The officials stressed the importance of "a strong South Korea-U.S. alliance and the need for a stable stationing of U.S. troops" and said the response from most of South Korea's government to the revised arrangement has been "positive so far".
South Korea has shared the financial burden for US troops since the early 1990s.
South Korea and the United States struck a new deal Sunday that increases Seoul's contribution for the cost of the American military presence on its soil, overcoming previous failed negotiations that caused worries about their decades-long alliance.
U.S. Special Representative for the DPRK Stephen Biegun (L) shakes hands with the ROK's Foreign Minister Kang Kyung-wha in Seoul, ROK, February 9, 2019. Situated at the epicenter of one of the world's most geopolitically volatile regions, the Korean Peninsula is of particular strategic importance to US policy and posture across East Asia.More news: Subaru Legacy Debuts With Fresh Look, Big Screen
The U.S. State Department senior adviser for security negotiations and agreements, Timothy Betts, met Kang before signing the agreement on behalf of the United States, and told her the money represented a small but important part of South Korea's support for the alliance.
But Trump told United States broadcaster CBS last week that he had "no plans" to remove U.S. troops from South Korea as part of a deal at the upcoming summit, although he admitted "maybe someday" he would withdraw them, adding: "It's very expensive to keep troops there".
The provisional contract, known as the Special Measures Agreement, was inked almost six weeks after the previous five-year accord expired. "We are very pleased that our consultations resulted in an agreement, and I think that will deepen our cooperation in the alliance".
Seoul and Washington have held 10 rounds of talks since March, amid Trump's calls for South Korea to pay more.
South Korea has hosted American troops since the two countries fought together against the communist-backed North in the 1950-53 Korean War, which ended in an armistice instead of a peace treaty.More news: Miley Cyrus and parents at MusiCares Person of the Year 2019
Trump told CBS' "Face the Nation" last Sunday that he has no plans to withdraw troops from South Korea. During his election campaign, Trump suggested he could pull back troops from South Korea and Japan unless they took on greater a share of the financial burdens of supporting USA soldiers deployed there.
Negotiators held 10 rounds of talks a year ago but remained deadlocked over President Donald Trump's demand that the South pay significantly more. -North Korea summit due to take place at the end of the month in Hanoi, Vietnam.
The new arrangement, pending ratification by the South Korean parliament in April, would increase Seoul's share of the cost by a little over 8 percent to $924 million in USA dollars.
Their first summit in Singapore last June resulted in Kim's vague commitment to "complete denuclearisation of the Korean peninsula", a term that his propaganda machine previously used when it argued it would only denuclearise after the USA withdraws its troops from South Korea. -North Korea summit, Seoul officials said.
The US military arrived in South Korea to disarm Japan, which colonised the Korean peninsula from 1910-45, following its second world war defeat.More news: How to Watch the 2019 Grammys Online
Late a year ago, the United States military warned Korean workers on its bases they might be put on leave from mid-April if no deal was agreed.