On 20th March 2020, the Income Tax (Amendment) Bill 2020 was passed, giving Gibraltar domestic effect to the double tax treaty, and the protocol to that treaty, that were signed by Gibraltar and the UK in October 2019.
This follows on from the UK, who ratified the treaty under UK domestic law on 16th March 2020. The double tax teary, and the protocol, will now come into force when Gibraltar and the UK have notified each other that their domestic legislative processes required to bring that agreement into effect are complete.
For more information on the double tax treaty with the UK, see here. Or speak to a Gibraltar tax specialist.