The Canada Revenue Agency held its prescribed interest rate at 3% for the fourth quarter of 2026, the sixth consecutive quarter without a change. For clients using prescribed rate loans to split investment income with a spouse or a family trust, or corporate accounts using shareholder loans anchored to the same benchmark, that stability is the headline. What comes next is not.
The prescribed rate is set quarterly from the yield on Government of Canada Treasury bills, with a lag built into the calculation. The five-year Government of Canada bond yield, a related but distinct instrument that drives longer fixed borrowing costs, closed at 3.43% on September 8, up from 3.22% two weeks earlier. The move started before the Federal Reserve decision investors are pricing today as a near-certainty, a 92.7% market-implied probability of a hike per CME FedWatch, has pushed North American yields higher across the curve since.
The Account-Level Planning Bridge
Prescribed rate loans work by lending money at the CRA rate to a lower-income spouse, partner, or a family trust for the benefit of adult children, with the borrower investing the funds and paying tax on the resulting income in their lower bracket. The lower the locked-in rate, the wider the gap between what the loan costs and what the investment can reasonably earn. A rate reset from 3% to something higher in the first quarter of 2027 does not cancel existing loans structured at 3%, but it raises the cost of setting up a new one after the reset takes effect.
The same logic applies to shareholder loans inside Canadian-controlled private corporations, where the prescribed rate sets the benchmark for interest-free or below-market loan rules under the Income Tax Act. Trust structures that rely on a family loan at the prescribed rate face the identical timing question: the rate available now is not guaranteed to be the rate available in ninety days.
Why the Window Is Now, Not Hypothetical
The five-year Government of Canada yield has climbed through late August and early September as markets priced in a near-certain Fed hike, and it sits well above the 3% prescribed rate floor heading into that decision.
The five-year Government of Canada yield has risen roughly 15 basis points since late August as markets priced in a near-certain Fed hike, holding well above the 3% level the CRA prescribed rate has occupied for six straight quarters. Source: Investing.com daily close data.
A rising five-year yield does not mechanically set the prescribed rate for the next quarter, which the CRA calculates from short-term Treasury bill yields rather than the five-year benchmark. But the two have moved together through every tightening cycle in the current dataset, and a Fed hike that lifts the whole North American yield curve is the kind of event that shows up in both.
What This Means Beyond the Loan Itself
The same rate environment is showing up in a less discretionary corner of the balance sheet. The Canada Mortgage and Housing Corporation reported residential mortgage debt above $2.4 trillion at the end of 2025, up 4.8% year over year, with the 90-plus day delinquency rate rising to 0.24% nationally as fixed terms from the early 2020s reach renewal into higher rates. A client weighing whether to set up a new prescribed rate loan this quarter is very often the same client renewing a mortgage into a materially different rate than the one they signed five years ago, and the two conversations belong in the same meeting.