Income splitting is a tax strategy that allows families to move income from higher-earning members to lower-earning members in lower tax brackets to reduce the overall family tax burden. However, since 2018 the Tax on Split Income (TOSI) rules and attribution provisions have limited these opportunities.
What Is Income Splitting?
Income splitting involves transferring income from a family member who is taxed at higher rates to a family member who is in a lower tax bracket. Canada’s progressive tax system means higher earners pay increasing tax rates on additional income, so this can be valuable for families with big income disparities.
For example, if one spouse earns $150,000 and the other earns nothing, splitting that income to $100,000 and $50,000 respectively could save around $14,226 per year in taxes.
Attribution Rules: The Main Obstacle
Attribution rules are the backbone of Canada’s anti-income splitting legislation, designed to prevent families from shifting income to lower tax rate members. These rules are broad and complex, and catch both obvious and subtle attempts to move income for tax purposes.
Spousal Attribution Rules
Core Principle: When property is transferred or loaned to a spouse below fair market value, any income and capital gains from that property are attributed back to the transferring spouse.
Direct Transfer Example
Scenario: John (45% tax rate) transfers $50,000 cash to his wife Mary (25% tax rate). Mary invests in dividend-paying stocks, earning 4% per year.
Without attribution rules, hypothetically Mary would pay $500 in taxes (25% of $2,000 dividends). The family saves $400 per year instead of John paying the tax.
With attribution rules, the actual outcome is John pays $900 in taxes (45% of the same $2,000 dividends). Mary reports $0 despite being the legal owner, and the additional family tax cost is $400 per year.
This illustration shows how attribution rules prevent the most basic form of income splitting by ensuring income is taxed at the original earner’s higher rate.
Indirect Transfer Example
Scenario: Sarah (43% tax rate) pays all $60,000 in household expenses, allowing her husband Michael (30% tax rate) to invest his entire $60,000 salary in bonds earning 3% interest.
Analysis: The annual interest earned on investment is $1,800. This is an indirect transfer under attribution rules because Sarah effectively transferred $60,000 of purchasing power to Michael. The result is Sarah must report the $1,800 interest income and pay $774 in tax vs. $540 if Michael could claim it.
The Canada Revenue Agency (CRA) targets these arrangements where one spouse’s expenses are paid by the other, thereby freeing up funds for investment.
Capital Gains Attribution
Scenario: David transfers a rental property (cost basis $200,000) to his wife Lisa. Two years later Lisa sells the property for $250,000.
Attribution Impact: Capital gain on sale of property is $50,000 and taxable capital gain (50% inclusion) is $25,000. Both the rental income earned during ownership AND the capital gain are attributed to David. Lisa reports nothing despite executing the sale.
This dual attribution (income + capital gains) makes spousal transfers particularly restrictive compared to transfers to minor children.
Minor Child Attribution Rules
Key Difference: Only income is attributed back to parents, while capital gains remain with the minor child (under 18 years old).
Income Attribution Example
Scenario: A parent transfers $25,000 to their 16-year-old child, who invests in GICs earning 3.5% per year.
Attribution Result: Annual GIC income is $875. The parent must report $875 as income and pay tax at their 40% rate, totalling $350. The child reports $0 income despite being the legal owner.
Capital Gains Stay with Minor
Scenario: A parent transfers growth stocks to a 17-year-old child. The child sells stocks, realizing a $8,000 capital gain.
No Attribution Result: Taxable capital gain on sale of stock is $4,000 (50% inclusion). The child reports the gain and not the parent. Since the child likely has no other income, gain may be tax-free due to basic personal exemption. This creates a legitimate tax planning opportunity.
Attribution Stops at Age 18
Critical Timing: Attribution rules cease completely when the child turns 18.
Example: A child turns 18 on June 1st during the tax year, with investment property transferred when the child was age 16.
Split-Year Treatment: From January 1 to May 31, the income is attributed to the parent. From June 1 to December 31, income is taxed to the child. From 18 and up, no attribution applies to any income or capital gains.
Substituted Property Rules
The purpose is to prevent asset swapping or reinvestment.
Chain of Substitutions Example
Scenario: Tom gives $10,000 to spouse Jennifer. Jennifer does the following:
- Buys $10,000 of Bank A shares
- Receives $400 dividend
- Sells shares for $10,500
- Buys $10,500 of mutual fund units
- Mutual fund pays $300 distribution
Attribution Results: $400 dividend, $500 capital gain, and $300 mutual fund distribution are attributed to Tom, totalling $1,200. Jennifer reports $0 income despite doing all the transactions.
The substituted property rules ensure attribution continues through multiple generations of asset replacements and is not to be circumvented.
Using Attributed Income to Pay Investment Loans
Complex Scenario: Wife borrows $30,000 to invest and earns $2,000 attributed to her husband. She uses the attributed income to pay down the loan over three years.
Attribution Paradox: The husband pays tax on $6,000 total attributed income, and the wife benefits from a $6,000 loan reduction using attributed income. There are no cash benefits for the husband.
Anti-Avoidance Rules
Back-to-Back Transactions
Subsection 74.5(6) of the Income Tax Act prevents third-party intermediaries. For example, John gives $100,000 to his brother, who gives it to John’s wife Mary. The result is a deemed direct transfer from John to Mary, and the attribution rules apply as if John gave directly to Mary. Third-party insertion doesn’t avoid attribution.
Corporate Attribution
When property is transferred to a corporation that benefits family members, attribution may still apply. Using an estate freeze example, an individual exchanges common shares for preferred shares in a family corporation where the spouse and minor children are beneficiaries through a trust. The result is that corporate attribution rules may apply and income may be attributed back to the original shareholder. It requires careful planning to avoid double taxation.
Attribution Rule Exceptions
Canada’s attribution rules make income splitting challenging, but two main exceptions provide legitimate ways for families to reduce their tax burden. These exceptions require strict compliance with specific rules and proper documentation.
Fair Market Value Transfers
Core Principle: Attribution rules don’t apply when property is transferred for full fair market value consideration. This exception treats the transaction as a commercial exchange and not income splitting.
Example 1: Spousal Share Transfer at Fair Market Value
Scenario: John owns shares worth $100,000 (adjusted cost base $60,000) and gives them to his wife Lisa for a $100,000 promissory note bearing 4% interest.
Immediate Tax Consequences: John (transferor) must recognize a $40,000 capital gain on transfer, resulting in $18,000 tax on the $20,000 taxable capital gain (50% inclusion rate). Lisa (transferee) acquires shares with a $100,000 cost basis.
Ongoing Tax Treatment: Lisa receives $6,000 in annual dividends and pays $4,000 interest to John. No attribution applies, and Lisa pays tax on the $6,000 dividends at her 25% rate. John pays tax on $4,000 interest income at his 45% rate. The net family benefit is that the future dividend growth is taxed at Lisa’s lower rate.
Requirements: The transfer must be at true fair market value, and the interest rate must be equal to or greater than the prescribed rate. Interest must be paid by January 30th each year and proper documentation is required.
Example 2: Real Estate Transfer with Professional Appraisal
Scenario: Sarah transfers rental property to husband Michael based on a professional appraisal showing a fair market value of $800,000 (her cost base is $600,000).
Transfer Mechanics: Michael provides an $800,000 promissory note at a 3% prescribed rate. The annual interest payment is $24,000. The property generates $42,000 in annual rent and $8,000 in expenses, resulting in a net rental income of $34,000.
Tax Analysis: Sarah pays tax on $200,000 capital gain ($47,000 tax) plus $11,280 annual tax on interest income received. Michael reports $34,000 rental income, claims a $24,000 interest deduction, and pays $3,200 tax on net $10,000 income. The result is all future rental income and property appreciation are taxed to Michael at his lower 32% rate vs. Sarah’s 47% rate.
Appraisal Requirements: Independent qualified appraiser with no financial interest and has sufficient industry knowledge and experience. A written report with methodology and market comparables is required, with a price adjustment clause included to protect against CRA challenges.
Example 3: Election Out of Spousal Rollover
Standard Spousal Rollover: Transfers between spouses normally occur at the transferor’s adjusted cost base with no immediate tax consequences, but attribution rules apply to all future income and gains.
Election to Transfer at FMV: Attach a signed letter to the tax return by the filing deadline. The election can be made on a property-by-property basis, and it triggers immediate capital gains but eliminates attribution. Once the election is filed, it cannot be revoked.
Strategic Considerations: The election is beneficial when you have unused capital gains exemption or loss carryforwards. Consider the timing with other tax planning strategies and weigh the immediate tax cost against long-term attribution avoidance.
Prescribed Rate Loan Strategy
Mechanism: Family members can lend money at the CRA prescribed rate without triggering attribution rules, allowing investment returns above the prescribed rate to be taxed in the borrower’s hands.
Example 1: Standard Spousal Prescribed Rate Loan
Scenario: A high-earning spouse loans $200,000 to a lower-earning spouse at a 3% prescribed rate. The borrower invests in a balanced portfolio earning 6% annually.
Annual Cash Flows: Investment income is $12,000 and the interest payment required is $6,000, resulting in $6,000 net income taxed to the borrower.
Tax Analysis: The lender pays $2,880 tax on $6,000 interest income (48% rate). The borrower pays $3,360 in tax on $12,000 investment income (28% rate). The family’s total tax is $6,240 vs. $5,760 if the high earner kept all income.
Break-Even Analysis: The strategy becomes beneficial when investment returns significantly exceed the prescribed rate plus the tax rate differential. With current rates, investments need to generate approximately 7-8% returns for meaningful tax savings.
Example 2: Family Trust for Minor Children
Scenario: A parent loans $300,000 to the family trust at a 3% prescribed rate. The family trust invests in growth stocks earning 8% and distributes income to the three minor children.
Benefits: Trust income is $24,000 and interest paid to the parent is $9,000 (taxed at 45%). Net distributable income is $15,000 and the per-child distribution is $5,000.
Tax Efficiency: Each child gets $5,000 (below the $15,000 personal exemption) and as a result, no tax is payable by any of the children. The parent pays tax only on $9,000 interest income, and the family tax savings is $6,750 annually vs. the parent earning all income directly.
Additional Benefits: Income can fund the children’s education and expenses. The family trust provides flexibility in distribution timing and allows multiple beneficiaries to maximize tax efficiency.
Prescribed Rate Loan Documentation
The following items are required for documentation:
- Written promissory note or loan agreement
- Lender and borrower names clearly identified
- Principal amount
- Interest rate (prescribed rate when loan is established)
- Payment terms (interest due by January 30th annually)
- Reference to Income Tax Act subsection 74.5(2)
- Signatures and dating
Sample Promissory Note:
“FOR VALUE RECEIVED, the undersigned [Borrower] promises to pay [Lender] the principal sum of $[Amount] together with interest at [Rate]% per annum, being the prescribed rate for purposes of subsection 74.5(2) of the Income Tax Act (Canada). Interest shall be paid by January 30th of the year following each year in which interest accrued.”
Compliance Obligations
Interest must be calculated for the calendar year (January 1 to December 31), and interest payment is due by January 30th following each tax year. The loan cannot be paid on the loan anniversary date and any late payment permanently destroys the income splitting benefit.
Example of Calculation Error: A loan is established on July 15 at $100,000 and 1% rate and the borrower waits until the July 15 anniversary and pays $1,000 in annual interest. The correct way to do it is to pay $463 interest by January 30th (169 days ÷ 365 days × 1% × $100,000).
Record Keeping Requirements: Bank records showing actual fund transfers, interest payment records, loan agreements, investment statements in the borrower’s name, and tax returns showing interest income and deductions.
Consequences of Non-Compliance
Missed Interest Payment: Attribution rules apply permanently for that year and all future years and it can’t be cured by subsequent payments. The loss of tax benefits is retroactive to the year of default.
Insufficient Documentation: The CRA may deny strategy and apply attribution rules. The burden of proof is ultimately on taxpayers to demonstrate compliance.
Advanced Planning Strategies
Rate Lock-In Opportunity
Low prescribed rates in the current environment create opportunities for income splitting.
Timing: Establish loans when prescribed rates are low because the rate is locked in for the life of the loan. Once the rate is locked in, it can’t benefit from future rate decreases without creating a new loan. The loan must be fully repaid, and a new loan needs to be re-established to access lower rates.
Multi-Generational Planning
Family Trust Structure: A grandparent loans $500,000 to the family trust at a 3% prescribed rate, benefiting multiple children and grandchildren.
Annual Economics: The family trust earns investment income at 6% for $30,000. The interest to the grandparent is $15,000 and the net distributable income is $15,000. The family tax bill is reduced by $7,200 annually through income splitting across five beneficiaries.
Flexibility: Income can be distributed based on the beneficiary’s tax situation. The family trust can accumulate income in low-tax years and multiple generations benefit from a single loan structure.
Decision Framework
When to Use Fair Market Value Transfers
Here are the best scenarios to use fair market value (FMV) transfers:
- Permanent transfer of asset growth is desired
- Assets have low unrealized gains (minimize immediate taxes)
- Receiving spouse has funds or assets for adequate consideration
- Certainty that attribution won’t apply is critical
- High growth assets are involved
When to Use Prescribed Rate Loans
Here are the best scenarios for using prescribed rate loans:
- When prescribed rates are low
- The expected investment returns exceed the prescribed rate
- Desire flexibility to demand loan repayment
- Comfortable with annual compliance obligations
- Want to retain ownership of transferred funds
Combined Approach
Use a combined approach for portfolio optimization:
- Use FMV transfers for appreciating real estate (permanent growth transfer)
- Use prescribed rate loans for securities (flexibility retained)
- Apply different strategies to different asset classes based on characteristics
- Maximize income splitting within the attribution rule framework
The attribution rule exceptions are powerful tools for income splitting when done correctly, but their complexity requires professional guidance from a CPA accounting firm and ongoing compliance to preserve the tax benefits.
Tax on Split Income (TOSI) Rules
Tax on Split Income (TOSI) rules were expanded in 2018 to curb income sprinkling by private business owners. Under TOSI, certain passive or related-party income received by adults from a private corporation, partnership, trust, or loan is taxed at the top combined federal and provincial marginal rate (approximately 53.53%) unless an exemption applies.
Types of “Split Income” Subject to TOSI
- Dividends from Private Corporations: This includes eligible and non-eligible dividends paid by a private corporation to a related adult. The purpose is to prevent owners from shifting corporate earnings to family members at lower tax rates.
- Partnership Income from Related Businesses: This includes the allocation of business income, including active and passive streams, to partners who are related to other partners. It targets situations where profits are allocated to relatives.
- Trust Income from Related Sources: This includes distribution of income (interest, dividends, capital gains) from trusts in which the recipient is related to the settlor or trustee. It applies even if the trust is supposedly independent.
- Interest from Related-Party Loans: This includes interest, subsidies, or forgiveness of interest on loans from private corporations or individuals who are related. It captures arrangements where loans are structured to shift taxable income to family members.
Exemptions from TOSI
Labour Exemption: 20-Hour Rule
A recipient’s split income is exempt to the extent they work at least 20 hours per week in the business in the current year or in any of the five preceding years. This applies to 18-24 year olds as well as older family members.
The rationale of this rule is to recognize a genuine business contribution. The documentation required is timesheets and payroll records.
Capital-Return Exemption: Reasonable Return on Contributed Capital
Split income up to a capital return allowance is exempt if it represents a reasonable return on the recipient’s actual contributed capital.
The calculation is: contributed capital x CRA prescribed rate
The purpose is to allow a fair return on bona fide investments without penalizing family-based capital contributions.
Age-65 and Over Exemption
Residents aged 65 or older at year-end who receive certain types of split income, such as dividends, interest, and capital gains, are exempt from TOSI if they meet other specified conditions (e.g., not receiving income from a “personal services business”).
The policy goal of this exemption is not to penalize seniors who rely on family business income for retirement.
Excluded Business Exemption
Income from an “excluded business” is exempt if the business employs at least five full-time non-related employees (or the recipient’s labour expense exceeds 50% of total labour expenses) and pays them fair market wages.
The effect of this exemption allows family members to receive income without TOSI if the business operates at arm’s length.
Interaction and Ordering of Exemptions
- First, apply the labour exemption, which exempts all income up to the extent of the 20-hour rule.
- Second, apply the capital-return exemption on the remaining split income.
- Third, if the recipient is 65+, apply the senior exemption to any residual income.
- Finally, if the business is an excluded business, no TOSI applies to any of the recipient’s income from that entity.
Here’s an example flow:
- A 30-year-old working 25 hours/week in a family farm (excluded business) with contributed capital will have no TOSI.
- A 70-year-old with no labour contribution will still be exempt under the 65+ rule up to certain income types.
Practical Implications and Planning
- Compliance Burden: Meticulous record-keeping of work hours, capital contributions, and payroll for non-related employees is crucial.
- Capital Structuring: Families can allocate capital contributions to achieve optimal capital-return allowances.
- Timing Considerations: Young family members can accumulate capital gains in a trust for minors (not subject to TOSI) until they turn 18 and become adult children.
- Business Structuring: Operating an excluded business (hiring arm’s-length staff) can increase TOSI-free income opportunities for family members.
By understanding TOSI’s broad scope and its detailed exemption framework, family businesses can split income legitimately while being compliant and minimizing tax risk.
Legitimate Income Splitting Strategies
While attribution and TOSI rules limit income splitting, there are legitimate ways to reduce a family’s overall tax burden. Below are the main approaches, each with an example.
Pension Income Splitting
Couples can split up to half (50%) of eligible pension income for tax purposes, reducing the higher-income spouse’s taxable income and shifting it to the lower-income spouse.
Eligible income types include Registered Retirement Income Fund (RRIF) withdrawals (after age 65), registered pension plan payments (any age), annuity payments from RRSPs (age 65+), and life annuity payments.
The requirements are that both you and your spouse must be Canadian residents and living together (exceptions for work, school, or medical reasons). Both of you must jointly elect to file CRA Form T1032 by the tax-filing deadline.
For example, Alice (age 67) receives $80,000 in RRIF payments and Bob (age 65) receives none. Both spouses file Form T1032 to split $20,000 of Alice’s RRIF income to Bob.
Before splitting, Alice is taxed on $80,000 income with tax payable of $24,650, while Bob is taxed on $0 income with no taxes. The family has a total tax liability of $24,650.
After splitting, Alice is taxed on $60,000 income with tax payable of $16,650 and Bob is taxed on $20,000 income with tax payable of $5,000. The family’s total tax payable is $21,650, which results in tax savings of $3,000 annually.
Spousal RRSPs
The higher-earning spouse makes Registered Retirement Savings Plan (RRSP) contributions “in-name-only” for the lower-earning partner or spouse. The contributor gets the immediate tax deduction and the withdrawals are taxed in the recipient spouse’s hands.
Here are the key benefits:
- Can split more than 50% of retirement income
- Allows any-age contributions, but withdrawals are subject to the 3-year attribution rule
- Provides flexibility in deciding how much retirement income to split
Due to the income splitting rules, withdrawals within 3 years of a contribution revert the tax deduction back to the contributing spouse.
For example, Carol (high earner) contributes $30,000 to a spousal RRSP for Dan (low earner). Carol claims a $30,000 deduction now to lower her taxable income and Dan withdraws $30,000 five years later in retirement.
The tax result: Dan is taxed on the $30,000 at his lower marginal rate (e.g., 25%), whereas Carol would have been taxed at a higher rate (e.g., 43%) if she withdrew it herself. It saves $5,400 in taxes.
Business Income Splitting
Business owners can split corporate income in compliance with attribution and TOSI rules through salaries, dividends, and loans tied to genuine work and capital contributions.
Reasonable Salaries
The business owner can pay family members a “reasonable salary” for actual work performed. Salaries are deductible to the corporation and taxed in the employee’s hands.
For example, Ethan’s corporation pays his daughter Fiona a $50,000 annual salary for bookkeeping (40 hrs/week). Fiona pays tax at 25% which equals $12,500. Ethan avoids paying 43% tax on that $50,000, which equals $21,500. It saves $9,000 in combined family tax.
Dividend Payments Under TOSI Exemptions
The business can pay dividends to family members who meet TOSI exemptions (e.g., 20 hrs/week work or reasonable return on capital).
For example, the corporation declares a $40,000 dividend to Grace, who works 30 hrs/week. This is exempt from TOSI. She’s taxed at her 28% rate rather than 53.53%, which saves $10,212.
Business-Purpose Loans
The corporation can loan funds to family members for business investment purposes. The business income isn’t subject to attribution if used within the corporation.
For example, the corporation loans $100,000 to Henry to expand operations and charges market interest. Henry uses the funds for legitimate business expenses and no attribution applies.
CPP/QPP Sharing
Spouses or common-law partners can share Canada Pension Plan (CPP) or Quebec Pension Plan (QPP) benefits based on their combined contribution periods, regardless of age.
The mechanics are to file joint Form ISP1000 (for CPP) or TP-1100.D-V (for QPP). Spouses or common-law partners can split up to 50% of combined retirement pension amounts.
For example, Irene and Jack both contributed one year to CPP while living together. Irene’s pension is $15,000 and Jack’s pension is $5,000. They elect to share a combined pension of $20,000, each receiving $10,000. Irene reduces her tax by shifting $5,000 of income to Jack’s lower bracket, reducing the overall tax bill by $1,200.
What Can’t Be Split
Certain types of income are not eligible for any splitting, which include:
- Old Age Security (OAS) payments
- Canada Pension Plan (CPP) benefits (except sharing)
- Quebec Pension Plan (QPP) benefits (except sharing)
- RRSP withdrawals (unless converted to an annuity and split under pension rules)
- Employment Insurance (EI) benefits
Trying to split these payments will trigger attribution or be disallowed by CRA rules.
Planning Tips
Income splitting in Canada works best when there’s a big income gap between spouses. The tax savings increase with larger income gaps and higher marginal tax rates.
However, the complexity of TOSI rules and attribution provisions means you should get professional tax advice before implementing any income splitting strategy. Mistakes can result in income being taxed at the highest marginal rate, thereby eliminating any benefits.
While income splitting opportunities have been reduced since 2018, there are still effective strategies available, especially for retirement planning and business owners who understand the rules and exemptions.
