Interest owing to the taxpayer as a result of the acceptance by his co-shareholders of his offer to sell his shares in a corporation, was found to be received by him at the end of 1990, when he accepted the related cheque as payment (as evidenced by his deposit of the cheque at a branch of his bank that, unlike his local branch, was open that day), rather than early in 1991 when the amount was credited by the bank to his account at the local branch.