An application to claim child benefits can usually be made 48 hours after you have registered the birth of your child, or once a child comes to live with you. An application for child benefit can be backdated for up to 3 months. 

An application for child benefit is usually made online either using the government gateway. If you are unable to complete a claim online, it is also possible to claim child benefit by completing the Child Benefit form CH2 and sending it to the Child Benefit Office. The address is on the form. If a claim is being made for more than 2 children, complete the additional child CH2(CS) form and send it with your CH2. It is also possible to contact HMRC to make a claim by phone if the online or postal routes are not available. Making an application through the government gateway will usually be the fastest way to make a claim.

Child benefit is also usually payable for children who come to the UK. However, there are a number of rules which must be met in order to claim. HMRC must be notified without delay if a child receiving child benefit moves permanently abroad.

The child benefit rates for the only or eldest child in a family is currently £26.05 a week and the weekly rate for all other children is £17.25. These rates will increase to £27.05 and £17.90 respectively from April 2026.