One of the most common misconceptions I encounter as a CPA is the belief that “income is income” when it comes to tax. In reality, how your investment dollars are earned matters enormously. A dollar of interest, a dollar of eligible dividends, and a dollar of capital gain are each taxed in a meaningfully different way — and understanding those differences is the foundation of tax-efficient investing. On top of that, if your portfolio includes foreign holdings, there’s a reporting form that catches more Canadians every year and carries surprisingly steep penalties. This article walks through all four.

Interest Income: The Plainest — and Least Favourable — Treatment

Interest income is the simplest to understand and, for most investors, the most heavily taxed. Interest from a savings account, a GIC, a bond, or similar sources is fully taxable at your marginal rate, with no preferential treatment. If you earn $1,000 in interest and your combined federal-provincial marginal rate is, say, 43%, you keep roughly $570.

There’s also a timing wrinkle that surprises people: accrued interest on most debt instruments must be reported annually, even if you haven’t actually received the cash yet. A multi-year compounding GIC that pays out only at maturity still generates taxable interest each year along the way. You’ll typically receive a T5 slip reporting interest of $50 or more, though you’re required to report all interest income regardless of whether a slip was issued.

Because interest gets no break, it’s the income type most worth sheltering inside a registered account where possible — a point I’ll return to at the end.

Capital Gains: Half-Taxed, and the Rate Is Staying Put

A capital gain arises when you sell an investment — a stock, a fund, a property — for more than its adjusted cost base. The defining feature of capital gains is the inclusion rate: only a portion of the gain is added to your taxable income.

This is the area where there’s been enormous confusion over the past two years, so let me be clear about where things actually stand. In its 2024 budget, the federal government proposed raising the inclusion rate from one-half to two-thirds for gains above $250,000. That proposal was deferred, and then cancelled entirely on March 21, 2025. The inclusion rate remains at 50% for everyone, regardless of income level or the size of the gain. If you reorganized your portfolio or rushed to sell assets in 2024 to “beat” the increase, you were preparing for a change that never became law.

So the math is straightforward: realize a $10,000 capital gain, include $5,000 in your taxable income, and pay tax on that $5,000 at your marginal rate. At a 43% marginal rate, the tax is roughly $2,150 — an effective rate of about 21.5% on the full gain. That’s substantially better than the $4,300 you’d pay on $10,000 of interest at the same rate.

Two related items worth knowing. First, the Lifetime Capital Gains Exemption (LCGE) — which shelters gains on qualifying small business corporation shares and qualified farm or fishing property — was increased to $1.25 million, and for 2026 it sits at $1,275,000 with indexation continuing. This is the one change from the 2024 budget saga that did take effect. Second, capital losses can be used to offset capital gains; they can be carried back three years or forward indefinitely, which makes loss harvesting a useful planning tool.

Dividends: The Gross-Up and Tax Credit System

Dividends are where Canadian tax gets genuinely intricate, because of a mechanism called integration. The idea is that corporate profits are taxed once at the corporate level, and the dividend system tries to ensure that when those after-tax profits are paid out to you, the combined corporate-plus-personal tax roughly equals what you’d have paid earning the income directly. To achieve this, dividends from Canadian corporations are “grossed up” and then offset by a dividend tax credit (DTC).

There are two categories, and the distinction matters:

Eligible dividends generally come from public corporations and larger private companies, paid out of income taxed at the general corporate rate. They’re grossed up by 38% (so a $1,000 dividend becomes $1,380 of taxable income), and they receive a federal DTC of 15.0198% of the grossed-up amount, plus a provincial credit.

Non-eligible dividends (also called “other than eligible”) typically come from small businesses — Canadian-controlled private corporations paying out of income taxed at the lower small business rate. They’re grossed up by 15% (so $1,000 becomes $1,150 taxable), with a smaller federal DTC of 9.0301% of the grossed-up amount, plus a provincial credit.

The practical upshot is that eligible dividends are taxed quite favourably — at many income levels, more favourably than capital gains, and at low income levels the credits can reduce the tax to zero. Non-eligible dividends carry a heavier burden because less corporate tax was paid on the underlying income.

There’s a subtlety I always flag to clients, though: the gross-up inflates your reported taxable income beyond the cash you actually received. That higher reported income can have knock-on effects on income-tested benefits — it can erode Old Age Security through the recovery tax (the “OAS clawback”) and reduce the Canada Child Benefit, among others. So “eligible dividends are always best” isn’t a reliable rule; for a retiree near the OAS threshold, that gross-up can cost more than the credit saves. Dividends are reported on line 12000 of your return (with non-eligible amounts also captured on line 12010).

One more point that trips up investors: dividends from U.S. and other foreign corporations do not qualify for the Canadian dividend tax credit. They’re taxed as ordinary income at your full marginal rate, much like interest. You may be able to claim a foreign tax credit for any withholding tax deducted at source, but the favourable gross-up-and-credit treatment simply doesn’t apply.

Where You Hold Each Type Matters

Putting the three together leads to one of the most useful planning principles in personal finance: asset location. Because interest is fully taxed, it’s often the best candidate to hold inside an RRSP or TFSA, where it can grow without annual tax. Canadian dividend-paying stocks, by contrast, are frequently better held in a non-registered account, because the dividend tax credit is wasted inside an RRSP — withdrawals from an RRSP are eventually taxed as ordinary income, so the preferential dividend treatment is lost entirely. Inside a TFSA, all three income types are completely tax-free, with no reporting at all. There’s no single right answer for everyone, but matching income type to account type is one of the highest-value, lowest-effort moves available to most investors.

Foreign Property Reporting: Form T1135

Now to the form that catches more people every year. If you’re a Canadian resident and, at any point during the year, you owned specified foreign property with a total cost of more than $100,000 CAD, you must file Form T1135, the Foreign Income Verification Statement, along with your tax return.

A few features of this rule generate the most errors:

It’s based on cost, not market value. The $100,000 threshold uses the cost amount — generally your adjusted cost base — not what the property is worth today. Someone who bought foreign shares for $80,000 that are now worth $260,000 is below the threshold; someone who paid $110,000 for shares now worth $70,000 is above it and must file.

“Foreign” is broader than people expect. Specified foreign property includes shares of foreign corporations (think Apple, Microsoft, Meta) even when held in a Canadian brokerage account, foreign bonds and debt, interests in non-resident trusts (many U.S.-listed ETFs are structured as trusts), foreign rental real estate, and funds held outside Canada. This is the single most common misunderstanding I see: holding U.S. stocks through a Canadian broker does not exempt you.

Several things are excluded. Property held inside registered accounts (RRSP, RRIF, TFSA, RESP, RDSP, FHSA) doesn’t count. Neither do foreign securities held inside Canadian mutual funds, a U.S.-dollar account at a Canadian bank, or personal-use property such as a vacation home you use primarily yourself.

There are two reporting tiers. If your total cost is between $100,000 and $250,000, you can use the simplified method(Part A), checking boxes to summarize the types of property held. If your total cost is $250,000 or more at any time in the year, you must use the detailed method (Part B), listing each property with its cost, income, and gains. The form is generally due with your return (April 30 for most individuals, June 15 for the self-employed) and is normally filed electronically.

The Penalties Are Steep — and the Responsibility Is Yours

The reason I raise T1135 with every client who has foreign holdings is the penalty regime. The basic late-filing penalty is $25 per day, to a maximum of $2,500 per year — and that applies even if the property earned no income and even if all the related income was otherwise properly reported. Where the CRA considers the failure to be a knowing omission or gross negligence, the penalty jumps to $500 per month, up to $12,000. The CRA can also extend its reassessment period by an extra three years where a T1135 wasn’t filed or was incomplete.

Critically, the courts have repeatedly held that the obligation to file rests with the taxpayer, not the accountant. In recent Tax Court decisions, taxpayers who simply assumed their preparer had handled the form were still found liable for penalties. “Due diligence” means actively verifying that the form was filed — reviewing your return before it goes in, and confirming foreign holdings were captured. If you’ve missed a past filing, the Voluntary Disclosures Program may offer relief, but only if you come forward before the CRA contacts you about it.

The Bottom Line

The type of income your investments generate drives the tax you pay: interest is fully taxed, capital gains are half-taxed at the unchanged 50% inclusion rate, and Canadian dividends sit somewhere in between thanks to the gross-up and credit system — with foreign dividends getting no break at all. Match each income type to the right account, and you keep more of what you earn. And if any part of your portfolio is foreign, treat the $100,000 T1135 threshold as a bright line worth checking every year, because the penalties for missing it are entirely out of proportion to the effort of filing.

If you’d like to review how your own portfolio is structured across account types, or you’re unsure whether your foreign holdings trigger a T1135 obligation, a short conversation with your CPA is well worth the time.

Disclaimer

The information discussed in this article is general in nature and should not be construed as any sort of advice. If you have any particular questions regarding your personal tax situation, please reach out to sandeep@multanitax.ca.

Photo by Anne Nygård on Unsplash