Energy bill calculator
Estimate your gas and electricity bill under the Ofgem price cap, and check whether a fixed deal would save you money.
Ofgem price cap, 1 October – 31 December 2026, Direct Debit, average across England, Scotland and Wales. Electricity carries no VAT from 1 October 2026 to 31 March 2027. Your region and payment method change the exact rates.
The price cap from 1 October 2026
For a Direct Debit customer, the cap limits electricity to 26.32p per kWh with a 54.83p daily standing charge, and gas to 7.97p per kWh with a 29.68p daily standing charge (national averages). That works out at £1,723 a year for a typical home using 2,500 kWh of electricity and 9,500 kWh of gas.
The government has removed VAT from domestic electricity between 1 October 2026 and 31 March 2027. The cap is a limit on rates, not on your total bill: the more you use, the more you pay.
Fixed deal or price cap?
A fixed tariff locks your unit rates and standing charges for 12 to 24 months. It beats the cap if its rates are lower, or if prices are expected to rise. Watch out for exit fees if you want to leave early.
Frequently asked questions
Where do I find my usage?
On your annual statement or in your supplier’s app, shown in kWh over the last 12 months.