Making Sense of Corporate Investing: Smart, Practical Strategies for Professionals
For incorporated professionals, building wealth inside a corporation can be a powerful strategy — but it’s easy to get lost in the details. Tax rules are layered with notional accounts, passive income limits, and planning tradeoffs that aren’t always obvious unless you’re working with them regularly.
Done well, corporate investing helps to give you more control over taxes, smoother retirement income with a potential long-term outcome. Done poorly, it can quietly create inefficiencies or lead you down paths that sound good on paper but fall short in practice.
Here are a few important planning considerations.
Start With the Role of the Corporation
The core benefit of a corporation is tax deferral. When business income is left in the corporation, it’s taxed at a much lower rate than personal income. That frees up more capital to invest — but only temporarily. Eventually, the money has to come out, and when it does, it’ll be taxed personally (through salary or dividends).
This means the goal is never to avoid tax altogether, but to defer and manage it in a way that aligns with your life. When you expect to be in a lower personal tax bracket later — like in retirement — that deferral can create a real advantage.
Track Your Notional Accounts
Every incorporated business has a few behind-the-scenes accounts tracked for tax purposes. The two most relevant for investing are:
- RDTOH (Refundable Dividend Tax on Hand): A portion of the tax paid on passive investment income can be refunded when the corporation pays eligible dividends.
- CDA (Capital Dividend Account): Tracks tax-free amounts that can be paid out to shareholders, usually from capital gains or life insurance proceeds.
If you’re incorporated and investing, you should know the balances of both. These aren’t shown on a T5 or corporate notice of assessment — your accountant or advisor will need to keep tabs on them. In many cases, I’ve seen clients sitting on significant unused CDA balances or missed RDTOH refunds simply because no one was watching.
Salary vs. Dividends: Not a Binary Choice
There’s been a long-running debate about whether to pay yourself salary or dividends. The truth is, it’s usually not one or the other. Salary creates RRSP and IPP room (and contributes to CPP), while dividends help unlock RDTOH. The most effective approach tends to be dynamic — adjusting year by year based on your corporate income, investment income, and other sources of cash flow.
This mix gives you more planning flexibility and a better after-tax outcome in the long run. It also keeps options open — like using an Individual Pension Plan (IPP) later in your career, or making strategic RRSP contributions when they offer real benefit.
Don’t Overlook Your Registered Accounts
One common myth is that everything should be left in the corporation. In reality, your RRSP and TFSA are still among the most tax-efficient tools available. They offer tax-sheltered growth — something your corporate investment account doesn’t — and they can complement your long-term income planning when paired with corporate assets.
Even your personal non-registered account can have a role. If you can withdraw money from your corporation at a low tax rate (for example, using CDA or during a low-income year), reinvesting it personally can reset the tax cost base and diversify your future withdrawal strategy.
Thinking About Corporate Class Funds? Read the Fine Print
Corporate class mutual funds are often marketed as a more tax-efficient way to invest inside a corporation. The concept makes sense: income and losses can be pooled across different funds in the same corporate structure to reduce distributions, and more of the return shows up as capital gains (which are taxed more favourably in a corporate context).
But there are tradeoffs. Actively managed corporate class funds tend to have higher fees, and the underlying corporate structure can introduce complexity that isn’t obvious at first glance. A key risk is that if the structure starts generating net taxable income (rather than offsetting gains and losses), the tax efficiency quickly deteriorates.
Dr. Mark Soth’s article on LoonieDoctor.ca, “Swap ETF Evolution to Corporate Class (Part 2: Rise of the Resistance)” (2019), offers a detailed breakdown of how swap-based funds are restructured within a corporate class framework. It explains how some fund managers pair total-return swap strategies with companion funds that have relatively high fees and low returns, using this arrangement to offset income and minimize taxable distributions in investor accounts. Soth’s analysis is notable for its clear explanation of how these impact financial plans over the long term.
Avoid Overconcentration in the Corporation
When your corporate account becomes your largest (or only) investment vehicle, it can start working against you. You might end up:
- Building up refundable taxes you’re not triggering
- Paying higher corporate tax on passive income than you’d pay personally
- Missing opportunities to fund other accounts that reduce lifetime taxes
Some of the most effective strategies are the simplest: gradually drawing funds out over time, topping up RRSPs and TFSAs, or funding personal accounts during lower-income years. This spreads out your tax burden and builds flexibility into your retirement planning.
Corporate Strategy Should Reflect Your Bigger Picture
If you’re in a position where your corporation has accumulated more money than you need — or you’re earning more investment income than you’re spending — that’s a good problem. But it’s still a problem if you’re not being intentional about it.
At that point, the next level of planning isn’t about another investment product — it’s about aligning your capital with your values. That might mean scaling back your work, giving more to charity, or investing in something personal that brings meaning. The financial tools are just a means to an end.
Final Word
Investing through a corporation is a legitimate advantage for Canadian professionals — particularly when it’s done thoughtfully. The best plans consider how much to invest personally vs. corporately, when to trigger withdrawals, and how to do so tax-efficiently.
When in doubt, keep things clean. Make sure your notional account balances are tracked (or ask your accountant for them), and be intentional with how funds are moved in and out of your corporation. Allow me to work with your accountant and any other professionals in your financial life to make sure we’re optimizing across the board — not just within your portfolio.
Disclosures:
Important information about mutual funds is found in the Fund Facts document. Please read this carefully before investing. Commissions, trailing commissions, management fees and expenses all may be associated with mutual fund investments. Mutual funds are not guaranteed, their values change frequently, and past performance may not be repeated. Unit values and investment returns will fluctuate.
The information provided is based on current laws, regulations and other rules applicable to Canadian residents. It is accurate to the best of our knowledge as of the date of publication. Rules and their interpretation may change, affecting the accuracy of the information. The information provided is general in nature and should not be relied upon as a substitute for advice in any specific situation. For specific situations, advice should be obtained from the appropriate legal, accounting, tax or other professional advisors.
Stick to a plan. Stay diversified. Keep costs low. Avoid the noise.
And remember: boring investing is often the most effective.
