Domtar (UFS) 10-Q 2012 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, 2012		June 30, 2011		June 30, 2012		June 30, 2011
	$		$		$		$
Available earnings:
Earnings before income taxes and equity earnings		88		74		126		264
Add fixed charges:
Interest expense incurred		18		19		37		38
Amortization of debt expense and discount		1		2		6		4
Interest portion of rental expense		2		2		4		4
Total earnings as defined		109		97		173		310
Fixed charges:
Interest expense incurred		18		19		37		38
Amortization of debt expense and discount		1		2		6		4
Interest portion of rental expense		2		2		4		4
Total fixed charges		21		23		47		46
Ratio of earnings to fixed charges		5.2		4.2		3.7		6.7