The Australian Competition Tribunal has once again cleared the $11 billion merger between wagering giants Tabcorp and Tatts Group to proceed, subject to one condition.

The ACT was reviewing its original decision, made in June, to allow the proposed merger after the Federal Court ordered further consideration of the deal following objections from the ACCC and Crownbet.

The ACT now says it will allow the merger on the condition that Tabcorp divest its Odyssey Gaming business in Queensland.