Exhibit 12.1

Domtar Corporation

Computation of ratio of earnings to fixed charges

(In millions of dollars, unless otherwise noted)

	Three months ended
	March 31, 2012		March 31, 2011
	$		$
Available earnings:
Earnings before income taxes and equity earnings		38		190
Add fixed charges:
Interest expense incurred		19		19
Amortization of debt expense and discount		5		2
Interest portion of rental expense		2		2
Total earnings as defined		64		213
Fixed charges:
Interest expense incurred		19		19
Amortization of debt expense and discount		5		2
Interest portion of rental expense		2		2
Total fixed charges		26		23
Ratio of earnings to fixed charges		2.5		9.3