Following the federal government’s aggressive expansion of the Tax on Split Income (TOSI) rules, traditional corporate dividend sprinkling to spouses and adult children was effectively dismantled. In response, Canadian high-net-worth families and private wealth practitioners have increasingly turned to one of the few statutory safe harbors explicitly preserved under Section 74.5(2) of the Income Tax Act: the Prescribed Rate Loan.

Forensic Strategy & Statutory Findings: Under Section 74.5 of the Income Tax Act, loans between family members are legally exempt from CRA spousal attribution rules if documented with a formal promissory note and charged at the CRA prescribed interest rate in effect when the loan was issued. All investment earnings generated above the prescribed rate are taxed exclusively in the hands of the lower-income spouse or family trust, permanently shifting investment income from top 53% marginal brackets down to zero or low-bracket rates.

How Do Prescribed Rate Loans Work in Canada?

In Canada, a prescribed rate loan allows a high-income individual to loan investment capital to a lower-income spouse or family trust at the CRA’s statutory prescribed rate. As long as annual interest is paid by January 30 of the following year, all excess investment returns are legally taxed at the borrower’s lower tax rate without triggering attribution rules.

This planning mechanism bypasses the punitive restrictions analyzed in our foundational guide to TOSI rules and corporate distribution defenses. By deploying personal capital rather than private corporate dividends, families can fund private school tuition, post-secondary education, and family living expenses using after-tax dollars taxed at the lowest marginal tiers.

Tax Arbitrage Mechanics: High-Earner vs. Prescribed Rate Loan Structure

Portfolio Metric Status Quo (High Earner Holds $1M) Prescribed Rate Loan to Spouse Net Annual Family Wealth Alpha
Loan / Portfolio Capital $1,000,000 personal investments $1,000,000 demand promissory note Capital principal preserved
Gross Investment Yield (7%) $70,000 dividend / interest income $70,000 earned by lower-income spouse Yield generated in low-tax hands
Prescribed Interest Payment $0.00 $40,000 paid to lender (at 4% rate) Lender reports $40k income, borrower deducts $40k
Net Taxable Shift to Spouse $0.00 $30,000 net income shifted Taxed at spouse’s ~20% bracket vs 53.53%
Annual Family Tax Savings $0.00 (All taxed at 53.53%) $10,050 net annual tax savings +$100,500 compounded over 10 years

The Fatal January 30 Deadline: The Zero-Tolerance Trap

While the tax savings of a prescribed rate loan are substantial, the CRA enforces an unyielding statutory condition under Section 74.5(2)(b): **interest on the loan must be paid annually on or before January 30 of the immediately following calendar year**.

There is zero statutory grace period, no relief for administrative oversight, and no waiver for bank holidays. If the borrower pays the required interest on **January 31**, the prescribed rate safe harbor is permanently destroyed for the entire lifetime of that loan. All past, present, and future income from that portfolio will retroactively attribute back to the lending spouse at their top marginal rate.

Alistair Vance’s Verdict: The prescribed rate loan remains one of the cleanest legal income-splitting structures in the Canadian tax landscape. The golden rule is mechanical: automate the annual interest payment for January 10th each year via certified electronic funds transfer with clear memo trails. Never wait until the final week of January. For families holding significant non-registered wealth, locking in a low prescribed rate creates decades of tax-deferred family compounding.

People Also Ask

What is the current CRA prescribed interest rate for loans?
The CRA calculates the prescribed rate quarterly based on the average yield of 90-day Government of Canada Treasury bills. Once a prescribed rate loan agreement is executed, the rate is locked in for the entire life of the loan regardless of whether market rates rise in the future.

Can I use a prescribed rate loan to pay for my children’s private school?
Yes, when structured through a properly drafted family trust. The lending parent loans capital to the trust, which invests the funds. Income generated above the prescribed rate is distributed to low-income minor beneficiaries to pay third-party expenses like private school tuition or summer camp, utilizing their personal basic tax credits.

Does a prescribed rate loan trigger TOSI in Canada?
No. Income derived from investments held outside a private corporate structure (such as public equities, index ETFs, and bonds funded by a genuine personal loan) is explicitly excluded from the TOSI punitive tax regime.

Related Canadian Corporate Wealth & Income Splitting Guide:

To optimize how corporate dividends and investment returns are distributed across family members, read our guide on Eligible vs. Non-Eligible Dividends: Canada Tax Guide.