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Sept 15 Tariff Shift: What's Actually Changing on Canadian Goods (And What Isn't)

  Published September 12, 2026 At 12:01 a.m. ET on Tuesday, September 15, a new round of U.S. tariff changes takes effect on Canadian goods. If you've seen headlines calling this a "new 50% tariff on Canadian steel, aluminum and paper," here's the more accurate story: it isn't a new tariff at all. It's the U.S. reshuffling which products fall under a 50% tariff that's already been in place since August 22 — adding some categories, removing others, on the same day. Here's what's actually happening, and why it matters more to Canadian manufacturers and cross-border shoppers than to your everyday grocery bill. The tariff this modifies Back on August 22, 2026, the U.S. imposed a 50% tariff under Section 338 of the Tariff Act of 1930 on roughly $20 billion CAD of Canadian goods. The White House framed it as retaliation for Canadian "discrimination" against U.S. alcoholic beverages, dairy, and motor vehicles — three separate proclamations, eac...

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Tariff Deadline Day: TSX Slips to 2-Week Low as Wall Street Slides and Oil Tops $93

 

August 21, 2026

Today's the day: the three-day pause on Washington's 50% tariff threat on a slate of Canadian goods runs out at the end of the trading session, and as of last night nothing was signed. Add in a bond-yield-driven selloff on Wall Street, oil pushing above $93 on Middle East tensions, and gold holding near record highs, and Canadian investors have a lot to watch before the weekend.

Today's snapshot:
  • 50% Canada-U.S. tariff pause expires end of day today — no deal signed as of last night
  • TSX closed Thursday at a two-week low as banks fell and gold miners gained
  • Wall Street's worst day in over a week; Dow lost more than 700 points
  • Oil near two-month highs, gold above $4,500/oz, loonie strengthening

🇨🇦 TSX: Two-Week Low as Financials Slide

Canada's main index edged down to its lowest closing level since Aug. 6 on Thursday, as steep losses for the Big Five banks offset gains for resource and gold-mining shares. The pullback came even as oil prices rose, with investors globally questioning whether the U.S. Treasury's efforts to calm a bond-market selloff would be enough.

IndexCloseChange
S&P/TSX Composite36,365.42-36.37 (-0.10%)
S&P/TSX Capped Financials736.23-11.87 (-1.59%)
S&P/TSX Capped Energy449.61+6.07 (+1.37%)

The Big Five weighed heaviest: RBC, TD, BMO, CIBC and Scotiabank all posted losses through the week as Treasury yields kept climbing. On the flip side, gold miners kept shining — Agnico Eagle, Wheaton Precious Metals and Barrick have all posted double-digit percentage gains over the past week as bullion holds near record territory. "There's a bit of a panic in the market," Greg Taylor, chief investment officer at PenderFund Capital Management, told Reuters, pointing to unease over the U.S. government's unorthodox efforts to prop up long-dated bonds.

🇺🇸 Wall Street: Worst Day in Over a Week

U.S. stocks fell sharply Thursday as Treasury yields resumed their climb despite Wednesday's debt-buyback announcement, and a brutal session for Walmart — down as much as 9%, its worst day in more than four years — dragged the broader market lower after the retail giant's second-quarter comparable sales and forward guidance both missed expectations.

IndexCloseChange
Dow Jones Industrial Average52,759.21-703.84 (-1.32%)
S&P 5007,641.16-0.87%
Nasdaq Composite26,067.17-1.00%

The 30-year Treasury yield pushed back toward 5.25% — near its highest level in about two decades — as bond markets showed only limited faith that the Treasury's expanded buyback plan can contain borrowing costs. AI-related names were mixed after OpenAI posted results that failed to match the pace of rival Anthropic's growth. This morning, futures are pointing to a bounce: Dow futures were up roughly 199 points (+0.4%), with S&P 500 and Nasdaq-100 futures both higher, helped along by Treasury Secretary Scott Bessent's comments touting "toughest sanctions" plans aimed at Iran.

🌍 Europe & Asia: Mixed Session as Yields Stay in Focus

European shares closed largely flat to slightly lower Thursday, with London's FTSE 100 essentially unchanged as gains in mining and oil stocks offset broader weakness; the Euro Stoxx 50 and DAX posted modest gains. In Asia overnight, shares were mostly higher despite Wall Street's retreat, though most regional benchmarks remain on track for a weekly loss as elevated bond yields and oil prices stoke inflation worries.

IndexLevelChange
FTSE 100 (London)10,767.80+0.18%
DAX (Frankfurt)26,071.63+0.34%
CAC 40 (Paris)8,461.05+0.09%
Nikkei 225 (Tokyo)66,016.36-0.30%
Hang Seng (Hong Kong)25,967.58+1.10%
Kospi (Seoul)6,912.95+0.90%
ASX 200 (Sydney)9,058.90-0.30%

🛢️ Commodities & the Loonie

Oil climbed for a third straight session, with Brent nearing $94 and WTI approaching $87, as the U.S.-Iran ceasefire remains stalled and tensions in the Strait of Hormuz continue to simmer. Gold is holding above $4,500 an ounce and is on track for a third consecutive weekly gain, as investors keep piling into safe havens amid bond-market volatility. The loonie firmed against the greenback this morning.

Commodity / CurrencyLevelChange
Brent CrudeUS$93.78/bbl+2.1%
WTI CrudeUS$86.83/bbl+2.9%
GoldUS$4,500+/oz3rd straight weekly gain
USD/CAD1.3764-0.19% (loonie up)
Loonie (in U.S. cents)≈72.7¢ US

🚨 The Big One: Tariff Deadline Lands Today

This is the story Canadian markets are really watching. President Trump paused a threatened 50% tariff on roughly US$20 billion of Canadian goods — including dairy, alcohol, furniture, cement and building materials — just hours before it was set to hit on Aug. 19, saying the two countries had reached a "DEAL" pending finalization of the paperwork. Prime Minister Mark Carney was more measured, calling it "substantial progress" with "important work still to be done."

That pause runs out at the end of today, Aug. 21. If the documents aren't finalized, the fallback deadline is 12:01 a.m. ET Saturday. As of last night, Canada-U.S. Trade Minister Dominic LeBlanc's office was still declining to confirm a signed agreement. Reported terms on the table include steel and aluminum tariffs coming down to 25% from 50%, autos to 15% from 25%, and expanded U.S. access to Canada's dairy market — in exchange for Canada dropping most of its retaliatory tariffs, which it has already done for a wide range of U.S. goods, while holding firm on steel, aluminum and autos.

💰 What It Means for You

If you hold bank stocks or a Canadian bank-heavy ETF (like XIC or ZEB), today's session bears watching — financials have been the biggest drag on the TSX all week as yields climb, even as the index itself holds up thanks to gold miners.

If you're shopping cross-border or buying imported goods, today's outcome matters directly. A finalized deal with lower tariffs on steel, aluminum and autos would ease some cost pressure on vehicles and construction materials; no deal means the 50% tariff threat on dairy, alcohol and furniture could resurface as soon as this weekend.

If you're filling up the tank, oil's climb toward $87-94 a barrel on Middle East tensions is starting to show up at the pumps — worth watching alongside the gas tax holiday's Sept. 7 expiry we've been tracking.

📅 What to Watch

  • Today: The 50% tariff pause expires end of day — watch for a signed agreement or a slide to the Saturday 12:01 a.m. ET fallback deadline.
  • Today: Japan's core CPI data, closely watched for Bank of Japan rate-hike signals.
  • This weekend: Any tariff deal details will need to be digested before Monday's open.
  • Sept. 2: Bank of Canada rate decision — a seventh straight hold at 2.25% is widely expected, though July's hotter-than-forecast 3.0% CPI print adds a wrinkle.
  • Sept. 7: Canada's federal gas tax holiday is set to expire.

Market data reflects Thursday, Aug. 20, 2026 closing prices and Friday morning premarket/overnight levels as of publication, sourced from TMX/TSX, Reuters, CNBC and Trading Economics. This article is for informational purposes only and is not investment advice.

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