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The Entrepreneur’s Guide to Wealth Management
Tax Planning for Dentists: Managing Retained Earnings and Personal Income
Operating your dental practice through a professional corporation gives you more control over your income than most salaried professionals. That control can be valuable, but only if you use it deliberately. Tax planning should go beyond this year’s tax bill. It should help you manage how money moves between your corporation and your personal finances, with your long-term goals in view.
Incorporation does not eliminate tax. It changes when and how tax is paid. Retained earnings, compensation decisions, and investment structure all influence your flexibility later, especially as you approach retirement or a transition out of practice.
Understanding the Flow of Money in Your Corporation
The financial flow inside a dental corporation is relatively straightforward:
- Practice revenue is earned.
- Operating expenses are paid.
- Corporate tax is applied.
- Remaining profits become retained earnings.
- You decide how much to extract personally.
The key planning decisions happen at steps four and five. How much do you retain? How much do you pay yourself? And in what form?
Each of those choices affects:
- Your personal cash flow
- Your ability to invest
- Your debt strategy
- Your retirement timeline
If these decisions are made each year independently, without reference to long-term goals, your planning becomes reactive.
Salary vs Dividends: Choosing How You Pay Yourself
One of the most common questions dentists ask is whether they should pay themselves a salary or dividends. The answer is rarely absolute.
A useful way to think about it is this: salary is often used when you want to build RRSP contribution room and keep pension contributions consistent, while dividends are often used when you want flexibility in how and when you withdraw income. In many cases, the right answer is a mix that matches your cash flow needs, your debt, and how you plan to fund retirement.
Salary can:
- Create RRSP contribution room
- Contribute to the Quebec Pension Plan (QPP)
- Be deductible to the corporation
- Improve personal borrowing capacity
- Allow the use of an Individual Pension Plan (IPP)
Dividends can:
- Avoid creating QPP contributions
- Offer simpler administration
- Provide flexibility in income timing
- Reduce reliance on payroll mechanisms
A blended approach is often appropriate. But the decision should not be based solely on annual tax savings. Compensation affects disability coverage calculations, retirement savings accumulation, and long-term liquidity. It can also influence mortgage qualification, the stability of declared income, and how certain insurance benefits are assessed.
For example, a dentist who pays only dividends for many years may later realize that RRSP contribution room is limited. Conversely, a dentist who pays a high salary without a strategic reason may increase payroll costs unnecessarily. The appropriate approach depends on your personal situation, your debt, your family’s needs, and your retirement horizon.
Once you decide how you pay yourself, the next question follows naturally: What happens to the surplus that stays inside the corporation?
Retained Earnings: What Are You Keeping, and Why?
Retained earnings are one of the main advantages of incorporation. They can help you defer personal taxation and create planning flexibility. However, retained earnings only help when you have a plan for them.
Retained earnings can be used to:
- Smooth personal income during lower-production years
- Prepare for equipment upgrades or reinvestment
- Build liquidity ahead of a future transition
- Support long-term investing inside the corporation
The risk is letting retained earnings accumulate without direction. Passive investment income inside a corporation is taxed differently from active business income, and it can reduce access to the small business deduction (SBD) once certain thresholds are exceeded. Over time, excessive accumulation may also complicate practice sales or restructuring.
The key is intentionality. Ask yourself: Why am I retaining this amount? What is its role in my broader plan? If you cannot answer these questions clearly, the retained earnings may not be serving you.
Investing Inside the Corporation vs Outside
Once you are retaining earnings with intention, the next decision is where those assets should live. Keeping investments inside the corporation can be efficient, but it can also keep too much of your net worth under the same umbrella as your practice.
A useful way to think about this is through three questions:
- Liquidity: If you needed funds for a personal purchase, a leave of absence, or an opportunity, how easily could you access them without disrupting your plan?
- Concentration: How much of your net worth already depends on the clinic, its cash flow, and its eventual sale value?
- Transition: If you plan to reduce hours, add an associate, or sell in the next 5 to 10 years, will assets inside the corporation make that transition easier or more complicated?
Many dentists benefit from building wealth in layers. Some assets remain inside the corporation for long-term growth. Others are positioned outside the clinic environment over time to increase flexibility and reduce reliance on a single outcome, such as the timing and value of a practice sale.
There is no single correct split. The goal is to avoid defaulting to one approach for years without revisiting it. As retained earnings grow, the best structure is usually the one that keeps your options open.
Debt Strategy and Cash Flow Discipline
Tax planning sits alongside your debt structure and cash flow decisions.
Early in your career, practice loans, equipment financing, and personal mortgages often drive your priorities. In that stage, stability usually matters more than optimization. Paying down high-impact debt and keeping obligations manageable can improve flexibility more than minor tax tweaks.
As retained earnings grow, the question becomes whether to accelerate debt repayment or retain capital for investing. A practical way to evaluate that decision is to look at:
- Cash flow pressure: Can you absorb a slower month without stress?
- Interest rate exposure: Are your borrowing costs stable or variable?
- Liquidity needs: Do you need accessible funds for taxes, reinvestment, or personal goals?
- Timeline: Are you within 5 to 10 years of reducing hours or transitioning out?
Common misalignments include:
- Large retained earnings while personal cash flow feels tight
- Aggressive debt repayment without adequate reserves
The goal is alignment. When debt, investing, and compensation decisions support the same plan, you gain flexibility.
Preparing Withdrawals Before Retirement
One of the most common mistakes made by dentists—and many business owners, for that matter—is waiting until the final years of their practice to consider how retained earnings will be withdrawn.
If extraction planning is delayed, you may face:
- Large tax liabilities in a compressed time frame
- Limited flexibility in retirement income design
- Overdependence on the sale of the practice
A more deliberate approach begins years earlier. Gradual extraction, strategic dividend timing, and coordinated investment planning can reduce tax shocks and create smoother retirement income.
Tax planning, in this sense, is not about the current year. It is about preparing the corporation and the individual for an eventual transition.
Example: Two Dentists, Two Outcomes |
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| Consider two dentists who have practised for a similar number of years and earn comparable income.
Dr. Gagnon keeps most surplus within the corporation but never really plans how it will come out. Dividends are declared irregularly, mainly at year-end, to address immediate needs or tax considerations. As retirement approaches, a large balance has built up, but there is no clear strategy for withdrawals. The sale of the practice becomes the primary way to unlock value, and its timing starts to drive personal decisions. Dr. Roy also retains earnings within the corporation, but reviews the situation regularly. Over time, he adjusts compensation, begins a measured pattern of dividends, and gradually builds assets both inside and outside the corporation. As retirement approaches, the focus shifts to smoothing income rather than emptying the corporation all at once. Both dentists have worked hard and built valuable practices. The difference is that Dr. Roy has more flexibility in when and how to step back. Dr. Gagnon is more dependent on a single event happening at the right time and at the right price. |
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Example: Two Dentists, Two Outcomes |
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|---|---|
| Consider two dentists who have practised for a similar number of years and earn comparable income.
Dr. Gagnon keeps most surplus within the corporation but never really plans how it will come out. Dividends are declared irregularly, mainly at year-end, to address immediate needs or tax considerations. As retirement approaches, a large balance has built up, but there is no clear strategy for withdrawals. The sale of the practice becomes the primary way to unlock value, and its timing starts to drive personal decisions. Dr. Roy also retains earnings within the corporation, but reviews the situation regularly. Over time, he adjusts compensation, begins a measured pattern of dividends, and gradually builds assets both inside and outside the corporation. As retirement approaches, the focus shifts to smoothing income rather than emptying the corporation all at once. Both dentists have worked hard and built valuable practices. The difference is that Dr. Roy has more flexibility in when and how to step back. Dr. Gagnon is more dependent on a single event happening at the right time and at the right price. |
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Common Tax Planning Mistakes Dentists Make
Certain patterns come up often when we review corporate tax planning with dentists:
Chasing short-term tax savings
Decisions are made mainly to reduce this year’s tax, without checking how they affect retirement income, liquidity, or future withdrawals.
Retaining earnings without a plan
Surplus builds up in the corporation simply because it can, not because it is earmarked for a specific role such as reinvestment, transition, or long-term investing.
Using the same salary–dividend mix for too long
A compensation strategy that made sense early in your career is never revisited, even when your debt, income level, or family situation has changed.
Ignoring concentration risk
A large share of net worth ends up tied to one environment: the practice, the corporation, and its investments, with limited diversification elsewhere.
Waiting too long to think about extraction
Withdrawal planning is left to the last few years, which compresses tax costs and limits flexibility in how the transition is structured.
These issues are rarely the result of a single bad decision. They usually come from a lack of coordination over time.
Why This Matters for the Rest of Your Plan
How you manage compensation, retained earnings, investing, and debt inside your corporation shapes much more than your tax bill. It affects how resilient your finances are during slower periods, how independent your personal wealth is from your practice and how much choice you will have when you decide to reduce hours or retire.
Tax planning is part of wealth management, not a separate exercise. It works best when it supports the structure you put in place and prepares the ground for what comes next.
At The St-Georges Group, we see tax planning, compensation, and retained earnings as part of the same conversation. We work alongside your accountant, notary or lawyer, and other specialists to help ensure that the way you pay yourself, retain earnings, invest, and manage debt supports the life you are building.
As wealth management advisors, our role is to coordinate corporate and personal planning through wealth management services, so your decisions inside the corporation stay aligned with your long-term goals. Contact us if you would like to review whether your current structure and tax planning still fit where you are today and where you want to be at retirement.
