Why physician advice differs from generic owner advice
The standard owner-manager answer, take a blend, integration keeps the totals close, is true for physicians too, but three structural facts change how the blend gets set. First, an Ontario MPC cannot sit under a holding company, so surplus has nowhere to go but inside the MPC itself; over a career that builds a corporate investment portfolio, and a portfolio makes the refundable-tax mechanics below a central part of your compensation math rather than a footnote. Second, the tax on split income rules shut the family-dividend door harder for professional corporations than for ordinary businesses, so your blend is really about you, not your household's share register. Third, physicians start earning late and often peak hard, which compresses the savings years and raises the stakes on getting the retirement vehicles, RRSP, IPP, corporate portfolio, sequenced properly.
It helps to name what the decision is not. It is not a search for the secretly cheaper route: a dollar of practice profit that reaches your pocket as salary and a dollar that travels through corporate tax and comes out as a dividend land within a few points of each other, by legislative design. Physicians who switch routes chasing that gap buy disruption for pennies. The real money is in the second-order effects, what each form of payment enables, funds or forfeits, and that is where the rest of this page lives.
One assumption to fix before the mechanics: the amount comes before the form. Your draw should be set by what your household needs plus your deliberate personal savings, with the remaining profit left in the corporation on purpose. Physicians who default to draining the corporation, in either form, quietly give up the deferral that justified incorporating at all. If that trade-off is not yet settled for you, start with whether incorporation is worth it, because the blend question assumes the surplus question is answered.
What salary buys a physician, and what it costs
Salary is the route that builds entitlements. It creates RRSP contribution room, it buys pensionable CPP earnings, and it establishes the T4 history that an individual pension plan is later built on, which matters because an IPP in your late forties and fifties can shelter meaningfully more than an RRSP, but only for someone with salary on the record. Salary also reads cleanly to outsiders: banks underwriting a mortgage, insurers setting disability coverage, and anyone else who wants tidy evidence of steady personal income prefer a T4 to a dividend history that requires explanation.
The costs are real but mostly administrative. Salary requires a payroll account, monthly or quarterly source deduction remittances on a schedule the CRA enforces with penalties, and a T4 each February. The corporation pays the employer half of CPP on top of your own half, and both halves together are a meaningful annual outlay that dividend-payers avoid. Whether avoiding CPP is a win is a genuine question rather than an obvious one: the contributions buy an indexed, guaranteed lifetime pension with survivor benefits, which is expensive to replicate with private investments, and we price that trade for clients rather than assuming either answer.
For most physicians the practical salary question collapses to a simple target: pay at least enough salary to generate the RRSP room you intend to use, and to keep CPP and any future IPP on track, then stop. Salary beyond what the entitlements and the household require just accelerates personal tax without buying anything further. The exceptions are physicians deliberately smoothing a known future gap, and those managing specific covenant or financing optics where a lender wants to see income at a level.
What dividends buy, and the tax your corporation gets back
Dividends are the flexible route, and for an MPC with investments they are also the route that recovers tax the corporation has already paid. The mechanics matter here. When your corporation earns investment income, interest, foreign dividends, the taxed half of capital gains, it pays tax at roughly 50 percent, but a substantial slice of that is refundable tax, tracked in a notional account called refundable dividend tax on hand, RDTOH. The refundable slice comes back to the corporation only when it pays taxable dividends to you. Pay no dividends, and the corporation's prepaid tax just sits there, interest-free, sometimes for years.
This is why an incorporated physician with a real portfolio should usually pay some taxable dividends every year, even in years when salary alone would cover the household. Each dividend triggers a dividend refund to the corporation, converting stranded refundable tax back into investable cash, and a compensation plan that ignores the RDTOH balance leaves that refund unclaimed. The account itself is split into pools tied to the kind of dividend paid, eligible or non-eligible, so the type of dividend has to match the pool being recovered; this is bookkeeping your accountant should surface at planning time each year, not a detail discovered at filing.
Dividend type matters on your personal return too. Most MPC profit is taxed at the small-business rate and comes out as non-eligible dividends. Income the corporation earned at the general corporate rate, and eligible dividends it received from its portfolio, build a separate notional account, GRIP, that lets it pay eligible dividends, which carry a lower personal tax rate to reflect the higher corporate tax already paid. A well-run year-end review checks all three accounts, RDTOH pools, GRIP and the capital dividend account from the untaxed half of realized capital gains, and designs the year's dividends to drain them in the cheapest order. That review is standing work inside our tax planning engagements for medical corporations.
The discipline cost of dividends is cash management. Nothing is withheld at source, so the personal tax arrives later through instalments, and the physician has to bank for it deliberately. Dividends also build no RRSP room and no CPP record, which is precisely why the answer for most physicians is a blend rather than a conversion from one religion to the other.
The blend across a medical career
The right mix is a moving target that tracks your career, which is why we re-set it annually rather than engraving it. The pattern below is a starting map, not a prescription; your numbers can and should override it.
| Career stage | Typical lean | Why |
|---|---|---|
| New to practice, carrying debt | Modest draw, form flexible; often dividend-simple | Debt repayment and TFSA come first; payroll admin adds little while income is finding its level |
| Established, building years | Salary to the RRSP target, dividends above it | Locks in RRSP room and CPP while dividends handle variable household needs and start draining RDTOH |
| Peak earning, mid-40s onward | Salary sized for an IPP, dividends for the rest | An IPP funded by the corporation can out-shelter the RRSP at this age, and it requires T4 income to work |
| Wind-down and retirement | Mostly dividends on a schedule | Billings stop; the portfolio pays out against low brackets while dividend refunds return the corporation's RDTOH year by year |
| Either spouse past 65 | Blend, with spousal dividends in play | The split-income rules relax for a spouse once the physician is 65, reopening a door TOSI otherwise keeps shut |
Two stage-specific notes deserve emphasis. The parental leave or sabbatical year is the clearest smoothing win available to an incorporated physician: hold income in the corporation beforehand, then draw through the low-income year at low brackets, in whichever form the year's plan favours. And the retirement stage is where dividend planning does its heaviest lifting, because the corporation's refundable tax only comes home as dividends actually flow; a drawdown schedule designed against your brackets, your OAS clawback threshold and the RDTOH balance is worth real money every single year it runs.
The facts that change the answer, and how we run it
When we set a physician's blend each year, six facts do most of the deciding:
- Your household's after-tax cash need, which sets the size of the draw before anything sets its form.
- Your RRSP intention: salary to the room target if you use it, less if you deliberately do not.
- Your age and IPP horizon, because the pension option needs salary history in place before it is needed.
- The MPC's investment income and RDTOH balances, which tell us the minimum taxable dividend the year should carry.
- The state of GRIP and the capital dividend account, which decide the cheapest dividend types to pay first.
- The year's shape: a leave, a locum surge, a practice purchase or a planned property move can override every default above.
The mechanics follow the decision: directors' resolutions for dividends, payroll filings for salary, instalment schedules for both you and the corporation, and a year-end review that ties the compensation plan to the corporate portfolio rather than treating them as separate files. That integration is the practical difference between a CPA for incorporated healthcare professionals in Ontario and a tax preparer with medical clients, and it is how our Ongoing Financial Partnership runs this for physicians: books, corporate return, personal return and the annual blend decision in one set of hands. The wider set of MPC decisions this sits inside, surplus policy, family shares, what stays outside the corporation, is mapped at accounting for incorporated physicians.
One structural caveat belongs in every physician's version of this decision: because no holding company can sit above an MPC, your corporation is both your practice and your investment vehicle, so compensation planning and portfolio planning are the same conversation. If you have been wondering whether a holdco could change that, the honest answer lives at should an incorporated physician have a holding company. And if you want your own numbers run rather than a map, a free 15-minute discovery call is the starting point; the first deliverable is your blend for this year, with the reasoning written down.
