I.G. (ROCKIES) Corp. v. The Queen, 2005 DTC 289, 2005 TCC 51 (Informal Procedure) -- summary under Subsection 161(4.1)

For the purpose of computing interest on late and deficient instalment payments, the taxpayer was entitled to utilize the instalment method in s. 157(1)(a)(iii) (so that its first two monthly instalment payments were relatively small), notwithstanding that this method resulted in larger overall required instalment payments for the year than the method described in s. 157(1)(a)(i). Teskey J. stated (at p. 292) that "if Parliament intended in subsection 157(1) to require a corporation to use only the method that would result in the least total amount of tax being paid, it would have included clear statutory language to that effect in the body of subsection 157(1) itself".