For years, President Donald Trump has complained that countries hosting American troops aren’t paying enough. Now he wants to get even, and then some.

Under White House direction, the administration is drawing up demands that Germany, Japan and eventually any other country hosting U.S. troops pay the full price of American soldiers deployed on their soil -- plus 50 percent or more for the privilege of hosting them, according to a dozen administration officials and people briefed on the matter.

In some cases, nations hosting American forces could be asked to pay five to six times as much as they do now under the “Cost Plus 50” formula.

Germany now pays about 28 percent of the costs of U.S. forces based there, or $1 billion a year, according to David Ochmanek, a researcher at the Rand Corp. Under “Cost Plus 50,” its payments would skyrocket, as would those of Japan and South Korea.

Officials at the State Department and Defense Department declined to comment. Officials with Japan and Qatar said they hadn’t been approached. A German embassy spokesman said there was no discussion underway.