J.L. Guay Ltée v. MNR, 71 DTC 5423, [1971] CTC 686 (FCTD), aff'd 73 DTC 5374, [1973] CTC 506 (FCA), aff'd 75 DTC 5094, [1975] CTC 97 (SCC) -- summary under Paragraph 18(1)(e)

A general building contractor in accordance with the terms of its contracts with its subcontractors withheld 10% of the amounts invoiced on a monthly basis to it by its subcontractors. The amounts withheld became due 35 days after a completion certificate was issued by the architect. Since it was far from certain that the withheld amounts would be paid in full (or even in part) to the subcontractors, they were not deductible in the year of withholding.