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, 2012		September 30, 2011		September 30, 2012		September 30, 2011
	$		$		$		$
Available earnings:
Earnings before income taxes		89		162		215		426
Add fixed charges:
Interest expense incurred		20		20		57		58
Amortization of debt expense and discount		1		5		7		9
Interest portion of rental expense		2		2		6		6
Total earnings as defined		112		189		285		499
Fixed charges:
Interest expense incurred		20		20		57		58
Amortization of debt expense and discount		1		5		7		9
Interest portion of rental expense		2		2		6		6
Total fixed charges		23		27		70		73
Ratio of earnings to fixed charges		4.9		7.0		4.1		6.8