Council Tax Benefit is a benefit for people on a low income to help them pay council tax. It is paid by your local authority. If you are entitled to Council Tax Benefit, your council tax bill is reduced.
Remember to check that you are paying the right amount of council tax. You may qualify for discounts because you live on your own, or a reduction because you are disabled. If you have a 'severe mental impairment' such as Alzheimer's disease, or if you are under 18, you don't have to pay council tax at all.
Second Adult Rebate is a form of Council Tax Benefit that can be paid instead of the main type of Council Tax Benefit. It also reduces your Council Tax bill – see under heading What is Second Adult Rebate.
The following link will take you to the relevant page on the adviceguide website
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to adviceguide Council Tax benefits