The annual savings figure we show you is the difference between the cost of the tariff you’re currently on and the potential new tariff.

If the tariff you’re on now finishes part way through the year, your supplier will put you on their standard rate, which will normally be more expensive than a fixed deal.

If this is the case, we’ll show you the difference between the cost of your potential new tariff and the one you’re on now, until that deal runs out. Then, we’ll show you the difference between your potential new tariff and your supplier’s standard rate.