Chairman & Founder of Digicel Group Denis O'Brien reacts during the APEC CEO Summit 2018 at the Port Moresby, Papua New Guinea, November 16, 2018. Fazry Ismail/Pool via
Chairman & Founder of Digicel Group Denis O'Brien reacts during the APEC CEO Summit 2018 at the Port Moresby, Papua New Guinea, November 16, 2018. Fazry Ismail/Pool via Reuters / POOL

Digicel Group said it is considering legal options after Papua New Guinea (PNG) imposed a $100 million tax that the telecoms firm said has potential "implications" for the planned A$2.1 billion ($1.57 billion) sale of the Pacific's biggest mobile network to Australia's Telstra.

Telstra Corp Ltd said last October it would buy the Pacific operations of Jamaica-headquartered Digicel in a deal largely funded by the Australian government, seen by observers as a way to block China's rising influence in the region. The operations include 2.5 million mobile phone subscribers across PNG, Fiji, Vanuatu, Tonga, Samoa and Nauru.

Digicel's Irish founder, Denis O'Brien, met with PNG Prime Minister James Marape last week to try to resolve the matter, Digicel said in a statement emailed to Reuters on Monday.

It said a "new arbitrary, company-specific tax" was introduced on March 25, which was "perplexing not just for Digicel, but also for the Papua New Guinea economy given the reputational and credit rating implications of this sudden, bizarre and unprecedented tax".

The act imposes a one-time tax liability on Digicel equal to about $100 million with a further penalty of $14 million for non-payment, the statement said.

"This matter requires urgent resolution given its implications for the sale of Digicel's Pacific operations to Telstra but also given the knock-on consequences for all foreign direct investment exiting Papua New Guinea," the statement said.

"Digicel is now engaged in discussions with the Papua New Guinea Government and other relevant stakeholders," the statement said.

Marape's office did not immediately respond to a request for comment.

A Telstra spokesman said in an emailed statement that the PNG tax was a matter for the current owner of Digicel Pacific. In response to Reuters' questions it said it was still awaiting PNG regulatory approvals for the deal.

"The acquisition of Digicel Pacific by Telstra in partnership with the Australian government has not yet received all of its regulatory approvals and has not (been) completed yet," it said.

The tax was first flagged last November, when Papua New Guinea outlined its 2022 Budget measures. Parliament was told Digicel holds 90% of the retail mobile voice and internet market.

The tax applies only to companies who control more than 40% of PNG's market for telecommunications and banking. Bank of South Pacific, the only other company affected, told the Australian Stock Exchange on Friday the tax came into effect on March 25 and must be paid annually in September.

($1 = 1.3358 Australian dollars)