While placing specific investments in tax-advantaged accounts seems like a mathematical win, the unpredictable nature of future returns often renders the strategy more complex than it is valuable.
The Search for Incremental Gains
For the disciplined investor, the realization that market timing and stock picking are losing games is a turning point. Once you accept that you cannot consistently beat the market, your focus shifts toward variables you can actually control: fees, risk, and taxes. Tax planning, specifically, offers a way to keep more of what your investments earn. This leads many to the concept of asset location.
Asset location should not be confused with asset allocation. While allocation is the decision of how much to hold in stocks versus bonds, location is the strategic placement of those assets across different account types, such as the RRSP, TFSA, and taxable accounts. The goal is to minimize 'tax drag' by shielding the most heavily taxed assets from the government’s reach. On paper, it is a logical extension of a passive investment strategy.
The Conventional Wisdom of Placement
The standard playbook for asset location follows a set of intuitive rules based on current Canadian tax law. Fixed income is typically relegated to the RRSP because interest income is taxed at the highest marginal rate. By keeping bonds there, investors also lower the expected growth of the account, which can help reduce mandatory minimum withdrawals later in life. Conversely, Canadian equities are often held in taxable accounts because the Canadian dividend tax credit offers a more favorable rate than interest or foreign dividends.
Further nuances involve international and U.S. equities. International stocks, which often carry higher yields and fully taxable foreign dividends, are frequently placed in the TFSA. U.S. equities are often prioritized for the RRSP—after bonds—because holding U.S.-listed ETFs in that specific account allows investors to avoid U.S. withholding taxes that are otherwise unrecoverable. These rules make perfect sense, provided the future behaves exactly as we expect it to.
The Gap Between Theory and Reality
The potential value of asset location is usually measured against a 'mirrored' strategy, where an investor holds the same mix of assets in every account. Research from Morningstar and my colleagues at PWL Capital suggests that an optimal location strategy could add between 23 and 30 basis points of value per year. In my own statistical analysis using Monte Carlo simulations, I found that in an ideal scenario—a high-income earner with ample RRSP room—the strategy added value in about 80% of simulated outcomes.
However, these simulations rely on a dangerous assumption: that we know future returns. When I adjusted the model to test the strategy against actual historical returns rather than the expected returns used to make the initial placement decisions, the results were sobering. The average value added plummeted from 0.23% to a mere 0.07%. More tellingly, the 'optimal' strategy only outperformed the simple mirrored portfolio 58% of the time. In nearly half of the scenarios, the effort of optimization resulted in no benefit or a worse outcome.
The Hidden Costs of Complexity
Beyond the math, there are practical and regulatory risks to consider. Tax laws are not static; if the government increases the inclusion rate for capital gains or alters the dividend tax credit, a previously 'optimal' location could suddenly become a liability. Furthermore, the complexity of managing different slices of a portfolio across various accounts makes rebalancing a logistical nightmare. For the DIY investor, this friction often leads to procrastination or errors in execution.
Even for those using professional wealth management, this complexity has a price. Customizing location for every client reduces a firm’s ability to scale their operations, which inevitably leads to higher fees over the long term. As Gerard O’Reilly of Dimensional Fund Advisors has noted, these models are often too sensitive to their inputs to define a truly reliable strategy. When the experts cannot agree on what 'optimal' looks like, it is a clear signal that the strategy may not be worth the average investor's time.
Prioritizing Simplicity Over Optimization
The most significant risk of asset location is not a few basis points of tax drag, but the behavioral friction it creates. If the mental overhead of deciding where to put a new contribution causes you to delay investing for months, or if the difficulty of rebalancing leads you to ignore your target risk profile, the strategy has failed you. As John Robertson, author of The Value of Simple, suggests, the default should be to replicate the same allocation across all accounts.
In the end, asset location is a pursuit of diminishing returns. Because we cannot predict the future, the attempt to optimize placement is often a gamble disguised as a calculation. For the vast majority of investors, the most effective path is the simplest one. By holding the same diversified mix in every account, you ensure that your portfolio remains manageable, transparent, and easy to maintain. In the world of investing, simplicity isn't just a convenience—it is a safeguard against the uncertainty of the future.