In the US I trust they have what is called a Form 1041 (think that is the form), which allows an investor to defer income tax on profit from property sales (e.g. when you dispose of an RTO property to the tenant buyer). That is, as long as the profit is reinvested in another property, then not income tax is paid to the IRS.
To my knowledge, we do not have similar tax shelters in Canada for real estate sales, so any profit from RTO deals would have to be declared as capital gain. In effect, 50% of your profit gets taxed at your personal tax rate. Not sure if this can be avoided, and most of the Canadian rent to own books I have ever read (including the one promoted on the REIN site), do not discuss it in great detail. Rather briefly skim over it, if at all mentioned. I am interested to learn what Canadian RTO investors do to mitigate this tax burden. Certainly those investors who seem to make it their primary RE investment strategy, and who sometimes offer the RTO contracts in the JV section of this forum.
Don't think this answers your question, and not sure as a Canadian you would benefit from this Form 1041 process, but thought I'd throw it out there. Not sure who you pay your income tax to, as a Canadian investing in the US. Might be both IRS and CRA want a chunk of your flesh.