A new pricing rule will require BT to maintain a sufficient margin between its wholesale and retail super-fast broadband charges.
Ofcom is making the regulatory change from April 1st 2015 following input from the European Commission.
The rule is designed to promote competition and investment in the market for super-fast broadband, in light of BT's dual role as an infrastructure provider and retailer of broadband deals.
According to Ofcom, it preserves BT’s current flexibility to set its wholesale fibre prices, which in turn provides the firm with incentives for future investment.
But at the same time, it means BT will not be able to offer fibre broadband discounts so heavy that rival operators cannot compete.
Ofcom’s indicative assessment shows BT is currently maintaining a sufficient margin between wholesale and fibre prices under the new rule. As such, the communications regulator has no plans to intervene.
But should any increases in BT’s costs not be reflected in future prices in future, Ofcom may have grounds for action.
The new pricing rule takes into account the costs and revenues of BT Sport, as well as other elements included by BT in its super-fast broadband bundles.
"Ofcom’s decision today is aimed at ensuring different operators can continue to invest and compete in the developing broadband market in years to come," the regulator added.
This is so consumers can benefit from competitive prices and high-quality, innovative services, the regulator stated.