HM Revenue & Customs

Child Benefit Number

Your Child Benefit number can be found on letters HM Revenue & Customs (HMRC) have sent to you. If you are paid directly into an account, your account statement may show your Child Benefit number next to any payments made to you by HMRC. Your Child Benefit number is made up of 8 numbers beginning with 5,6,7,8 or 9 followed by 2 letters.