(31,630)		(9,259)		(22,371)		(78,305)		(60,850)		(17,455)
	(540,343)		(227,212)		(313,131)		(622,276)		(318,092)		(304,184)
Non-capital loss carryforwards	358,774		321,602		37,172		353,986		322,608		31,378
Lease obligations	48,633		37,854		10,779		46,438		35,957		10,481
Share-based compensation	16,391		651		15,740		17,068		2,096		14,972
Other	50,955		19,355		31,600		24,141		3,784		20,357
	474,753		379,462		95,291		441,633		364,445		77,188
Net deferred income tax assets (liabilities)	$	(65,590)	$	152,250	$	(217,840)	$	(180,643)	$	46,353	$	(226,996)

As at December 31, 2023, deferred income tax assets have been recognized in respect of non-capital loss carryforwards generated in the United States. These loss carryforwards expire as follows:


	Dec 31 2023
	Gross amount		Tax effect
Expire
Losses generated in 2015 (expires 2035)	$	282,437	$	62,136
Losses generated in 2016 (expires 2036)	432,581		95,168
Losses generated in 2017 (expires 2037)	234,941		51,687
	949,959		208,991
No expiry
Losses generated in 2019	255,244		56,154
Losses generated in 2020	121,321		26,691
Losses generated in 2023	29,235		6,432
Total non-capital loss carryforwards	$	1,355,760	$	298,267

Analysis of the change in deferred income tax assets and liabilities:


			2023						2022
	Net		Deferred tax assets		Deferred tax liabilities		Net		Deferred tax assets		Deferred tax liabilities
Balance, January 1	$	(180,643)	$	46,353	$	(226,996)	$	(114,536)	$	98,169	$	(212,705)


Deferred income tax recovery (expense) included in net income	48,435		40,159		8,276		7,719		22,578		(14,859)
Deferred income tax recovery (expense) included in other comprehensive income	66,636		65,738		898		(72,440)		(74,394)		1,954
Other	(17)		—		(17)		(1,386)		—		(1,386)
Balance, December 31	$	(65,590)	$	152,250	$	(217,840)	$	(180,643)	$	46,353	$	(226,996)