Domtar (UFS) 10-Q 2011 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, 2011		June 30, 2010		June 30, 2011		June 30, 2010
	$		$		$		$
Available earnings:
Earnings before income taxes		74		26		264		110
Add fixed charges:
Interest expense incurred		19		67		38		97
Amortization of debt expense and discount		2		3		4		5
Interest portion of rental expense		2		2		4		5
Total earnings as defined		97		98		310		217
Fixed charges:
Interest expense incurred		19		67		38		97
Amortization of debt expense and discount		2		3		4		5
Interest portion of rental expense		2		2		4		5
Total fixed charges		23		72		46		107
Ratio of earnings to fixed charges		4.2		1.4		6.7		2.0