Domtar (UFS) 10-Q 2018 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,
	2018		2017		2018		2017
	$		$		$		$
Available earnings:
Earnings before income taxes		51		47		116		72
Add fixed charges:
Interest expense incurred		15		16		31		33
Amortization of debt expense and discount		1		1		1		1
Interest portion of rental expense (1)		2		2		4		4
Total earnings as defined		69		66		152		110
Fixed charges:
Interest expense incurred		15		16		31		33
Amortization of debt expense and discount		1		1		1		1
Interest portion of rental expense (1)		2		2		4		4
Total fixed charges		18		19		36		38
Ratio of earnings to fixed charges		3.8		3.5		4.2		2.9

⁽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).