Why did Canadian consumers pay only 6 percent more for tariffed goods instead of the full 25 percent tariff rate?

According to the Harvard research, several factors limited pass-through: tariffs were expected to be temporary (lifted after six months), retailers had inventory buffers to absorb costs, competitive domestic alternatives kept pressure on pricing, and retailers varied in their willingness to explicitly pass along costs. About one quarter of the tariff was passed through in both Canada and the US, but Canada's narrower tariff scope and lower consumer salience meant spillover effects were limited.

How much did Canadian tariffs actually affect overall inflation and consumer prices?

The tariffs raised the Canadian Consumer Price Index by just 0.3 percentage points, less than half the 0.7 percentage point increase seen in the US from its tariff experience. This modest aggregate impact reflects both the limited pass-through on individual products and the fact that tariffs covered fewer product categories and did not substantially affect substitute goods or non-tariffed items.

What role did retailer behavior play in determining tariff price impacts?

Retailers' strategic decisions were critical determinants of consumer price impact. Factors included: reliance on US imports versus domestic suppliers, inventory levels to cushion tariff shocks, pricing strategy expectations about tariff duration, and decisions about whether to visibly label tariffed products. Some retailers used tariff labels to explain price increases and soften customer backlash, while others absorbed more costs to maintain price competitiveness.

Will broader or longer-lasting tariffs have larger price impacts than these temporary Canadian tariffs?

Yes, according to the researchers. They note that broader, more persistent, or more visible tariff regimes may generate larger and faster pass-through to consumer prices. Conversely, when tariffs are expected to be short-lived, when retailers have margin flexibility, and when tariff exposure is not salient to consumers, price effects remain muted. Future tariffs with different characteristics could behave very differently.

How will Harvard researchers track the latest 2026 US-Canada tariffs going forward?

Researchers plan to extend analysis through Tariff Tracker II, a real-time project from Harvard Business School's newly launched Innovations in Economic Measurement Lab. This tracker combines artificial intelligence and large-scale pricing data from PriceStats to develop economic measures that update as conditions change, allowing supply chain professionals to monitor tariff propagation through prices and supply chains in real time.

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How Canadian Tariffs Hit Consumer Prices: Only 6% vs 25% Levy

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The signal

Harvard Business School research analyzing Canadian retaliatory tariffs imposed in March 2025 and lifted six months later found that price increases were significantly muted compared to the actual tariff rates. Tariffed products saw prices rise just 6 percent relative to unaffected goods, roughly one quarter of the 25 percent levy itself.

This contrasts with US experience where tariff pass-through was higher, suggesting that retailer behavior, tariff visibility, inventory management, and market expectations about duration all influence how much tariff costs actually reach consumers. The research team discovered that retailers' strategic decisions, including whether to label products as tariff-affected and how much margin flexibility they possessed, determined cost absorption rather than simply passing through the full tariff value.

Supply chain professionals should recognize that tariff impacts are not uniform across markets and depend heavily on retailer sophistication and competitive dynamics.

Frequently Asked Questions

What This Means for Your Supply Chain

Simulation Suggestion

strategic

What if broader tariffs cover more product categories and remain in effect for 12+ months?

Model a scenario where tariff coverage expands from narrow product scope to 40+ percent of import categories and duration extends from 6 months to 12+ months. Assume retailers have limited ability to absorb margin pressure and visibility of tariffs is high (consumers actively aware). Calculate pricing impact, margin compression by retailer segment, and consumer price index effects.

Run this scenario

Simulation Suggestion

this week

What if competitor retailers adopt visibly labeled tariff pricing while others absorb costs?

Model competitive divergence where some retailers explicitly label tariff-affected products and increase prices 5-6 percent while others absorb tariffs and maintain prices. Simulate customer switching patterns, margin impact by retailer, and market share shifts. Assume price elasticity of 1.2 for visibly tariffed products versus 0.6 for unlabeled pricing.

Run this scenario

Simulation Suggestion

this month

What if retailers reduce inventory buffers in response to tariff uncertainty?

Simulate a scenario where Canadian retailers operating on just-in-time inventory reduce safety stock by 30 percent due to tariff volatility. Model the impact on supply chain costs, stockout risk, and ability to absorb tariff costs. Assume supplier lead times from the US remain 2-3 weeks. Calculate effects on pricing flexibility and service levels.

Run this scenario

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