Tax Planning for Professional Corporations
Professional corporation tax planning starts from a simple fact: a professional corporation is a tax structure before it is anything else. It doesn’t change the work you do or your liability for how you do it — what it changes is when you pay tax, how much, and how much control you have over the timing.
That’s the part most owners never get properly advised on. The incorporation itself gets handled by a lawyer in an afternoon. The decisions that determine whether it was worth doing arrive every year afterward, and they’re rarely obvious.
Is incorporating actually worth it?
The honest answer is that it depends on one thing: whether you consistently earn more than you spend.
The core benefit is tax deferral. Income left inside the corporation is taxed at the small business rate rather than your personal rate, and the difference stays invested until you take it out. If you’re leaving meaningful money in the corporation each year, that deferral compounds into a real number. If you draw out everything you earn to fund your lifestyle, you’ve added annual filing costs and administrative work in exchange for almost nothing.
There are secondary benefits worth weighing — access to the lifetime capital gains exemption on an eventual sale, flexibility in the timing of income across years, and the ability to hold investments corporately. None of them rescue the decision if the deferral math doesn’t work.
Before you pay anyone to incorporate, the calculation is worth running against your actual numbers rather than a rule of thumb. That’s a conversation, not a form.
For some professionals the answer is that incorporating isn’t worth it yet, and the honest advice is to wait until the numbers support it.
Professional corporation tax planning: what changes after you incorporate
You now choose how to pay yourself. Salary, dividends, or a mix — and the right answer depends on your RRSP contribution room, your CPP position, and whether you need the cash this year or can leave it invested. It’s an annual decision, not a one-time setup.
You file a T2 corporate return in addition to your personal T1, with its own deadlines and its own consequences for getting it wrong.
Investment income inside the corporation has consequences. Passive investment income above certain thresholds begins reducing your access to the small business deduction federally, which means the corporation’s investments can quietly raise the tax rate on its active income. It’s one of the most common problems we see, and it’s usually invisible until the return is prepared.
Income splitting is narrower than it used to be. The TOSI rules eliminated most casual dividend sprinkling to family members. Some options remain in specific circumstances, but the structures that worked before 2018 largely don’t.
A holding company may make sense, for creditor protection, for separating investments from operations, or for eventual succession. It may also be unnecessary complexity. That depends on your situation.
How we work
You work directly with Robert Occhiuto, CPA, CA. Not an account manager, not a junior with your file on their desk — the person you hired.
Robert holds CPA Canada’s In-Depth Tax certification, the profession’s specialist tax program, and spent over 20 years in public accounting including three years at BDO Canada. The problems above are the ones that program exists to address.
Initial consultations are free, and we’ll tell you within the first conversation whether we’re the right fit.
Not sure your corporation is working as hard as it should?
Book a free consultation. We’ll look at your actual numbers and tell you honestly what’s worth changing — and whether incorporating, or restructuring what you’ve already got, is worth the trouble.