Michigan Businesses Brace for Tariff Impact as U.S.-Canada Trade Tensions Escalate

DETROIT, MI — Michigan's auto industry leaders and small business owners are operating in what one former supply chain executive described as a "war room-like atmosphere" as the U.S.-Canada tariff battle intensifies, forcing companies to build contingency plans around rapidly shifting trade policy.

The latest escalation followed the collapse of high-stakes trade negotiations between Washington and Ottawa, prompting the White House to launch aggressive new tariffs of up to 50 percent on Canadian imports under Section 232 emergency trade authority. Imported Canadian softwood lumber and finished wooden furniture face taxes climbing to 50 percent, while raw materials such as Canadian maple, birch, and dimensional softwood have seen prices skyrocket.

Auto Industry in the Crosshairs

The federal government is maintaining a 25 percent baseline tariff on aluminum and steel imports from foreign sources. The administration has also signaled that truck and auto tariffs from Canada could surge to 50 percent by the start of next year, a move that would carry enormous weight for Michigan's manufacturing base, which remains heavily dependent on cross-border parts flows.

Parts routinely move back and forth across the border multiple times before a vehicle reaches a dealership, making Michigan's auto supply chain one of the most interconnected with Canada in the nation.

"It's not only your direct suppliers, but it's their suppliers and their suppliers and their suppliers, so they would be a real focus right now and probably a war room set up or a task force to understand the impact of these tariffs," said Jan Griffiths, a former auto supply chain executive. "What if the 50 percent comes in January, we hear the threat about another 50 percent coming in January, what if that happens, what does that look like?"

Small Businesses Feel the Pinch

The tariffs are already landing on smaller Michigan businesses that rely on Canadian imports.

Michael Howard, who has owned Howard Family Designs in Warren for about ten years, runs his operation out of his home and depends heavily on Canadian lumber. The cost spikes have forced painful decisions.

"We've had to unfortunately let one of our guys go," Howard said. "We helped him find a stable job so he's doing well, but he's no longer in our shop, and he was with us for many, many years."

Howard said his company has also lost clients because of increased costs. A planned medical facility build-out for late August or early September was expected to net the company $3,000 on a single project alone, but rising material costs have made it untenable.

"This is directly negatively impacting our ability to provide for our family and our business, and it really focuses us on giving back to our community and helping those in need," Howard said. "This impacts our ability to even do that."

Cost Pass-Through Decisions Loom

Many Michigan business leaders are now grappling with how much of the increased import costs they can absorb internally and how much they must pass along to customers. For auto executives, the calculus extends across thousands of suppliers and sub-suppliers across the state.

State economic development officials are watching the situation closely as the trade dispute unfolds, though no new state-level tariff relief or mitigation fund has been announced in the current legislative session. The question of whether Michigan's state budget should allocate dedicated resources to help businesses navigate the tariff exposure remains an open issue as the General Assembly prepares for its next session.

The trade dispute shows no signs of de-escalation in the near term, and Michigan businesses are being asked to plan for multiple scenarios in what is shaping up to be one of the most consequential trade environments in the state's manufacturing history.