Exhibit 12.1

Domtar Corporation

Computation of ratio of earnings to fixed charges

(In millions of dollars, unless otherwise noted)

	Year ended December  31, 2006			Year ended December  30, 2007		Year ended December  31, 2008			Year ended December  31, 2009		Year ended December  31, 2010
	$			$		$			$		$
Available earnings:
Earnings (loss) before income taxes		(556	)		99		(570	)		490		448
Add fixed charges:
Interest expense incurred		—			166		128			115		144
Amortization of debt expense and discount		—			5		5			10		11
Interest portion of rental expense		5			10		13			12		11
Total earnings (loss) as defined		(551	)		280		(424	)		627		614
Fixed charges:
Interest expense incurred		—			166		128			115		144
Amortization of debt expense and discount		—			5		5			10		11
Interest portion of rental expense		5			10		13			12		11
Total fixed charges		5			181		146			137		166
Ratio of earnings to fixed charges					1.5					4.6		3.7
Deficiency in the coverage of earnings to fixed charges		556					570