Changing your energy tariffs
Still on a variable tariff? Change to our fixed tariff and get rates even cheaper than the July price cap.
And, if we launch a cheaper fixed deal in the months to come you can switch for free.
Tariffs for our existing customers
To get the best deal possible, we offer a range of tariffs to suit you. Log in to your online account to see what tariffs you can choose.
Fixed energy tariffs
Lock your energy prices and avoid any price rises.
Standard Variable
Our flexible plans where prices can go up or down.
Electric vehicle tariffs
Get our lowest electricity rates overnight with our EV tariff and charge your car for less.
Cap Tracker
A variable rate that always stays up to £50 below the Ofgem price cap.
More tariffs we can offer
Smart Export Guarantee tariffs
If you generate renewable electricity at home, then you could get paid for what you export. Plus, as an existing electricity customer, you get our best SEG tariff rates.
Smart energy tariffs
Smart solutions to help you take steps to reduce your bills and your carbon footprint.
Change tariff as an existing customer – in 3 easy steps
1. Log in to your online account
2. Find a cheaper tariff
Click on 'Switch tariff' under the heading 'Tariff' and check to see if there’s one with 'Estimated saving'.
3. We do the rest
Once you’ve picked your tariff, we’ll get you switched over within 24 hours. There’s nothing else you need to do but enjoy the savings.
Why stay with British Gas?
- Getting a new deal is easy - choose a new tariff in just a few minutes online
- Great rates - as good as, or better than, those available to new customers switching to us
- Save more - with half-price electricity every Sunday when you join PeakSave
- No exit fees - we don’t charge exit fees if you choose a new fixed tariff with us
- No waiting - switch deal today and your new tariff starts tomorrow
- Get rewarded when you refer a friend - share up to £100 in Amazon gift cards if your friends and families switch their energy to us
- Service you can rely on - We won Best Overall Improvement in the Uswitch Energy Awards 2024 & 2025. This means we performed best - out of all energy suppliers - at improving our overall customer satisfaction scores this year.
When can I change my tariff
If you’re on a:
Fixed tariff
We'll get in touch a month before your current tariff expires to choose a new tariff:
- No exit fees to pay in renewal window
- If you don't choose a new tariff, we'll automatically move you to our Standard Variable one when yours ends.
Note: Exit fees applies only if you change from a fixed tariff to Standard Variable before your renewal window.
Standard Variable tariff
If you're on a Standard Variable tariff you can change to a fixed tariff at any time. Just log in to your online account a pick one of our available tariffs.
If you're on a Standard Variable tariff because you’ve moved into a new home that we supply:
- Tell us you’ve moved in, and set up an online account, you’ll be able to choose a new tariff.
Note: There's no fees to pay if you move from Standard Variable to another British Gas tariff.
Fixed or variable tariffs?
Should I switch to a fixed or variable tariff?
We explain fixed rate and variable rate energy tariffs so you can decide. Learn more about fixed vs variable energy tariffs.
Our customers rate us 'Excellent' on Trustpilot
Half-price electricity with PeakSave
We’re proud partners of Team GB and ParalympicsGB, but you don’t need to be a superstar athlete to take part in a big event.
Enjoy one every Sunday with half-price electricity, 11am to 4pm, when you join PeakSave.
What else can you get?
Frequently asked questions
If I change my tariff, will I still get PeakSave?
Yes, PeakSave is available to all electricity customers with a smart meter, no matter what tariff you choose.
Can I change my tariff without exit fees?
If you’re on a fixed tariff, then you can swap to another available fixed tariffs without paying exit fees.
If you’re on a fixed tariff, and you want to move to our Standard Variable tariff, then an exit fee will be applied.
There’s never an exit fee to pay if you move from our Standard Variable tariff to a fixed tariff.
Additional information
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Terms and conditions apply. You could save by choosing our fixed tariffs instead of our Standard Variable tariff, which is governed by Ofgem’s price cap. Savings based on average domestic gas and electricity energy consumption values (gas: 11,500kWh, electricity: 2,700kWh). The exact savings achieved will vary depending on your energy use. Our customers taking part in PeakSave are saving £24 on average per year. PeakSave average savings per household up to 30th September 2024. If the price cap falls after April 2025, you could pay more for your energy with a fixed tariff. See our latest predictions for the price cap. Read more information on how homes could save with British Gas.
Dual fuel customers save £50 compared to the Ofgem price cap, while single fuel customers save £25.