Exhibit 12.1

Domtar Corporation

Computation of ratio of earnings to fixed charges

(In millions of dollars, unless otherwise noted)

	Year ended December 31,		Year ended December 31,		Year ended December 31,		Year ended December 31,		Year ended December 31,
	2012		2013		2014		2015		2016
	$		$		$		$		$
Available earnings:
Earnings before income taxes and equity earnings		236		72		261		156		157
Add fixed charges:
Interest expense incurred		75		83		99		87		64
Amortization of debt expense and discount		8		4		4		6		2
Interest portion of rental expense (1)		11		11		11		9		9
Total earnings as defined		330		170		375		258		232
Fixed charges:
Interest expense incurred		75		83		99		87		64
Amortization of debt expense and discount		8		4		4		6		2
Interest portion of rental expense (1)		11		11		11		9		9
Total fixed charges		94		98		114		102		75
Ratio of earnings to fixed charges		3.5		1.7		3.3		2.5		3.1

⁽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).