Once your practice income is steady, the big levers are incorporating (a medicine professional corporation), paying yourself through the right mix of salary and dividends, and investing surplus inside the corporation. Done well and reviewed yearly, these can save a physician a serious amount of tax.
Physicians spend a decade-plus learning medicine and roughly zero minutes learning tax — which is completely reasonable, and also why so many leave money on the table. You don’t need to become an accountant. You just need to know which levers exist so you can ask the right questions. Here are the ones that matter most, in plain English.
Should you incorporate?
For most established physicians, incorporating through a medical professional corporation is the foundational move. The value is simple to state: it lets you leave money you don’t need to live on inside the corporation, taxed at a lower rate, so more stays invested and working. It’s usually worth it once your income comfortably exceeds your personal spending. The honest answer for your situation comes from running your actual numbers — but if you’re earning well and haven’t looked at this, look.
How you pay yourself is a real decision
Once incorporated, you choose how to draw income — salary, dividends, or a blend. It’s not a coin flip; each has knock-on effects for retirement savings room, government contributions, and your overall tax. The right mix is personal and it can shift year to year, which is why it should be reviewed annually, not set once and forgotten. This one decision, made well every year, quietly adds up.
Investing inside your corporation
Money you leave in the corporation can be invested, but how you do it matters — there are rules that can claw back some of the corporation’s advantages if you’re not careful. This is very doable and very worth it; it’s just a place to have a professional in your corner rather than winging it off a forum post.
The stuff people get wrong
A few recurring ones: assuming all medical income is HST-free (mostly, but not always); missing the retirement-savings angles available to incorporated professionals; and treating the personal and corporate returns as two separate universes when they should be planned together. Individually small; together, meaningful.
Keep it simple, keep it reviewed
You don’t need an exotic structure. Most physicians are well served by getting the fundamentals right — incorporate at the right time, pay yourself sensibly, invest surplus properly, and revisit it each year as your income and life change. The magic isn’t complexity; it’s consistency and a professional who actually knows the medical context.
That’s the world we work in every day, alongside diagnostic clinics and allied-health practices. If you’d like your own numbers looked at — no jargon, no pressure — book a consult and we’ll tell you honestly what’s worth doing and what isn’t.
FAQ
When should a physician incorporate?
Generally once your income comfortably exceeds what you need to live on, so you can leave surplus in the corporation at a lower tax rate. The exact timing comes from running your numbers.
Salary or dividends — which is better?
Usually a mix, and it can change year to year. Each affects your retirement savings room and government contributions differently, so it’s worth reviewing annually with your accountant.
Is all medical income HST-exempt?
Most core medical services are exempt, but not everything — it depends on the service and who’s paying. It’s worth having your specific mix reviewed.
Can I invest money inside my professional corporation?
Yes, and it’s often smart — but there are rules that can reduce the benefit if it’s not handled well, so it’s a good place to have professional guidance.
Do you coordinate my corporate and personal taxes?
Yes — they should be planned together, not in isolation. That coordination is where a lot of the savings actually happens.
