Households could save £173 yearly by switching to fixed energy deals before October cap rise

The price cap on energy bills is rising again in October, and for millions of British households, the timing could hardly be worse. Starting October 1st, gas and electricity charges will jump 4 percent under the government's price cap—the second increase in three months. For the 22 million households on default tariffs, this means annual bills will climb to £1,723 based on typical usage, just as people are preparing to turn their heating back on as temperatures drop.

But there is a way to cushion the blow. Switching to a fixed-rate tariff before the October rise takes effect could save households up to £173 a year, according to price comparison websites. Fixed tariffs lock in a set standing charge and unit costs for a defined period, usually one or two years, which means customers would be protected not only from October's increase but also from a widely predicted rise in January that analysts forecast could push bills up another 9 percent.

About 11 million homes—roughly 35 percent of all households—are already on fixed tariffs and will not be affected by this week's announcement. They remain insulated from price increases until their current deals expire. For everyone else, the window to act is narrowing. At the time of reporting, multiple fixed-rate options were available below the October cap figure. The cheapest on offer was a Fuse Energy tariff priced at £1,550 annually for a typical-usage household, undercutting the October cap by £173 and the current cap by £113. This deal comes in two versions: a 14-month fixed rate available through Uswitch and Confused.com, and an 18-month version offered by MoneySuperMarket.

Other suppliers have jumped into the market as well. Co-op Energy, Octopus Energy, E.ON Next, and Ecotricity all have fixed deals available that offer savings of more than £100 a year compared to the October cap. Some are exclusive to particular comparison websites, though many can be purchased directly from the supplier. Even Ofgem, the energy regulator, has begun actively promoting the benefits of fixed tariffs, noting that savings of £100 or more below the October price cap are readily available.

The urgency of switching is sharpened by what analysts at Cornwall Insight are predicting for January. If their forecast holds, bills will rise another 9 percent in the new year, pushing typical household costs to approximately £1,872 annually—a £149 jump from October's level. That figure will not be officially confirmed until November, but the direction of travel seems clear. A household that locks in a fixed rate now would sidestep both increases and gain certainty over what it will pay through the winter months, regardless of what happens to wholesale energy prices.

Before making the switch, however, households need to check the terms of their current contract. Gareth Kloet at Go.Compare advises checking how much time remains on existing deals and whether exit fees apply. The government has also provided some relief through a temporary cut to VAT on domestic electricity, reducing the tax from 5 percent to zero between October 1st and March 31st, 2027. This will save a typical household £45 a year and applies automatically to both those on fixed rates and those on the price cap.

Beyond switching suppliers, the most effective way to manage bills remains cutting energy consumption. Ofgem notes that many suppliers offer cheaper electricity rates to customers with smart meters who use power outside peak times, so it is worth asking about those options. For households struggling with costs, the warm home discount scheme will reopen in October, offering a one-off £150 discount on electricity bills to those who qualify. The broader advice is clear: act now, before October arrives and the next wave of increases takes hold.