WASHINGTON — The Trump administration formally removed China’s designation as a currency manipulator on Monday, offering a major concession to the Chinese government as senior officials arrived in Washington to sign a trade agreement with President Trump.

The Treasury Department released its long-delayed currency report on Monday afternoon, providing its first public analysis of China’s currency practices since it designated China a manipulator in August at the direction of Mr. Trump. The report noted that China — which Mr. Trump had accused of weakening its currency, the renminbi, to make its goods cheaper to sell overseas — had made important commitments regarding the renminbi as part of the new trade agreement and that its value had appreciated since September.

“China has made enforceable commitments to refrain from competitive devaluation, while promoting transparency and accountability,” Treasury Secretary Steven Mnuchin said in a statement.

As part of the trade deal that Mr. Trump plans to sign at the White House on Wednesday, China and the United States have agreed to avoid devaluing their currencies to achieve a competitive advantage for their exports. The Office of the United States Trade Representative said last month that the agreement would include a currency chapter that detailed “high-standard commitments to refrain from competitive devaluations” and targeting of exchange rates. The trade pact is expected to include an enforcement mechanism, which the office said would ensure that China could not use its currency practices to compete unfairly against American exporters.