The rules about when we can pay a backdate are different for people who are working age and people who have reached pension age.
If you (or your partner if you have one) have reached pension age, you don’t have to ask us to backdate your claim – we will automatically check if we can when we receive your form.
You can also save it at any point and return to it later.
The form calls Housing Benefit ‘HB’ and Council Tax Benefit ‘CTB’ (this is now called the CTR Council Tax Reduction elsewhere).
Further Information Shelter's information on backdating Housing Benefit.