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, 2013		September 30, 2012		September 30, 2013		September 30, 2012
	$		$		$		$
Available earnings:
Earnings before income taxes and equity earnings		28		89		1		215
Add fixed charges:
Interest expense incurred		19		20		61		57
Amortization of debt expense and discount		1		1		3		7
Interest portion of rental expense (1)		3		2		8		6
Total earnings as defined		51		112		73		285
Fixed charges:
Interest expense incurred		19		20		61		57
Amortization of debt expense and discount		1		1		3		7
Interest portion of rental expense (1)		3		2		8		6
Total fixed charges		23		23		72		70
Ratio of earnings to fixed charges		2.2		4.9		1.0		4.1

⁽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).