Exhibit 12.1

Domtar Corporation

Computation of ratio of earnings to fixed charges

(In millions of dollars, unless otherwise noted)

	Year ended December 31, 2008			Year ended December 31, 2009		Year ended December 31, 2010		Year ended December 31, 2011		Year ended December 31, 2012
	$			$		$		$		$
Available earnings:
Earnings (loss) before income taxes and equity earnings		(570	)		490		448		505		236
Add fixed charges:
Interest expense incurred		128			115		144		76		75
Amortization of debt expense and discount		5			10		11		7		8
Interest portion of rental expense (1)		13			12		11		11		11
Total earnings (loss) as defined		(424	)		627		614		599		330
Fixed charges:
Interest expense incurred		128			115		144		76		75
Amortization of debt expense and discount		5			10		11		7		8
Interest portion of rental expense (1)		13			12		11		11		11
Total fixed charges		146			137		166		94		94
Ratio of earnings to fixed charges					4.6		3.7		6.4		3.5
Deficiency in the coverage of earnings to fixed charges		570

(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).