# What is the difference between fixed and variable energy tariffs?

> Quick answer · Last updated 5 July 2026

Canonical HTML: https://moneyguide.org.uk/answers/fixed-vs-variable-energy-tariff-uk/
Markdown mirror: https://moneyguide.org.uk/answers/fixed-vs-variable-energy-tariff-uk.md

## In short

Fixed tariffs lock unit rates for the contract term; variable tariffs track the Ofgem cap quarterly. Fixes may beat the cap when prices are expected to rise.

Exit fees often apply if you leave a fix early — check before switching.

In the last 49 days before a fix ends you can switch without exit penalty.

Variable tariffs have no exit fees but payments change each cap reset.

See should I fix my energy tariff answer and compare energy guide.

## Related

- [Compare energy tariffs](https://moneyguide.org.uk/bills-utilities/compare-energy-tariffs-guide/)
- [Energy price cap explained](https://moneyguide.org.uk/bills/energy-price-cap-explained/)
- [Should I fix energy?](https://moneyguide.org.uk/answers/should-i-fix-my-energy-tariff/)

## Primary source

ofgem.gov.uk/information-consumers/energy-advice-households/energy-price-cap

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Independent UK money guidance from [Money Guide](https://moneyguide.org.uk). Information only — not regulated financial advice.