Three Ireland said its operating tax for 2018 jumped by 46% from €64m to €93m on the back of a 7% increase in its customer base and strong cost management.
The company said its EBITDA for the year rose to €245m from €191m, while it reported a profit after tax of €19.2m
Three said its market share went from 34.2% in 2017 to 35.1% in 2018.
It also said its sales and administration costs were slightly lower in 2018 compared to the previous year.
During the year, Three said it continued to invest heavily in its network, spending a total of €115m.
Robert Finnegan, CEO of Three Ireland, said that 2018 was a significant year for the company.
"Once again, we continued to invest heavily in our network delivering better service to our customers, which resulted in more consumers joining Three, increasing our base by 7%," Mr Finnegan said.
"For 2019 we've continued to build on our market share growth, completion of our digital transformation programme, as well as planning the roll out of our 5G network across the country," he added.
