Using figures from 30 September 2026
How Much Will My Energy Bill Go Up in January 2027?
Enter what you pay now and see your likely bill under the latest price cap forecasts.
How This Calculator Works
Your bill on a standard variable tariff moves roughly in line with the Ofgem price cap. We take your current monthly payment and scale it by the change between today’s cap (£1,723 a year) and each forecast.
It’s an estimate. Your real bill depends on your usage, region, meter type and whether gas and electricity move by different amounts. It doesn’t include any debt or credit on your account.
On a Fixed Deal?
A cap rise won’t change your rates until your fix ends. Check your end date: if it ends soon, you may roll onto a variable tariff just as prices rise. You can switch without exit fees in the last 49 days of a fix.
What Can I Do About It?
- Consider fixing before the new cap takes effect.
- Send a meter reading just before the change so earlier usage is billed at the old rate.
- See the full forecast breakdown and sources.
- Switch to Octopus through our link to get £50 credit on your account.