The move is a first for a sitting president, and will delete the Treasurer of the United States' signature from money for the first time in 165 years.
The Treasury said in a statement to Reuters on Thursday that the first $100 bills with Trump's signature and that of Treasury Secretary Scott Bessent will be printed in June, followed by other bills in subsequent months.
The Treasury's Bureau of Engraving and Printing is currently still producing notes bearing the signatures of former president Joe Biden's Treasury secretary, Janet Yellen, and Treasurer Lynn Malerba.
Malerba will be the last of an unbroken line of Treasurers whose signatures had appeared on US federal currency since 1861, when it was first issued by the government.
The signature change is the latest effort by the Trump administration and its allies to put the president's name on buildings, institutions, government programs, battleships and coins.
The design of a commemorative gold coin with Trump's image was approved by a federal arts panel whose members he appointed.
Bessent said in a statement that the move was appropriate for the US 250th anniversary, given strong US economic growth, financial stability and "lasting dollar dominance" during Trump's second term.
"There is no more powerful way to recognise the historic achievements of our great country and President Donald J. Trump than US dollar bills bearing his name, and it is only appropriate that this historic currency be issued at the Semiquincentennial," Bessent said.
An effort for a circulating $1 Trump coin was set back by laws prohibiting the depiction of living individuals on US coins.
A statute governing the printing of Federal Reserve notes gives the Treasury broad discretion to change designs to guard against counterfeiting. The law requires keeping certain elements, including the words "In God We Trust", and only allows portraits of deceased individuals.
The overall designs of bills will not change, except for Trump's signature replacing the Treasurer's, Treasury officials said.
US Treasurer Brandon Beach said in a statement that printing Trump's signature on the American currency "is not only appropriate, but also well deserved".
The bureau of engraving is responsible for producing all paper currency while the US Mint produces all the coins.
with AP
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