Suu Kyi, who was ousted by an army takeover in February last year, had denied the allegation that she had accepted gold and hundreds of thousands of dollars given her as a bribe by a top political colleague.
The maximum punishment for the offence is 15 years in prison and a fine. Her supporters and independent legal experts have decried her prosecution as unjust and meant to remove the 76-year-old Suu Kyi from politics.
She had already been sentenced to six years imprisonment in other cases. News of the verdict came from a legal official who asked not to be identified because he is not authorised to release information.
Suu Kyi’s trial in the capital Naypyitaw was closed to the public, and her lawyers were barred from speaking to the media.