Moody's Investors Service may cut Chorus' Baa2 credit rating after the Commerce Commission released a draft plan to curb prices the company can charge retailers to access its network.
Standard and Poor's said its ratings on Chorus (BBB/stable) were unaffected by the commission's draft decision.
''Importantly also, we note that there remains significant capacity for Chorus to accommodate regulated reductions in network access pricing at the BBB rating level,'' S&P analyst Paul Draffin said.
Excluding the potential impact of the draft UBA pricing, S&P was forecasting Chorus' funds from operations to debt to remain more than 20% in the next two years, well above expectations for the BBB rating of more than 15%, he said.
The Moody's review affects $US2 billion ($NZ2.44 billion) of debt. The regulator on Monday released a draft determination that would cut the price of Chorus' basic service relating to the unbundled local copper loop (UCLL) component of its unbundled bitstream access (UBA) to $8.93 per line a month from December 2014 from $21.46.
''There is no doubt in my mind that the Government will step in on the issue. The Government has a mandate to roll-out ultra-fast broadband through fibre. But by cutting the price of copper, there is now a mixed message that will slow the take-up of fibre. The Government will have a say and I suspect the issue won't go on long,'' Mr Timms said.
Chorus said that would slash as much as 40%, or $160 million a year, from operating earnings while changes to wholesale pricing for UCLL would have a $20 million earnings impact.
If implemented as proposed, the pricing cut was likely to have a material impact on Chorus' credit profile and be inconsistent with a Baa2 profile, Maurice O'Connell, a Moody's analyst, said. It would ''exacerbate'' Chorus' negative free cashflow position and lead to materially elevated leverage, putting significant pressure on the company's key financial metrics.
The Baa2 rating was the second-lowest investment grade level issued by Moody's Investors Service. If Chorus's credit rating fell below investment grade while debt was still owed Crown Fibre Holdings for the government-sponsored fibre network build, the network company was banned from paying dividends without CFH's approval.
Mr Timms believed Chorus was blindsided by the commission announcement but he criticised the company for not rejecting the recommendations more forcefully.
He pointed to the example set by infrastructure and electricity company Vector whose chairman Michael Stiassny was more outspoken when faced with regulatory authorities trying to impose their will on the listed company.
''I suspect this is all new for Chorus but their response was disappointing."
The way the commission's announcement also caused concern for investors, and it was no wonder investors got annoyed with the regulators.
''Investors buy a share one day at $3.40, the commission issues a draft decision and the share price falls by 50c.
"What sort of encouragement is that for people to invest."
The share price was likely to remain around the $2.95 mark until the uncertainty was settled, Mr Timms said.
Yesterday, Chorus closed at $2.78.
• The Commerce Commission started with a list of 31 countries but removed the United States because of the largely unregulated approach to wholesale bitstream pricing.
• Of the remaining countries, the primary source of information was a questionnaire that was sent to regulators in various countries.
• Nineteen of the 30 benchmark countries were eliminated from consideration as they did not regulate a wholesale bitstream access price using a cost-based approach. Only three countries remained after applying all four criteria - Belgium, Denmark and Sweden.
• When the configuration of the network was also taken into account, Belgium was removed leaving just Denmark and Sweden.
• The $8.93 is the mean of the $10.51 (Denmark) and $7.36 (Sweden) assessed monthly cost of UBA (unbundled bitstream access) in those countries.