In Canadian personal tax planning, the Canada Revenue Agency enforces an aggressive legal barrier designed to prevent high-income earners from transferring investment wealth to lower-income family members: the statutory Attribution Rules under Sections 74.1 through 74.5 of the Income Tax Act. If a high-earning spouse simply gifts cash or transfers non-registered equities to a lower-earning spouse or adult child to invest, the tax code ignores the transfer: all subsequent interest, dividends, and capital gains are legally attributed back to the higher-earning spouse and taxed at their top marginal rate (up to 53.53% in Ontario and 54.8% in BC).

However, embedded within Subsection 74.5(2) of the Income Tax Act lies a statutory, CRA-approved exception that circumvents the attribution rules: the Prescribed Rate Loan Strategy. By establishing a formal, legally documented promissory note between spouses (or to a Family Trust for minor children) at the CRA’s official prescribed interest rate in effect at the time of the loan, attribution is permanently shut down. All investment returns generated above the prescribed interest rate are taxed in the hands of the lower-income spouse, creating substantial, recurring annual tax savings for affluent Canadian households. This forensic guide audits the mechanics of Section 74.5, calculates real-world family tax savings, and warns against the fatal January 30 interest payment deadline.

What Is a Prescribed Rate Loan and How Does It Bypass Attribution?

To execute a defensible prescribed rate loan that withstands CRA scrutiny, four mandatory legal and structural components must be established:

1. Written Promissory Note: A formal legal contract signed by both spouses establishing the principal loan amount, repayment on demand, and interest payable annually at the prevailing CRA prescribed rate under Section 4301 of the Income Tax Regulations.
2. Physical Cash Transfer: The lending spouse must transfer actual funds from their personal account to an independent, non-registered investment account opened exclusively in the borrowing spouse’s name. Transferring existing in-kind equities triggers deemed disposition capital gains.
3. Documented Annual Interest Payments: The borrowing spouse must physically transfer the calculated annual interest from their own personal account back to the lending spouse on or before January 30 each year.
4. Tax Return Reporting: The lending spouse reports the received loan interest as taxable income on Line 12100 of their T1 return. The borrowing spouse claims an equal, offsetting interest expense deduction on Line 22100 under Section 20(1)(c) because the funds were borrowed for the purpose of earning investment income.

Forensic Tax Savings Model: $500,000 Spousal Loan

Our quantitative model evaluates a high-earning spouse (taxed at Ontario’s top marginal rate of 53.53% on income over $246,752) executing a $500,000 prescribed rate loan to a lower-earning spouse with $35,000 in personal income (taxed at a 20.05% marginal rate). The loan is established at a 4.0% prescribed rate, and the $500,000 portfolio generates an annual 7.0% total return (3.0% eligible Canadian dividends and 4.0% unrealized/realized capital gains):

Over a 10-year period, this single structural maneuver conserves over $90,000 in cold hard cash for the family unit. When the borrowed funds are invested in tax-advantaged Canadian dividend-paying equities or corporate class funds that prioritize capital gains over interest, the family’s effective tax rate drops even further.

The Fatal January 30 Statutory Deadline

The single greatest operational vulnerability of the prescribed rate loan strategy is compliance discipline. Under Subsection 74.5(2)(b) of the Income Tax Act, the borrowing spouse must pay the interest for each calendar year no later than 30 days after the end of the year (January 30).

The CRA grants zero grace period. If January 30 falls on a Sunday and payment clears on Monday, February 1, or if an automated bank transfer fails, the loan is permanently invalidated. The attribution rules immediately re-engage not only for that year, but for all future years as long as the loan remains outstanding. To bulletproof the strategy, financial advisors mandate that interest transfers be scheduled and verified between January 5 and January 15, creating an undeniable paper trail of bank statements and cancelled cheques.

People Also Ask

Can a prescribed rate loan be used to fund investments for minor children?
Yes. Because minor children cannot legally enter into contracts, the high-earning individual lends money at the prescribed rate to a Family Trust. The trust invests the capital, pays the annual loan interest back to the lender, and allocates remaining investment income (such as capital gains or secondary dividends) to minor children to pay for private school tuition or summer camps tax-free under the child’s basic personal amount.

What happens if the borrowing spouse sells the investments at a loss?
The borrowing spouse is still legally obligated to pay the annual prescribed interest on the full original principal loan amount to the lending spouse by January 30, regardless of portfolio performance. If investment values decline significantly, the couple may choose to repay the loan principal to eliminate the ongoing interest liability.

How is the CRA prescribed interest rate determined?
The CRA calculates the prescribed interest rate quarterly based on the average yield of three-month Government of Canada Treasury Bills sold during the first month of the preceding quarter, rounded up to the nearest whole percentage point.