Choose the new tariff and give the new supplier your postcode, current tariff and yearly usage from your bill, and it does the rest within five working days. On a fixed deal the last 49 days carry no exit fee.
Mind My Money finds what you actually pay and use, and works through the switch with you.
This is for households in Great Britain that have been meaning to switch and want the whole process in one place, including the parts that cost money if you get the timing wrong. It is taken from Ofgem's own guidance and from Citizens Advice, both read on 19 September 2026 and linked below.
Everything you need is on it. Ofgem lists what the new supplier will ask for: your postcode, the name of your current supplier and your current tariff, what you pay per unit in kilowatt hours, and how much energy you use in a year. The yearly usage is the figure that decides which tariff is cheaper for you, so find it first. It is usually printed on the bill or in your supplier's online account.
While you have the bill open, check two more things: whether you are on a fixed tariff and when it ends, and whether you owe your current supplier anything.
If you are on a fixed tariff and leave before it ends, you may have to pay your current supplier an exit fee. But in the last 49 days of a fixed deal you can switch without one. Citizens Advice puts it simply: “If you're on a fixed tariff contract you can switch if you have 49 days or less left on your contract.” With 50 days or more left, an exit fee may apply, though switching can still come out cheaper once you have done the sums.
Debt matters too. Ofgem says you can still switch if you have owed your supplier money for less than 28 days, in which case it goes on your final bill, or if you have a prepayment meter and owe up to £500. If you have been in debt to your supplier for more than 28 days, you cannot switch until that is settled.
Ofgem suggests three ways to compare: going to suppliers directly, using energy price comparison websites, and, if service matters to you as much as price, Citizens Advice's ranking of the largest suppliers by complaints and waiting times. Put your yearly usage in, not an estimate, because a tariff with a lower unit rate and a higher standing charge can be cheaper for one household and dearer for another.
On a prepayment meter you need a prepayment tariff, and not every supplier offers one, so check that before you pick.
Your old supplier has to send you a final bill within six weeks, and if your account is in credit, refund it within ten working days of sending that bill (both from Citizens Advice). That refund is easy to lose track of, so put the date in your calendar and look for it on your bank statement.
Mind My Money goes through your spending on your own computer, and your energy bills are in there. It can find what you actually pay and use, which is what comparing needs, and where you decide to switch it works through the sign-up with you and shows you everything before it is sent. It has no view on which supplier you should choose.
Runs on your own computer. Pay what you decide, including nothing.