Tax on Income Splitting (TOSI) in Canada - 2020

Income Splitting

No one wants to pay more taxes than they have to, that is why many Canadian taxpayers might choose to alleviate some of the tax burdens through a practice called “Income Splitting”.

Canada Revenue Agency’s (CRA) definition of Income Splitting

Income sprinkling – sometimes referred to as “income splitting” – is a strategy that can be used by high-income owners of private corporations to divert their income to family members with lower personal tax rates.

In simple words, income splitting is the transferring of income from a high-income family member to a lower-income family member to minimize the overall tax paid by the family. Since the Canadian tax system has graduated tax brackets, by having the income taxed in the lower-income earner’s hands, the overall household’s tax liability can be reduced.

Income Splitting Eligibility

At the federal level, you can continue to split income with your spouse or common-law partner, regardless of your age, as long as the retirement income is eligible. To qualify to split income, you and your spouse or common-law partner must reside in Canada and live together. The couple must live together for at least one year and not have been separated for more than 90 days at the end of the tax year. However, you can live apart if the reason is related to work, school, or medical necessity.

Income Splitting Rules

Income splitting is an electable action that you opt-in every year you file your taxes. 

Recent changes to income tax rules expand the application of the Tax on Split Income (TOSI). Previously, TOSI only applied to split income of individuals under 18 years old. Now, TOSI applies the highest personal marginal tax rate (currently 33%) to any split income, regardless of age. This means income splitting with adult children or spouses is now subject to TOSI.

The goal of expanding TOSI is to limit income tax benefits when the recipient has not substantially contributed to a family business. The federal government has reduced corporate tax planning options, but some remain to mitigate tax liability. Taxpayers should understand the new TOSI rules and consult a tax professional about permissible income splitting and tax reduction strategies.

Income qualifying for TOSI

The TOSI rules will potentially apply if business owners or their family members earn the income types mentioned below:

  • Dividends and shareholder benefits from the private company.
  • Income received from a partnership or trust where the income was derived from a related business or the rental property in certain cases.
  • Income on certain debt obligations for example interest.
  • Income or gains from the disposition of private shares or other property with historical TOSI.

Exclusions from TOSI

Although income splitting is greatly restricted as a result of the expanded TOSI rules, some exceptions still allow individuals to benefit from income splitting with immediate family members (parents, child, or sibling, not an aunt, uncle, nephew, or nieces).

Excluded Business Gains

The first exception relates to the contribution of the family member to the business. If the family member receiving the income is over 18 years of age and is engaged in the business on a regular, continuous, and substantial basis, the TOSI rule may not apply.

Being engaged on a “regular, continuous, and substantial basis” is demonstrated when the respective family member hits the threshold of having worked in the business for an average of at least 20 hours per week in the current tax year, or in five previous tax years. The five years need not be in succession. Satisfying these requirements, any dividends received by a family member will not be subject to TOSI.

Providing evidence of sufficient engagement in the business may be challenging. However, obtaining all the possible information will help demonstrate the sufficient involvement of a family member in the business. 

Excluded Shares

To claim an exclusion from TOSI for the shares held by a family member, the individual must be at least 25 years of age and hold shares that represent at least 10% of the corporation (in votes and value), and 90% of the corporation’s income must be earned from a provision of services. This exclusion is applicable if the shares held by the individual must not be shares of a professional corporation for example law or accounting firms, or dentistry and physician clinics.  

Reasonable Returns

If a family member is 25 years of age or older, it is possible to pay him/her a reasonable amount of income in the form of dividends representing a reasonable return on their contribution to the business, which would be excluded from TOSI. However, CRA does not guide what it deems reasonable. The reasonable test considers contributions to the business through a combination of the work performed by the individual in the business, the property contributed by the individual to the business and, the risks that the individual has taken concerning the business.

All these measures are subjective to how CRA will assess them as no clear definition of reasonable return is provided. 

Age Exclusion

If the professional owner is over the age of 65 years and split income with a spouse or common-law partner regardless of the age of the spouse or common-law partner, the TOSI rules will not apply. This exemption is available only to the spouse or common-law partner, no other family member qualifies for it.


When your marginal tax rate differs significantly from those of your family members, it’s worth considering some income splitting strategies. Despite the expanded TOSI rules, there are strategies available to Canadians to work out a tax cut. Often, the difficulty lies in knowing which strategies would work best for you, here Filing Taxes plays a role to advise and help you.

The TOSI rules are extraordinarily complex, and many nuances are not discussed in this article. It is advisable to seek guidance from a tax expert about your specific business situation to determine how the TOSI rules will impact your business. If you have any questions, feel free to reach out to Filing Taxes at 416-479-8532. Schedule an NTR engagement appointment with us and take the first step towards proper management of your finances.

Disclaimer: The information provided on this page is intended to provide general information. The information does not consider your personal situation and is not intended to be used without consultation from accounting and financial professionals. Salman Rundhawa and Filing Taxes will not be held liable for any problems that arise from the usage of the information provided on this page.

Written By:
Salman Rundhawa
Salman Rundhawa is the founder of Filing Taxes. Salman provides valuable tax planning, accounting, and income tax preparation services in Toronto, Mississauga, Oakville, and Hamilton.

Leave a Reply

Your email address will not be published. Required fields are marked *

June 5, 2024
Estate Planning Strategies - Guide by an Accounting Firm

Estate planning in Canada involves preparing for the management and distribution of a person's estate after their death. It ensures that the individual's wishes are honored, minimizes taxes, and provides for the needs of their beneficiaries. Death and taxes are two certainties in life, and taxes are also a certainty in death. But when it […]

Read More
May 24, 2024
How to Minimize Taxes on RRSP

A Registered Retirement Savings Plan (RRSP) can represent a key source of future retirement income for many people in Canada. Funding a registered retirement savings plan (RRSP) is a solid option when you’re preparing for retirement. But after years of contributing to your RRSP, you might start to think about withdrawing some or all of that money, […]

Read More
May 24, 2024
What Happens If I Don't File My Tax Returns in Canada

There are many probable consequences related to unfiled tax returns in Canada. Failing to file your tax returns in Canada can have various consequences, ranging from financial penalties to legal actions. Here are some potential repercussions of not filing your tax returns: Late Filing Surcharge The late filing surcharge is a penalty fee when an […]

Read More
1 2 3 23
Contact Form Demo

This will close in 0 seconds

phone-handsetchevron-down Call Now linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram