Q.

I have a line of credit, which in total has my residence, some business finance and an investment property loan. My salary gets paid into the same account and all expenses are paid from the account. By analysis, I can clearly apportion between personal, business and investment property. Is this sufficient for tax claiming or does the line of credit have to have segmented or separate accounts?

Your accountant will be able to give you a definitive answer, but I am concerned that you could find yourself with problems because it would appear to be extremely difficult to apportion the interest eg. if the home loan was $179,000 and the investment loans totalled $331,000 how could you identify the interest savings made by a deposit of say $5,000. And what would be the effect on the interest on the different loans if you made a withdrawal of $4,000 for living expenses? My advice is to keep the investment loans strictly separate from the non-deductible housing loan.