Brace Yourself: U.S. Tariffs Are Spiking to 15% This Week
Treasury Secretary Scott Bessent confirms the global tariff rate will rise from 10% to 15% within days, while predicting a full reversion to pre-Supreme Court levels within five months.
The Tariff Timeline, Explained
The United States is set to implement a 15% global tariff rate this week, Treasury Secretary Scott Bessent confirmed in an interview on CNBC's Squawk Box on Wednesday, March 4. The increase brings the rate up from its current 10% level — and marks the latest development in a fast-moving series of trade policy shifts that have kept importers, retailers, and e-commerce sellers in a prolonged state of uncertainty.
The announcement closes a gap that had drawn significant attention. When President Donald Trump declared the new tariff would take effect “immediately” at 15%, the actual implemented rate came in at 10%. Bessent acknowledged the discrepancy directly, confirming the higher rate would arrive “sometime this week.”
How We Got Here
The current tariff situation is the product of a significant legal reversal. Trump originally imposed a broad array of import duties on most of the world's countries by invoking the International Emergency Economic Powers Act (IEEPA) — without authorization from Congress. On February 20, the Supreme Court ruled 6-3 that Trump did not have the legal authority to use IEEPA in that manner, striking down the steeper reciprocal duties that had been in place.
Hours after the ruling, Trump signed an executive order imposing a replacement 10% global tariff under a different legal authority — Section 122 of the Trade Act of 1974. A day later, he announced that rate would rise to 15%.
The Section 122 authority carries an important constraint: the tariffs imposed under it can remain in place for only 150 days unless Congress approves an extension.
What Comes Next
Bessent offered a forward-looking prediction that will matter considerably to businesses planning their import strategies. Within that 150-day window, the Office of the U.S. Trade Representative and the Commerce Department are expected to complete trade-related studies that would allow the administration to impose tariffs under separate, more durable legal authorities.
“It's my strong belief that the tariff rates will be back to their old rate within five months,” Bessent said, referring to the steeper reciprocal duties that were struck down by the Supreme Court. He characterized those alternative legal authorities as more robust, noting they have withstood more than 4,000 legal challenges, while acknowledging they operate more slowly than IEEPA.
In practical terms, Bessent is signaling that the current 15% rate is a placeholder — a bridge designed to maintain tariff pressure while the administration builds the legal infrastructure to reimpose something closer to the original regime.
What This Means for E-Commerce and Retail
For importers, online sellers, and retailers sourcing goods internationally, the near-term picture involves the following key dates and thresholds to watch:
- This week: Global tariff rate rises from 10% to 15%
- 150-day window: Section 122 authority expires unless Congress acts, likely around late July or early August
- By August: Bessent projects a reversion to pre-Supreme Court tariff levels under alternative legal authorities
The uncertainty is particularly acute for e-commerce businesses that rely on overseas manufacturing — especially those sourcing from China, where tariff exposure has been highest. While the current 15% rate represents a step down from the reciprocal duties that were in place before the Supreme Court ruling, Bessent's comments suggest that reprieve may be short-lived.
Sellers and importers would be well-advised to monitor the USTR and Commerce Department studies underway during the 150-day window, as their conclusions will likely shape the legal basis and scope of whatever tariff structure follows.
