Debt flagging applies in instances where a customer has debt on their account over a certain threshold and timeframe and they attempt to switch supplier. The guidelines are set by the CRU for domestic premises.
For domestic premises, debt flagging will be applied if you try to switch electricity or gas suppliers when you have outstanding overdue payments which are:
If you're renting and you move into a new property and want to change suppliers, you can't be debt-flagged based on the debt of a previous tenant.
If you have a dual fuel account, your current supplier can only raise a flag on your electricity &/or gas account where there is an overdue payment in line with the levels set by the CRU above.
*Means the number of days after the date at which the bills states that payment is due by. ‘Days’ are taken to mean calendar days unless otherwise specified.