He added, referring to the day he takes office: “January 20, 2025, will be the birth date of the External Revenue Service.”
The name is a play on the Internal Revenue Service, a bureau under the Treasury Department that administers and enforces US tax laws.
While the president-elect has said countries like China would foot the bill on tariffs, tariffs are a tax on imported goods and importers in the United States pay the duties.
The economic burden of such levies may also end up being shared with exporters and consumers.
In his online post, Trump did not provide further details on how the new department would be formed.
Trump on Tuesday also criticised the United States’ past efforts to pursue trade agreements, saying these accords were “soft and pathetically weak.”
While Washington had for decades used free-trade pacts to forge relationships around the world, it has more recently shifted away from this stance, including under outgoing President Joe Biden.
© Agence France-Presse