Your bank details do not decide whether you qualify for Child Benefit; eligibility usually depends on being responsible for a child under 16, or under 20 if they remain in approved education or training. You will normally be asked for a UK bank or building society account so payments can be made, and you should tell HMRC if you do not have one. Contact the Child Benefit Office for alternative payment arrangements and check the latest guidance on GOV.UK, as the available options can depend on your circumstances.