Exhibit 12.1

Domtar Corporation

Computation of ratio of earnings to fixed charges

(In millions of dollars, unless otherwise noted)

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