Australia Post refuses to reveal how many millions of dollars its managing director earned last year, despite a freedom of information request from Fairfax Media.

Ahmed Fahour's last published salary was $4.8 million in 2014, but the government-owned corporation stopped publishing executive remuneration details last year.

A request for his 2015-16 salary was refused because it "relates to the commercial activities of the corporation" and "would involve the unreasonable disclosure of personal information".

"It is my view that there is no public interest in the disclosure of personal information pertaining to officers of Australia Post," the company's FOI officer wrote.