Carers' Allowance sometimes can't be paid if you are getting at least the same amount from certain other social security benefits.
However, it is always worth claiming Carers' Allowance as you may still be eligible for Income Support/Pension Credit, Housing/Council Tax benefit and Health benefits, even if Carers' Allowance is disallowed.
For further information, please see the Community Advice Service page on financial help for carers|.