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What to check before your fixed energy tariff ends
When a fixed energy deal ends, the supplier typically moves the household to a standard variable tariff under the Ofgem default tariff cap. The decision sits between staying on a new fixed deal or defaulting to the cap.
Why this matters
Ofgem updates the default tariff cap on a quarterly cycle. The level of the cap, and the fixed deals available against it, change between cycles — so the right answer at the end of one fix is not the right answer at the end of the next.
Most fixed tariffs allow a switch in the final 49 days without exit fees. That window is the practical action period.
What to check before your fixed energy tariff ends
Tariff end date
Confirm the precise day the fixed tariff ends. Default movement to the variable tariff usually happens the day after.
Default tariff / standard variable rate
Check the rate the household will move to and how it sits against the current Ofgem default tariff cap.
Meter readings
Submit a reading on or close to the end date. That gives a clean break between the old tariff and the new one.
Direct debit amount
Check whether the direct debit changes when the tariff changes. A new tariff often resets the assumed annual consumption.
Exit fees
Most fixed tariffs allow a switch in the final 49 days without exit fees. Confirm the rule on your tariff if you are considering switching early.
Timing window
When to act
The Ofgem 49-day window before the tariff end is the practical action period. Earlier than that, exit fees may apply on the current deal. Later than the end date, the household is already on the variable rate.
Related pages
Energy tariff endings
Track the tariff end date and avoid moving onto the cap by default.
Energy fixed tariff ending report 2026
Evidence-led report on UK fixed energy tariff endings.
Ofgem lower standing charge tariff pilot
What Ofgem's pilot means before your fixed tariff ends.
Ofgem price cap update
What the latest cap change means at tariff end.
Sources
- Ofgem — Default tariff cap, quarterly update.
- Ofgem — Rules on exit fees and switching in the final 49 days.
- Citizens Advice — Energy supplier switching.
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