Why Incorporated Physicians Need to Think Carefully Before Turning Their Professional Corporation into a Giant RRSP Funding Machine

A 71-year-old incorporated physician — referred to here as “Dr. Abbey” — recently came to me seeking tax planning advice.

 The name of the client and certain details of the fact pattern have been altered to protect client confidentiality while preserving the planning concepts being illustrated.

For decades, Dr. Abbey and her husband had followed what they believed was disciplined financial advice:

• maximize salary
• maximize RRSP contributions and
• contribute the maximum every year

Their previous advisor had consistently encouraged this strategy.

And to be fair:

• it produced large RRSPs
• substantial tax deductions
• and significant accumulated retirement assets

By age 71:

• Abbey’s RRSP was worth approximately $3 million
• and her husband’s RRSP had also grown to approximately $3 million

Her husband had passed away several years earlier. As permitted under the Income Tax Act, his RRSP rolled over tax-free to Dr. Abbey. Now, at age 71, she effectively controlled approximately $3,000,000 + $3,000,000 inside RRSPs. And that is when the real planning problem began.

Because once RRSPs reach this magnitude, the issue is no longer “How do we maximize deductions?”

The issue becomes “How do we manage the enormous taxable income these plans may eventually force into retirement?”

Under Canada’s RRIF rules:

• RRSPs must generally convert to RRIFs by the end of the year the annuitant turns 71
• and mandatory minimum withdrawals begin thereafter

On RRIF balances approaching $6 million, the mandatory annual withdrawals alone may eventually create several hundred thousand dollars of taxable income annually.

And importantly, those withdrawals occur whether the physician requires the cash or not

When Dr. Abbey asked what planning opportunities remained, the unfortunate reality was that: much of the planning had effectively already been done decades earlier when the original compensation and RRSP strategy was established

This example illustrates a critically important concept many incorporated physicians fail to appreciate early enough: maximizing RRSPs is not automatically the same thing as maximizing long-term tax efficiency

Why Incorporated Physicians Are Different

Employees generally have limited planning tools:

• RRSPs
• TFSAs
• pensions
• and non-registered investing

An incorporated physician has an additional planning vehicle: the professional corporation itself. That distinction changes the planning conversation dramatically.

Because unlike RRSPs:

• investments retained inside a professional corporation are not subject to mandatory RRIF conversion
• there is no legislated annual withdrawal schedule
• and there is no requirement forcing the physician to withdraw increasing amounts of taxable income beginning at age 72

That flexibility matters enormously later in life.

Preserving Retirement Tax Flexibility

One of the most overlooked objectives in retirement planning is not simply accumulating wealth, but rather preserving flexibility over future taxable income.

For many incorporated physicians, allowing RRSP balances to grow materially beyond approximately $1,000,000 may warrant careful reconsideration. Not because RRSPs are “bad.”

But because eventually:

• RRSPs become RRIFs
• and RRIFs create mandatory taxable withdrawals beginning at age 72

At age 72, a RRIF balance of $1,000,000 creates mandatory annual taxable income of approximately $54,000.

If CPP and OAS are later added, total retirement income may still remain at relatively manageable levels from a tax-planning perspective.

For example:
$54,000 (RRIF) + $18,000 (CPP) + 9,000 (OAS) or approximately $81,000 annually.

That level of retirement income may still preserve:

• OAS benefits
• lower marginal tax brackets
• pension splitting flexibility
• selective corporate withdrawals
• and broader retirement income planning opportunities

Now compare that to a RRIF balance of $6,000,000 where mandatory RRIF withdrawals alone become approximately $6,000,000 X 5.40% = $324,000 or $324,000 annually, before CPP, OAS, investment income, or corporate distributions are even considered.

At that point:

• OAS is fully eliminated
• top marginal tax rates become unavoidable
• and much of the retirement tax planning flexibility has already disappeared

And importantly those withdrawals are mandatory. The retiree may not need the cash. But the taxable income occurs anyway. That is the long-term planning issue many incorporated physicians fail to fully appreciate when they are repeatedly told for decades “just maximize your RRSP.”

What a $6 Million RRIF Problem Could Look Like

Assume:

• combined RRIF balances of approximately $6 million
• annual investment growth of 3%
• minimum withdrawals only
• CPP income of approximately $18,000 annually
• and an OAS clawback threshold of approximately $93,454 for the 2026 recovery period

The following illustrates how significant taxable income may continue for decades:

Age	Minimum RRIF %	Opening RRIF Balance	Minimum Withdrawal	Approx. Income Before OAS	Approx. OAS Clawback
72	5.40%	$6,000,000	$324,000	$342,000	Full OAS eliminated
73	5.53%	$5,846,280	$323,298	$341,298	Full OAS eliminated
74	5.67%	$5,688,669	$322,548	$340,548	Full OAS eliminated
75	5.82%	$5,527,108	$321,678	$339,678	Full OAS eliminated
76	5.98%	$5,361,590	$320,622	$338,622	Full OAS eliminated
77	6.17%	$5,192,197	$320,358	$338,358	Full OAS eliminated
78	6.36%	$5,017,995	$319,143	$337,143	Full OAS eliminated
79	6.58%	$4,839,816	$318,459	$336,459	Full OAS eliminated
80	6.82%	$4,656,996	$317,607	$335,607	Full OAS eliminated
81	7.08%	$4,469,571	$316,446	$334,446	Full OAS eliminated
82	7.38%	$4,277,718	$315,696	$333,696	Full OAS eliminated
83	7.71%	$4,080,885	$314,637	$332,637	Full OAS eliminated
84	8.08%	$3,879,234	$313,443	$331,443	Full OAS eliminated
85	8.51%	$3,672,768	$312,552	$330,552	Full OAS eliminated
86	8.99%	$3,461,022	$311,145	$329,145	Full OAS eliminated
87	9.55%	$3,244,371	$309,837	$327,837	Full OAS eliminated
88	10.21%	$3,022,570	$308,604	$326,604	Full OAS eliminated
89	10.99%	$2,795,386	$307,212	$325,212	Full OAS eliminated
90	11.92%	$2,562,817	$305,487	$323,487	Full OAS eliminated
91	13.06%	$2,325,048	$303,651	$321,651	Full OAS eliminated

 

The point is not simply that tax will be payable. That is expected. The point is that RRIF withdrawals of this magnitude can make retirement income almost impossible to manage. Even before considering corporate dividends, rental income, investment income, or capital gains, Dr. Abbey’s RRIF withdrawals and CPP alone would place her far above the OAS recovery threshold every year shown above.

In practical terms, the OAS benefit is no longer something that can be preserved through planning. It has effectively been sacrificed because the RRSP balance became too large. That is the planning lesson. A more moderate RRSP balance — for example, approximately $1 million — may produce mandatory RRIF income of roughly $54,000 at age 72. Add CPP of approximately $18,000 and OAS of approximately $9,000, and total income may be closer to $81,000 before other income sources. That level of income still leaves room for planning. It may preserve OAS. It may permit selective corporate withdrawals. It may allow the taxpayer to control when additional income is taken.

A $6 million RRIF does not provide the same flexibility.

So Why Have an RRSP At All If You Have a Professional Corporation?

This is an important question. If professional corporations provide flexibility and avoid mandatory RRIF withdrawal rules, physicians often ask “Why contribute to RRSPs at all?” The answer is that different investment structures are often better suited for different types of investment income.

For example:

• interest income
• GIC income
• bond income
• and certain dividend-producing investments

are often far more tax-efficient when earned inside:

• RRSPs
• TFSAs
• RESPs
• FHSAs
• or other registered plans

Why?

Because certain types of investment income earned inside a professional corporation can eventually become extremely tax-inefficient once:

• corporate tax
• refundable tax mechanisms
• and eventual personal taxation on distribution
  are considered together

For example, in Ontario, the combined corporate and personal tax cost on certain forms of passive investment income earned inside corporations can approach extraordinarily high effective tax rates once funds are ultimately distributed personally. By contrast, capital gains can often be earned in a very tax-efficient manner inside of a professional corporation.

If you are wondering what a “capital gain” is and how it differs from interest or dividend income, a capital gain generally arises when an asset is sold for more than its original cost. In simple terms: a capital gain is the profit realized when assets such as:

• shares
• ETFs
• mutual funds
• land
• real estate
• or even a business

are sold for more than what was originally paid for them.

Unlike interest income — which is typically taxed annually as it is earned — capital gains often arise infrequently and may allow for:

• tax deferral
• greater long-term compounding
• and significantly more flexibility from a tax-planning perspective

This is one of the reasons many incorporated physicians and business owners think carefully not only about:

• how much they invest
  but also:
• what type of investment income is being generated
• where those investments are held

• and the long-term tax consequences of each structure.

The practical takeaway is often this:

where possible, interest and dividend-producing investments may be better suited for registered plans, while long-term capital growth investments may be better suited for professional corporations.

This is why many incorporated physicians use:

• RRSPs strategically
• corporations strategically
• and investment location planning strategically

The issue is not “RRSP versus corporation.” The issue is which investments belong in which structure, in what amounts, and for what long-term purpose.

Not All Investments Belong in the Same Structure

Generally speaking:

Registered Plans

Often better suited for:

• interest-bearing investments, like bonds and GICs
• income-oriented investments, like stocks that are dividend bearing

 Professional Corporations

Often better suited for:

• investments expected to be held over time but that appreciate in value also

Why? Because:

• interest income is taxed heavily
• while unrealized capital growth provides substantially greater long-term flexibility

Good Planning Is Usually Balanced Planning

This article is not arguing “Never contribute to an RRSP.” Nor is it arguing “Always leave everything inside the corporation.” The point is incorporated physicians often require a more balanced and nuanced strategy than generic RRSP advice acknowledges.

A different planning approach for Dr. Abbey and her husband may have involved:

• allowing RRSPs to grow to more moderate levels
• preserving flexibility within the professional corporation
• and avoiding the creation of massive future mandatory RRIF income

For many incorporated physicians, balanced planning may involve:

• moderate RRSP accumulation
• corporate investing
• TFSAs
• debt reduction
• liquidity reserves
• and long-term retirement modeling working together

The objective should not simply be “largest RRSP possible.” The objective should be:

• flexibility
• long-term tax efficiency
• and control over future taxable income

Final Thoughts

Healthcare professionals spend years training to avoid practicing outside their expertise. Financial planning deserves the same attention.

The objective should not just be:

• chasing the largest deduction
• the biggest RRSP
• the most aggressive strategy

Objectives should also include:

• thoughtful planning
• flexibility
• tax efficiency
• and decisions grounded in integrated professional analysis rather than slogans

Because in financial planning — just as in medicine — the right answer always depends on the patient.

 

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Disclaimer

This article is intended for general information purposes only and should not be relied upon as legal, tax, insurance, accounting, or financial advice. Every individual’s circumstances are different, and tax results depend heavily upon specific facts, assumptions, legislation, administrative policy, and future changes in tax law.

Readers should not act upon the information contained in this article without first obtaining professional advice tailored to their specific circumstances from qualified advisors, including their accountant and legal counsel where appropriate.

Tucker Professional Corporation accepts no responsibility for any loss arising from reliance upon the contents of this article.