Gas and electricity suppliers know that energy bills going back months or even years, known as back-bills, can be a concern for customers.
Both the customer and the supplier have responsibilities with regards to billing. But where a micro business customer has taken all reasonable steps to avoid the need for back-billing, suppliers have committed to limit any back-bill to three years for electricity bills, and to four to five years for a gas bill. This is a minimum standard and in many cases suppliers have voluntarily gone beyond this to offer greater protection to their micro business customers.
- Energy Bills: a guide for business customers (PDF 700KB)
- Voluntary Standards for back billing of Micro Business Energy Customers - May 2016 (PDF 270KB)