Make a claim for Council Tax Reduction When you can claim and how to make a claim for Council Tax Reduction (sometimes called Council Tax Support). Alternative Council Tax Reduction (Second Adult Rebate) You may be able to get a reduction on your Council Tax bill if you live with an adult who is 18 years old or over and is on a low income. Supporting documents for a benefit or reduction claim You must provide documents, such as evidence of identity and proof of earnings, with your application form. Appeal a Housing Benefit or Council Tax Reduction decision Any 'person affected' by a decision regarding Housing Benefit or Council Tax Reduction can ask us to revise our decision. Backdating your benefits or reduction If there has been a reason which stopped or delayed you making a claim for Housing Benefit or Council Tax Reduction you can ask for your claim to be 'backdated'.