The man at the centre of the J$1 billion fraud racket was remanded when he appeared before the Corporate Area Criminal Court on Monday.
He is Christopher Moore an employee of Tax Administration Jamaica (TAJ) and a resident of Portmore in St. Catherine.
Moore who is scheduled answer several charges including fraud and breaches of the Cyber Crime Act, will return to court on July 21.
It's alleged that over an unspecified period, Moore, an Information Technology (IT) expert employed to the East Street branch of the TAJ, manipulated the system and reduced tax assessments of companies and individuals.
After the TAJ assessed taxpayers, Moore would enter the computer system, reduce the tax levied resulting in the Government losing more than one billion dollars.
It's also alleged that he collected fees.
The Revenue Protection Division in the Ministry of Finance which led an operation on June 20, seized documents and computers at Moore's house with the names of individuals and companies.
The year long operation, which also involved the Major Organised Crime and Anti-Corruption Taskforce, stretched across the Corporate Area and St. Catherine.