British Gas is raising dual fuel bills by 5.5% hitting an estimated 4.1 million customers with a £60 a year hike.
The energy giant blamed the move on rising wholesale prices and policy costs.
The price of the British Gas standard variable tariff will climb by £60 to £1,161, an average 5.5% rise for a typical dual fuel customer.
Mark Hodges, chief executive, Centrica Consumer, said: “We fully understand that any price increase adds extra pressure on customers’ household bills.
“This increase we are announcing today is reflective of the costs we are seeing which are beyond ou