Japan and Panama on Wednesday agreed to start negotiations on a tax information exchange agreement to enhance transparency in the financial system. The move comes at a time of scrutiny over offshore tax avoidance by the rich and powerful following a leak of records from a prominent law firm.

"I would like to expect progress in our negotiations so that we can achieve transparency in our tax information," Prime Minister Shinzo Abe said during a joint news conference with Panamanian President Juan Carlos Varela.

Varela said he hopes Japan will be the first country to sign an agreement with Panama under the OECD framework of a common reporting standard.