Lizzie,
Maybe you had better read the draft ruling too. It is not just the intention to make a profit it is whether anyone else would make a profit as well without investing on the same terms as the unit holder. To quote the first post
"Many of the trust arrangements we have examined involve cases where:
the taxpayer's entitlement to trust income is determined by the exercise of the trustee's discretion, rather than by the rights attaching to the units - meaning that the interest is not deductible, or
the taxpayer's entitlement to trust income and/or capital is disproportionately small compared to their contribution to the trust - meaning that the interest is not deductible in full and some apportionment of the interest deduction would be required. "
My interpretation of the draft is if there is a chance someone other than the unit holder will benefit in an uncommercial fashion then the interest deduction has to be reduced at best and in some cases no interest deduction at all.
The draft doesn't bother with whether there will one day be a profit to the unit holder it looks at who else is likely to benefit from the borrowed money as well and then requires apportionment of the interest. In otherwords if it is a hybrid ie more than just fixed rights to the unit holders then interest needs to be apportioned. If it is not a hybrid you have to ask yourself why did you enter into the arrangement anyway?
It is only a draft and they intend to give us more information in the new year.