The two telcos informed the Australian Stock Exchange on Thursday that the Committee on Foreign Investment in the US and the US Federal Communications Commission had given the permissions needed for the deal to go ahead.
Permission was needed from these two bodies because of the change in control of TPG's submarine cable between the US territory of Guam and Sydney.
The merger, announced in August 2018, was given the go-ahead by the Federal Court in February, after the two companies challenged a decision by the competition regulator to block the deal because of it causing was said to be less competition in the sector.
VHA chief executive Iñaki Berroeta said merger preparations were continuing to proceed to schedule, despite the evolving COVID-19 situation.
“Our teams are prioritising support for our customers through the impacts of COVID-19, but we remain focused on progressing the merger,” he said in a statement.
“This unprecedented situation highlights the need for strong and resilient telecommunications companies to provide the services that Australians rely on.”