Exhibit 12.1

Domtar Corporation

Computation of ratio of earnings to fixed charges

(In millions of dollars, unless otherwise noted)

	Year ended December 30, 2007		Year ended December 31, 2008			Year ended December 31, 2009		Year ended December 31, 2010		Year ended December 31, 2011
	$		$			$		$		$
Available earnings:
Earnings (loss) before income taxes and equity earnings		99		(570	)		490		448		505
Add fixed charges:
Interest expense incurred		166		128			115		144		80
Amortization of debt expense and discount		5		5			10		11		7
Interest portion of rental expense		10		13			12		11		11
Total earnings (loss) as defined		280		(424	)		627		614		603
Fixed charges:
Interest expense incurred		166		128			115		144		80
Amortization of debt expense and discount		5		5			10		11		7
Interest portion of rental expense		10		13			12		11		11
Total fixed charges		181		146			137		166		98
Ratio of earnings to fixed charges		1.5					4.6		3.7		6.2
Deficiency in the coverage of earnings to fixed charges				570

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