Why has my direct debit increased when I'm on a fixed tariff?

A fixed tariff means that the unit rates and standard charge won't change, but payments can change if consumption increases or isn't in line with the estimates provided at the time of your switch.

However, we sometimes hear of problems because providers make incorrect calculations about your usage or assume you'll stay on their standard tariff when your fix ends.

If you don't already, do try to provide your supplier with regular meter readings. This'll help it to keep on top of your usage and then your direct debits may decrease in future.

Plus if you feel that your supplier has increased your direct debit unfairly, you can challenge it.

For more info, see Energy direct debits help.