Income Splitting

Definition

Income splitting is the legal shifting of income from a higher-bracket individual to a lower-bracket family member so the combined household tax bill is lower. The Income Tax Act contains several specific anti-splitting rules (attribution, TOSI, corporate attribution) that block informal splits. Legitimate splitting requires genuine economic substance: real work performed at reasonable rates, real ownership of property that produces the income, or a statutory splitting mechanism such as pension splitting or spousal RRSP contributions.

Key rules

• Spousal attribution (ITA s.74.1 and s.74.2): income and capital gains on property transferred or loaned to a spouse at less than FMV are attributed back to the transferor. A prescribed-rate loan from a higher-income spouse to a lower-income spouse, with interest actually paid annually by January 30, is the classic way to avoid attribution.
• Minor attribution (s.74.1(2)): income (not capital gains) on property transferred or loaned to a minor child is attributed back. Capital gains can be shifted.
• TOSI (s.120.4): applies top-rate tax to split income from a related private corporation received by a specified individual unless an exclusion applies. Dividends to non-working adult family members are the primary target.
• Reasonableness (s.67): salary paid to a family member must reflect actual work at a market rate. TOSI does not apply to salary.
• Pension income splitting (s.60.03): up to 50% of eligible pension income (RRIF and RPP after age 65, RPP at any age) can be elected onto a spouse's return.
• Spousal RRSP (s.146(5.1)): the higher-income spouse contributes to a spousal RRSP; income is attributed back if withdrawn within three years of any contribution.
• CPP pension sharing: up to 50% of CPP retirement benefits can be shared between spouses once both have reached age 60.
• FHSA and TFSA are not subject to attribution on property transferred to a spouse for contribution, which makes them useful for household-level planning.

Example

A BC family has one spouse earning $250,000 from a CCPC and the other spouse earning $0. Three legitimate splitting moves in 2026:

1. Salary for real work in the corporation
   Spouse performs 15 hours/week of genuine bookkeeping and admin
   Market rate $35/hour x 15 x 50 weeks = $26,250 salary
   T4 issued, CPP remitted, s.67 reasonable
   Net tax saving vs. leaving income with higher spouse: ~$7,000

2. Prescribed-rate loan for investment income
   Higher spouse lends $200,000 to lower spouse at CRA prescribed rate
   Lower spouse invests, earns $10,000 of dividends and interest
   Interest actually paid by January 30 each year, so attribution does not apply
   Income taxed at lower spouse's rate instead of 54%

3. Pension income splitting in retirement
   Later, once the higher spouse is 65 with RRIF income of $60,000
   Elect to split up to $30,000 onto lower spouse's return
   Saves several thousand dollars per year at typical RRIF levels

A dividend to the non-working spouse from the CCPC, in contrast, would fail TOSI unless the excluded shares or reasonable return exclusion applied.

Common mistakes

• Paying a spouse a flat "salary" with no time records or job description. The CRA disallows under s.67.
• Gifting investment capital to a spouse and ignoring attribution.
• Running a prescribed-rate loan without paying the interest by January 30 each year. A single missed payment voids the plan and triggers attribution.
• Paying dividends to adult children through a family holding company without testing each excluded amount under TOSI.
• Contributing to a spousal RRSP and withdrawing within three years, which attributes the income back.

Related concepts

Income splitting lives inside the constraints of TOSI for dividends and s.67 reasonableness for salary, and it often uses management fees to move income between related entities. On the individual side, the RRSP and spousal RRSP are the two most commonly used statutory splitters, and the overall compensation mix is the subject of salary versus dividends.