Use form CH299 to apply for an extension of Child Benefit if your child is under 18, and has left approved education or training.
Use this online form to claim extended Child Benefit for up to 20 weeks. You could get the extension if your child is 16 or 17, has left approved education or training, and has either:
- registered for work, training or full-time education with a ‘qualifying body’ (eg a careers service or Connexions)
- signed up to join the armed forces
Related forms and guidance
Child Benefit when your child turns 16
When you can claim for a child over 16, approved education or training, and when payments stop or continue.