Indonesian ministers assigned to evaluate feasibility studies of bids by Japan and China to build the nation's first high-speed rail line on Wednesday prepared to submit recommendations to President Joko Widodo, Indonesia's top economic minister said.

"We have already had the recommendations and we will submit the recommendations to the president tomorrow," Coordinating Minister for the Economy Darmin Nasution told reporters Wednesday after a three-hour meeting of ministers dealing with the project.

The president is likely to make a decision on the rail link as early as Friday.