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Energy Review

49 Day Rule Calculator

If you are on a domestic fixed rate energy tariff with exit fees, Ofgem’s switching window protects you from the termination fee. It opens when your supplier provides its renewal statement or 49 days before the fixed term ends, whichever is earlier. The calculator shows the 49-days-before date; check your statement because your protected window may have opened sooner.

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Tip:Ofgem's rule opens the window when your renewal statement is provided or 49 days before the fixed term ends, whichever is earlier. Check your statement as well as this calculated date.

Frequently asked questions

What is the 49 day rule for energy tariffs?

Under Ofgem’s domestic supply licence, you can switch supplier without a termination fee during the switching window. That window begins when your supplier provides its renewal statement or 49 days before the fixed term ends, whichever is earlier. This calculator shows the 49-days-before date; your statement may give you an earlier date.

Do I have to pay exit fees to leave my energy tariff?

You can switch supplier without a termination fee once your switching window has opened. Before then, your supplier may charge an exit fee if your tariff terms allow it, so check your own contract.

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Rob Gibbs

Written by

Rob Gibbs

Hi, I'm Rob, and I run Energy-Review.co.uk. I initially started this project in 2018 when I was looking to switch energy suppliers and found there wasn't a website that provided simple, data-backed reviews on all the suppliers available. Since then, I have spent a lot of time (too much, some may say!) looking at all publicly available data about each supplier and writing reviews using this information. These reviews are updated as regularly as possible, and any data is backed up by a source where necessary. I have also started writing guides on various energy-related topics, which hopefully you will find useful. If you find any issues, please use our contact form to let us know.