Upload your gas or electricity bill and we'll check every charge is right: your rates, your readings and the maths. If something's wrong, you get a ready-made complaint letter. Then we show you whether a cheaper tariff exists.
Unit rates and standing charges against your tariff and the current price cap
Meter readings: actual or estimated, and whether estimates look realistic
The maths: units × unit rate, days × standing charge, and the right VAT: 5% on gas, and no VAT on household electricity used from 1 October 2026 to 31 March 2027
Gas conversion from cubic metres or feet into kWh
Old charges: energy used more than 12 months ago that you usually can't be billed for
Economy 7 day and night splits
Your tariff end date, so you don't roll onto a pricier deal without knowing
Works for any utility bill from a UK energy supplier
Dual fuel, gas only, electricity only, credit meter or smart meter. Prepayment customers can upload a statement or top-up history.
What happens next
Your bill is right: you'll know for sure, and we'll show whether a cheaper tariff could save you money.
Something's wrong: we explain it in plain English, show what it's costing you and give you a complaint letter with your details filled in.
Frequently asked questions
Is this the same as a utility bill checker or energy tariff checker?
Yes. We check both the bill and the tariff you're on.
Can you check old bills?
Yes. Upload up to [X] bills to spot patterns like repeated estimates.
