Domtar (UFS) 10-Q 2017 Q2 Quarterly report

Exhibit 12.1

Domtar Corporation

Computation of ratio of earnings to fixed charges

(In millions of dollars, unless otherwise noted)

	Three months ended				Six months ended
	June 30,		June 30,		June 30,		June 30,
	2017		2016		2017		2016
	$		$		$		$
Available earnings:
Earnings before income taxes		47		24		72		25
Add fixed charges:
Interest expense incurred		16		15		33		31
Amortization of debt expense and discount		1		—		1		1
Interest portion of rental expense (1)		2		2		4		4
Total earnings as defined		66		41		110		61
Fixed charges:
Interest expense incurred		16		15		33		31
Amortization of debt expense and discount		1		—		1		1
Interest portion of rental expense (1)		2		2		4		4
Total fixed charges		19		17		38		36
Ratio of earnings to fixed charges		3.5		2.4		2.9		1.7

⁽¹⁾ Interest portion of rental expense is calculated based on the proportion deemed representation of the interest component (i.e 1/3 of rental expense).