When your fix ends, the default tariff can start.We flag the fallback before it happens.
Get a reminder before your fix ends so you can review the fallback tariff before it applies.
Get a renewal reminder- No bank access required
- Just the dates you already know
- 100% independent
How a fixed energy tariff ending works
Most UK fixed energy tariffs run for a 12, 18 or 24-month term.
Before the tariff ends, the supplier issues a tariff-end notification.
If no new deal is agreed, the account typically moves onto the supplier's standard variable tariff.
Variable tariff pricing sits under the Ofgem price cap and can shift at each cap review.
The tariff end date is fixed in advance and sits on the supplier's records.
Tariff mechanism
Fixed-vs-variable decision trigger
Common energy tariff-end outcomes
These outcomes are predictable — and avoidable if you act before the tariff end date.
Standard variable rate applies
The default move is onto the supplier's standard variable tariff, which is repriced at each cap review.
The decision window ends at the tariff end date.
Fixed-vs-variable decision skipped
Without a review at the end date, the active fixed-vs-variable decision is replaced by a default.
Renewal is the natural moment to make the decision deliberately.
Direct debit may be recalculated
Suppliers typically recalculate the direct debit when the tariff changes, which can shift monthly outgoings.
End-of-tariff review is the moment to confirm the direct debit is right.
Easy to miss the date
Tariff-end notifications can be easy to overlook in busy households.
After the end date, the variable tariff applies.
How Onremind protects you
Add the renewal date
The one listed in your policy or renewal email.
We track the countdown
Independently, in the background.
You get alerted early
While review, comparison and switching are still possible.
Illustrative energy tariff-end pattern
Tariff end pattern (illustrative)
Illustrative pattern only — not a real user case. Without a review before the tariff end, the account would have continued on the variable tariff.
Energy research and updates
Evidence, timing guidance and current developments relevant to fixed energy tariff end dates.
UK Energy Fixed Tariff Ending Report 2026
Research on tariff-end pricing, cap dynamics and why households still need to review the date.
Read the energy tariff ending reportWhat to check before your fixed energy tariff ends
A short checklist for tariff choice, direct debit and price cap before the end date.
Read the energy tariff end guideOfgem price cap update — what it means at tariff end
A summary of recent Ofgem cap movements and what they mean before your fixed deal ends.
Read the latest energy tariff updateRelated household bill end dates
Other contract end dates you can protect with a date-based reminder:
Energy is a tariff-end decision problem.
The default after the fixed term is a variable tariff, not a decision.
A reminder before the tariff end date keeps the decision deliberate.
The same date-led pattern shapes broadband contracts and TV contracts.
See all how Onremind works, browse common questions, or read the UK Renewal Rip-Off Report for the wider picture.