Why Many Investors Pay More Tax Than They Need to Without Realising It

Why Many Investors Pay More Tax Than They Need to Without Realising It

A practitioner’s view on tax drag, structure, and missed planning opportunities

Many investors seem to do everything right when it comes to compliance. They file returns on time, report income accurately, and use reputable institutions. Still, we often see investors paying much more tax than needed, not due to mistakes, but because of decisions made without considering tax implications.

The problem isn’t a lack of sophistication. Instead, investment decisions are often made separately from tax planning, even though tax is one of the few things investors can control. Over time, this gap leads to what tax professionals call tax drag: the slow loss of after-tax returns caused by inefficient income placement, timing, and account structure.

This article looks at where tax drag comes from, why it continues, and how investors in Canada and the United States can reduce it by using current rules instead of aggressive strategies.

Tax Drag: The Cost Most Investors Do Not Calculate

Tax drag refers to the reduction in investment returns caused by taxes paid on income, distributions, and realized gains. While market volatility receives considerable attention, taxes often have a more predictable and cumulative impact.

The Canada Revenue Agency explicitly recognizes that different types of investment income are taxed at different rates, and that this affects after-tax outcomes (Canada Revenue Agency, 2023). Similarly, the Internal Revenue Service distinguishes sharply between interest, dividends, and capital gains, each subject to different tax treatment (Internal Revenue Service, 2024a).

Despite this, many investors evaluate performance on a pre-tax basis, which obscures the real cost of tax inefficiency.

The Income Type Problem: Not All Investment Income Is Equal

One of the most common sources of unnecessary tax is misunderstanding how different types of income are taxed.

In Canada:

• Interest income is fully taxable at the investor’s marginal tax rate.
• Eligible dividends benefit from the dividend tax credit, reducing effective tax rates.
• Capital gains are taxed on only 50 percent of the gain (Canada Revenue Agency, 2024a).

In the United States:

• Ordinary interest is taxed at ordinary income tax rates.
• Qualified dividends and long-term capital gains benefit from preferential rates, currently capped at 0 percent, 15 percent, or 20 percent depending on income (Internal Revenue Service, 2024b).

The practical consequence is that two portfolios with identical pre-tax returns can produce very different after-tax outcomes depending on income composition.

Example (analytical, not anecdotal):
An investor holding interest-generating assets in a taxable account may face marginal tax rates exceeding 50 percent in some Canadian provinces. By contrast, eligible Canadian dividends benefit from the dividend gross-up and tax credit mechanism, often resulting in a significantly lower effective tax rate than interest income (Canada Revenue Agency, 2024a).

Account Location: The Overlooked Planning Lever

Another common issue we see is asset location inefficiency, which means putting the wrong investments in the wrong accounts.

Registered and tax-advantaged accounts exist specifically to shelter or defer tax:

• In Canada: RRSPs, TFSAs, and pension plans.
• In the U.S.: IRAs, SEP IRAs, 401(k)s, and Roth accounts.

The CRA outlines that income earned inside registered plans is either tax-deferred or tax-free, depending on the account type (Canada Revenue Agency, 2024b). The IRS similarly explains that tax-deferred retirement accounts allow income to grow without current taxation, while Roth accounts provide tax-free withdrawals if conditions are met (Internal Revenue Service, 2024c).

Despite this, many investors:

• Hold low-growth, tax-efficient assets inside registered plans.
• Hold high-interest or frequently trading assets in non-registered accounts.

This mismatch leads to unnecessary yearly taxes, even though there are more efficient options available within the current system.

Timing Matters: When Gains Are Realized Can Matter More Than What Is Earned

Taxes are often triggered not by performance, but by realization events.

Both the CRA and IRS tax capital gains only when they are realized, not when asset values just go up on paper (Canada Revenue Agency, 2024a; Internal Revenue Service, 2024b). This creates both opportunities and risks.

Common issues we see include:

• Unnecessary realization of gains late in the calendar year.
• Selling assets without considering offsetting capital losses.
• Failing to coordinate gains across spouses or years.

The CRA allows capital losses to be carried back three years or forward indefinitely to offset capital gains (Canada Revenue Agency, 2024c). The IRS similarly permits capital loss carryforwards, subject to annual limits against ordinary income (Internal Revenue Service, 2024d).

Not using these rules well often means paying more tax over your lifetime, even if each transaction seems reasonable on its own.

Distribution Blind Spots and Reinvested Income

Another way people overpay is by misunderstanding how distributions are taxed, even when they are reinvested.

Both Canadian and U.S. tax authorities make clear that reinvested dividends and capital gain distributions are still taxable in the year received, even if no cash is withdrawn (Canada Revenue Agency, 2024d; Internal Revenue Service, 2024e).

Many investors think that reinvesting defers tax, but it does not. Without planning, this can lead to ongoing tax bills that add up each year.

Cross-Border and Foreign Investment Complexity

For investors with cross-border investments, the risk of paying unnecessary tax goes up.

Issues commonly include:

• Missed foreign tax credits.
• Incorrect withholding on foreign dividends.
• Incomplete reporting of foreign assets.

The CRA requires disclosure of specified foreign property above certain thresholds and allows foreign tax credits to reduce double taxation when properly claimed (Canada Revenue Agency, 2024e). The IRS imposes similar reporting and credit mechanisms through foreign tax credit rules and information filings (Internal Revenue Service, 2024f).

If these rules are not fully included in investment planning, investors might pay tax twice on the same income or face penalties that could have been avoided.

Why These Issues Persist Even With Professional Advice

From a CPA perspective, these outcomes usually stem from segmented decision-making:

• Investment decisions are made without tax input.
• Tax compliance is handled after the fact.
• Planning conversations occur too late in the year to affect outcomes.

Tax optimization usually doesn’t come from just one tactic. It happens when investment strategy, account structure, income type, and timing all work together.

Moving From Compliance to Strategy

The answer isn’t aggressive tax planning. It’s making sure your investments and tax planning are aligned on purpose.

Effective steps include:

1. Reviewing after-tax, not pre-tax, returns.
2. Matching income types to appropriate account structures.
3. Coordinating realization events with broader tax planning.
4. Revisiting strategies annually as tax rules and personal circumstances change.

If your investment performance is being evaluated primarily on a pre-tax basis, you may be paying more tax than necessary without realizing it.

We recommend scheduling a proactive tax planning review with SAV Associates that looks beyond compliance and focuses on:

• Income type
• Account structure
• Timing of realizations
• Cross-border considerations, where applicable

Tax efficiency doesn’t have to be complicated. It just requires careful planning.

References

Canada Revenue Agency. (2023). Taxation of investment income. https://www.canada.ca
Canada Revenue Agency. (2024a). Capital gains. https://www.canada.ca
Canada Revenue Agency. (2024b). Registered plans overview. https://www.canada.ca
Canada Revenue Agency. (2024c). Capital losses. https://www.canada.ca
Canada Revenue Agency. (2024d). Dividend income. https://www.canada.ca
Canada Revenue Agency. (2024e). Foreign tax credits. https://www.canada.ca

Internal Revenue Service. (2024a). Interest income. https://www.irs.gov
Internal Revenue Service. (2024b). Capital gains and losses. https://www.irs.gov
Internal Revenue Service. (2024c). Retirement plans. https://www.irs.gov
Internal Revenue Service. (2024d). Capital loss deductions. https://www.irs.gov
Internal Revenue Service. (2024e). Dividends and distributions. https://www.irs.gov
Internal Revenue Service. (2024f). Foreign tax credit. https://www.irs.gov