Internet provider TPG Telecom has lifted its half year profit by 15 per cent thanks to solid growth in broadband subscribers.

TPG made a net profit of $90.1 million in the six months to January 31, up from $78.3 million in the same period in the previous fiscal year.

The company also upgraded its full year earnings guidance to $325-330 million, which is $25-45 million more than previously expected.

Half year earnings were $166 million, up eight per cent on the previous corresponding period.

Shares in the company were up 43 cents, or 7.5 per cent, at $6.19 at 1027 AEDT.

TPG’s profit growth was driven by a 17 per cent rise in earnings from the company’s consumer division, thanks to subscriber growth, and higher revenues per user as more customers signed onto its home phone bundle plans.

Subscribers to the home phone bundle plans rose by 61,000 during the half, which offset a slide in subscribers of other products.

The company’s smaller corporate division lifted its earnings by 25 per cent through revenue growth and higher margins.

TPG will pay a fully franked interim dividend of 4.5 cents per share, up from 3.5 cents a year ago.