On the Radar: Could a trade war actually pull Canadian mortgage rates lower?

Economic insights
Aug 27, 2026

First National Financial LP

Quick Takes:

Trade talks between Canada and the U.S. collapsed on Friday, August 21, and 50% U.S. tariffs on $27.6 billion of Canadian exports took effect the next morning.
Canada answered on Tuesday with counter tariffs on $27.6 billion of U.S. imports, effective September 8, matching Washington dollar for dollar.
Bond markets read the escalation as a growth shock, pulling the GoC 10-year yield down from its 3.76% peak and leaving a 99% chance of a Bank of Canada hold on September 2.
U.S. markets moved the other way, with FedWatch odds of a September Fed hike climbing to 42% from 33% a week earlier.

The trade file went from tense to broken in the space of a weekend. Talks between Ottawa and Washington collapsed on Friday, August 21, and new U.S. tariffs took force before dawn on Saturday. By Tuesday, Canada had answered in kind.

For mortgage watchers, the surprise was the direction bond yields moved. Tariffs raise prices, so the reflex is to expect higher rates, but Canadian yields fell as markets weighed the damage to growth. This article traces what happened, how markets repriced, and what it means ahead of the Bank of Canada decision on September 2.

The Weekend the Talks Collapsed

The talks came apart on Friday after the two sides deadlocked on a final package. Prime Minister Mark Carney said the United States asked too much and offered too little, while the U.S. Trade Representative countered that Canada walked away from a deal that would have cut tariffs on steel, autos, and lumber. Each side blamed the other, and neither set a date to resume.

At 12:01 am on Saturday, August 22, the new U.S. tariffs took effect under Section 338 of the Tariff Act of 1930, a dormant law never before used this way. The measures add a 50 percent duty on Canadian dairy, alcohol, motor vehicles, and a long list of consumer goods, and CUSMA compliance offers no exemption. However, energy, potash, fish, and critical minerals were carved out.

Prime Minister Carney addressed the country on Saturday and described Canada as under economic attack, calling the new tariffs a miscalculation. He also ruled out concessions and promised a response matched dollar for dollar. Washington, meanwhile, kept escalating.

Tariffs in Both Directions

President Donald Trump raised the stakes again on Monday, posting that tariffs on all Canadian cars, trucks, auto parts, and steel would climb to 50 percent on January 1, 2027. He cast the increase as the price of Canada refusing to fall in line. Even before that date, the tariffs now in force cover roughly five percent of Canadian exports to the United States.

Then on Tuesday, August 25, Ottawa announced counter tariffs on $27.6 billion of U.S. imports, matching the value Washington targeted dollar for dollar. The measures take effect September 8 and apply rates of 15, 25, and 50 percent, with the heaviest duties on U.S. steel, aluminum, furniture, and clothing. Ottawa paired them with a $7.5 billion support package for affected workers and businesses.

Both governments also kept their earlier measures in place, so the Section 232 metal duties and Canada’s auto surtaxes still apply. The new tariffs stack on top of those existing charges rather than replacing them.

Why Bond Yields Fell When Tariffs Rose

Tariffs usually read as inflation, but bond markets treated this round as a recession risk first. The GoC 10-year yield touched 3.76 percent on Friday, August 21, then slid to about 3.65 percent by midweek as investors bought safety. Meanwhile the five-year yield, the benchmark behind fixed mortgage pricing, eased from about 3.36 percent to roughly 3.24 percent.

The logic runs through growth. When a 50 percent wall goes up in front of your largest export market, investment plans stall and hiring slows. Bond investors responded by pricing slower growth ahead, which pulled yields down despite the inflation threat.

Meanwhile, the loonie told the other half of the story, closing Monday at 72.24 U.S. cents after the latest tariff threat. A weaker dollar raises the cost of imported goods, which feeds the next CPI reading. So the currency channel keeps inflation risk alive even while the bond market bets on a slowdown.

None of it changed the September math. Futures markets put the odds of a hold at 99 percent as of Wednesday, with the thin remainder pointing to a hike rather than a cut. Strong July hiring of 75,000 jobs and inflation sitting at 3 percent leave the Bank little room to ease even as trade risk builds.

What This Means for Canadian Mortgage Rates

Variable-rate holders should expect nothing to change next week. Because the overnight rate drives prime, a hold at 2.25 percent on September 2 keeps every variable mortgage exactly where it is. Markets have left little room for surprise.

Fixed rates are the live story. Lenders price fixed mortgages off GoC yields, so the drop in the five-year benchmark since August 21 is the raw material for cheaper fixed pricing if it holds. However, lenders pass falling yields through slowly, and one volatile week rarely moves posted rates on its own.

South of the border, the pressure runs the other way. FedWatch odds of a September hike climbed to 42 percent by Wednesday from 33 percent a week earlier, because tariffs feed U.S. inflation that was already sticky. Since U.S. Treasury yields set the floor under GoC yields, a hawkish Fed limits how far Canadian fixed rates can fall.

What Could Change the Picture

The Bank of Canada decision on Wednesday, September 2 comes first. Since a hold is overwhelmingly priced in, the statement language will matter more than the rate itself. Any hint about how the Bank weighs tariff inflation against tariff damage could move yields quickly.

Canada’s counter tariffs then take effect on Monday, September 8, pushing import taxes into the fall inflation data. The August jobs report lands September 4 and the next CPI reading arrives September 14, so evidence will pile up fast. If tariff costs show up in those numbers, the case for lower fixed rates weakens.

Any surprise return to the negotiating table would flip the story in the other direction. Both sides traded escalations all week, yet neither has closed the door on talking, and one phone call could unwind part of the growth fear that pulled yields down. Rate relief built on bad news can vanish when the news improves.

Bottom Line

A trade war is a strange friend to mortgage borrowers, but that is the near-term picture. Growth fear has pulled the bond yields behind fixed rates lower, while the Bank of Canada sits firmly on hold.

The relief carries an expiry risk, because the same tariffs cutting yields now are loading up inflation pressure for later. If you are renewing this fall, softer yields are working in your favour for the moment, though the September 8 counter tariffs and a hawkish Fed could take that gift back.