UPDATED 3.16PM President Donald Trump will ask Chancellor Angela Merkel for advice on how to deal with Russian President Vladimir Putin, US officials say.

The US and German leaders meet next week after sometimes pointed disagreements in recent months.

Merkel will visit the White House on Tuesday for talks with Trump and a joint news conference in what will be their first face-to-face meeting since the new US president took power on January 20.

They are expected to discuss Germany's level of defence spending for the NATO alliance, the Ukraine conflict, Syrian refugees, the European Union and a host of other issues, said three senior Trump administration officials who briefed reporters.

During the 2016 US presidential campaign, Trump regularly criticised Merkel for her open-door refugee policy, contrasting it with what he promised would be tighter controls in the United States if he won office.

Merkel has been a leading critic of Trump's effort to ban travellers temporarily from seven Muslim-majority nations, a list that has since been pared back to six.

"My expectation is that they'll have a very positive, cordial meeting," said one of the officials, who spoke on condition of anonymity.

Trump has long expressed desire for warmer US relations with Russia but some of his top Cabinet officials are skeptical.

"The president will be very interested in hearing the chancellor's views on her experience interacting with Putin," said another official.

"He's going to be very interested in hearing her insights on what it's like to deal with the Russians."

Trump will also ask for Merkel's advice on what role the United States can most helpfully play in ongoing diplomatic efforts to resolve the conflict in eastern Ukraine, which has pitted Ukrainian forces against Russian-backed separatists.

The officials described Trump as impressed by Merkel's leadership, particularly in Germany's role alongside France in seeking peace in Ukraine, and on Afghanistan.

Trump has been critical of NATO allies who he says do not pay their fair share, and the officials said he would raise with Merkel the need for Germany to increase its defence spending as he tries to rally European allies to contribute more to NATO.

Germany should be "leading by example" on increasing contributions to NATO, one official said.

"We are heartened by the German government's determination to reach NATO's benchmark of committing 2 per cent of GDP to defence by 2024," the official said.