Income Splitting and Attribution Rules for High-Net-Worth Families

This is the first in a 3-part series exploring Canada’s attribution rules. Learn how income transferred to a spouse or child can still be taxed in your hands, how these rules differ from TOSI, and how attribution changes by relationship (spouse, minor children, and adult family members). Upcoming articles will share CRA-compliant income-splitting strategies tailored for high-net-worth families seeking smarter tax planning.

There are situations where two families with the same income pay different amounts of tax because one family has income distributed equally, while in the other family, one earner has a very high income (subject to a higher personal income tax rate), and the other earner with lower income pays tax at a lower rate.

Income splitting means transferring income from higher-income family members to lower-income family members. The objective is that, as a family, you pay less tax overall. This blog focuses on family-owned enterprises and high-net-worth individuals looking to reduce their tax burden.

The government designs attribution rules to prevent or limit income splitting among family members, ensuring that income is taxed in the hands of the person who actually earned it.

However, there are still various strategies that one can employ to achieve income splitting and the overall lower tax for the family. But let’s first understand the basics of these rules.

Due to the complexity of attribution rules and their significant impact on business owners, high-net-worth individuals, and families, we are breaking this topic down into a three-part blog series:

This series aims to help you navigate these rules confidently and structure your finances to minimize tax exposure while remaining fully compliant. So, let’s dive in.

What is the meaning of income attribution rules?

Suppose you loan or gift a property to a family member. In that case, income generated from the property, such as investment income, capital gain, or losses earned on the property, might be attributed back to your income tax return rather than the person who earned that income.

Overview of Key Legal Provisions

The attribution rules in the Income Tax Act—specifically Subsection 74.1(1) for income transfers to a spouse, 74.1(2) for transfers to minor children, and 74.2 for capital gains—prevent shifting income or gains to lower-income family members. These provisions ensure that income or gains from transferred or loaned property may still be taxed in the hands of the original transferor. This is a key consideration in family tax planning.

Difference between business income, investment income and property income

Business income is earned through active involvement in operations like selling goods or providing services, characterized by regular and substantial participation. In contrast, investment income (also referred to as passive income) is passive and comes from owning assets, including dividends, interest, rental income, and capital gains. The Canadian Income Tax Act distinguishes these two because attribution rules mainly apply to investment income, meaning if business income is transferred to a spouse or minor child, it is attributed back to the original owner. In contrast, business income from active participation is exempt from these rules.

Within investment income, property income generally includes income from owning assets, such as rent, interest, dividends, and royalties. Capital gains, while also considered investment income, are treated separately under the Income Tax Act, as they arise from selling capital property like stocks, bonds, or real estate.

Difference between attribution rules and tax on split income (TOSI) rules

TOSI rules apply when you split income, like dividends from your corporation, with a family member who isn’t actively involved in the business. If TOSI applies, that income is taxed at the highest rate.

Attribution rules apply when you gift money or assets to a spouse or child, and the income or gains from those assets are taxed back to you.

For example, if you pay your adult child dividends from your company, which is not involved in the business, the Tax on Split Income (TOSI) rules may apply —potentially taxing the income at the highest marginal rate. On the other hand, if you give your spouse $50,000 to invest, any interest earned may be taxed in your name under attribution rules.

Which type of income is attributed back

What income is attributed back to you depends on the type of income and your relationship with the recipient. For instance, if you gift or loan (at low or no interest) a property to your spouse, any income (e.g., dividends, interest) or capital gains/losses may be attributed back to you.

If you gift or loan (at low or no interest) assets to a minor child, only property income (e.g., dividends, interest, rent) is attributed back to you—capital gains or losses are not attributed back and will be taxed in the minor’s hands.

No attribution rules apply if you gift assets to an adult child or another family member (e.g., a sibling or parent). However, suppose you loan assets to an adult child or another non-arm’s-length person at low or no interest with the primary purpose of reducing your taxable income. In that case, any investment income or losses may be attributed back to you. Capital gains or losses, however, are not attributed and remain taxable to the recipient.

A loan is considered a low-interest loan where the interest charged is less than the Canada Revenue Agency’s (CRA’s) prescribed rate.

For purposes of the attribution rules, a minor child includes a child, grandchild, niece or nephew under 18.

Dispositions on gifting or loaning property

Generally, if a property has appreciated, you can transfer it at a cost or adjusted cost base (ACB) to your spouse instead of the current market value. This transfer, called spousal rollover, defers the capital gain until your spouse sells the property. At that point, due to attribution rules, you report the capital gain in your income instead of your spouse’s because of attribution rules. However, where the transfer resulted in a loss, you might be unable to use those losses because of the superficial loss rules.

On the other hand, if you transfer or gift the property to another family member except for the spouse, it will be treated as a deemed disposition, and you will have to report a capital gain or loss based on the FMV of the property at the time of distribution. You will need to include this in your tax return. Any future gain or loss belongs to the family member.

What are superficial losses?

A superficial loss happens when you sell a property at a loss and then, within 30 days before or after that sale, you or an affiliated person (like a spouse or a company you control) buys the same or identical property. In this case, the loss is denied for tax purposes and added to the cost of the repurchased property instead, preventing you from claiming the loss immediately.

Exceptions to the application of attribution rules:

Attribution rules don’t apply when spouses separate due to a marriage breakdown, as long as they’ve lived apart for at least 90 days and the property transfer happens after the separation.

Similarly, emigrants (people who leave Canada and give up residency) are exempt from attribution rules on income or capital gains from the property they own—unless they specifically elect to have those rules apply.
The transferor is not a Canadian resident.
Fair market value (FMV) transfers are generally exempt from attribution rules because they are true business transactions. If you sell or loan property to a spouse or related person at FMV and charge interest (if it’s a loan) at the prescribed rate—paid annually on time—then income from that property won’t be taxed back to you.
Income earned or lost is realized in a period following the death of either the transferor or transferee.

Attribution Rules for Direct and Indirect Transfers to Trusts and Corporations Benefiting Related Parties

Attribution rules apply to direct and indirect property transfers to related individuals or entities. A direct transfer occurs when a taxpayer explicitly transfers ownership of assets—such as shares or real estate—directly to a spouse, minor child, or related trust. Indirect transfers involve more complex arrangements, where property is ultimately transferred through trusts or multiple intermediaries to benefit related individuals. In the context of corporations, if an individual transfers property to a corporation and a related person benefits from that transfer, such as a spouse or minor, the resulting income may also be attributed back to the original transferor. These rules prevent taxpayers from using trusts or corporate structures to avoid attribution and ensure income or gains are taxed in the hands of the original owner.

This concludes Part 1 of our series on attribution rules. In this section, we covered the key principles—what attribution rules are, how they apply depending on who the income is transferred to (e.g., spouse, minor child, adult child, or other family members), and how these rules differ from the Tax on Split Income (TOSI) provisions.

Now that we understand the basics, a common question arises: Do attribution rules mean that income splitting, or tax planning, is no longer possible? The answer is no. Despite these limitations, several legitimate and effective tax planning strategies are available, many of which are widely used by business owners and high-net-worth families.

In the following two parts of this series of blogs, we will explore those strategies in more detail. Click below to read about these strategies.

Contact us today to learn how we can help you and your family reduce tax burden while staying compliant with the tax laws. We serve clients from all parts of GTA (Toronto, Mississauga, Brampton, Oakville, Milton, etc.) and Ontario. Book a call by calling at 647-930-8130.

Additional Sources: CRA Websites:

Source Accounting Professional Corporation (CPA) is a reputed accounting firm in Mississauga, serving businesses across Toronto and the GTA. We offer corporate tax filing, bookkeeping, payroll solutions, and more. If you’re a business owner or professional—pharmacist, physician, realtor, or consultant—we can help with family tax planning and corporate tax filing. Call us at 647-930-8130 to book a consultation!

Disclaimer: The above contents are provided for general guidance only, based on information believed to be accurate and complete, but we cannot guarantee its accuracy or completeness. It does not provide legal advice, nor can it or should it be relied upon. Please contact/consult a qualified tax professional specific to your case.