Domtar (UFS) 10-Q 2015 Q3 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					Nine months ended
	September 30,			September 30,		September 30,		September 30,
	2015			2014		2015		2014
	$			$		$		$
Available earnings:
(Loss) earnings before income taxes		(3	)		95		79		202
Add fixed charges:
Interest expense incurred		21			24		70		73
Amortization of debt expense and discount		4			1		6		3
Interest portion of rental expense (1)		2			2		6		7
Total earnings as defined		24			122		161		285
Fixed charges:
Interest expense incurred		21			24		70		73
Amortization of debt expense and discount		4			1		6		3
Interest portion of rental expense (1)		2			2		6		7
Total fixed charges		27			27		82		83
Ratio of earnings to fixed charges		0.9			4.5		2.0		3.4

⁽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).