Advantage of a Professional Corp.- Bulletin IT-533 - mortgage interest deductibility


Dear Mr. Ingram,

I’ve read your Nov 2001 newsletter (along with several e-mail answers) and
you have consistently maintained that one should “kill” their professional
corporation in order to utilize the “cash flow dam” method of the Smith

However, there is seems to be an equally simple way to use the exact same
strategy using a corporation and avoid “killing” it. Many professionals are
incorporated in order to tax defer profits at the small business rate. As
such they have accumulated funds in their company and so it may make no
sense to “kill” the company and pay-out the retained earnings (potential big
tax hit). If there are retained earnings, then the company has to stay alive
and legal/accounting fees will have to be paid anyway.

Consider the following:

1. Professional Corp. sets up 2 bank accounts
2. All revenue is deposited into A/C #1 on and all expenses are paid from AC
3. Shareholder borrows from personal LOC and lends to AC #2 as a
shareholders loan. Interest on LOC is tax deductible since loan can be shown
to clearly pay for operating expenses
4. Company re-pays the shareholders loan from AC #1 which he/she then uses
to pay down mortgage

This is pretty simple to set-up and is no more complicated than the Nov 2001
set-up. Furthermore, if there are multiple shareholders (e.g. husband/wife)
in different income tax brackets, the corporation provides the flexibility
as to which shareholders can contribute towards expenses and thus deduct the
LOC interest. This could be done for example if husband own 100% of class A
shares & wife 100% of class B shares.

In conclusion, simple bookkeeping can ensure that incorporated professionals
can still enjoy tax deferral/small business taxation and still effectively
employ the cash dam strategy in order to make their mortgages tax deductible
without “killing” their professional corporations. Do you agree ?

david ingram replies:

Nope! Unfortunately, Bulletin IT-533 specifically wipes it out.

Read it at:

You will find that it is very specific. If you borrow money for a specific
investment (loan to your corporation), when the investment is repaid or
sold, the results must be specifically used to pay back that loan or the
interest is not deductible.

Read the disappearing source rules in paragraph 19 of the bulletin and
section 20.1 of the act.

Although in the normal flow of a business, the disappearing source rules are
ignored because of commingling of funds, in your case, you are setting up
specific accounts to prove when the money goes in and by the same accounts
PROVING that the loan has been repaid by the business.

I do not think it would fly and unfortunately, if you tried it and then were
turned down, the tax and interest would be very punitive as there would
likely be three year's worth at that time..


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