PARENTS who know their teenager’s plans in September are being urged to extend their claim now to continue to receive Child Benefit. HM Revenue and Customs (HMRC) has written to 1.5 million eligible parents reminding them to extend their Child Benefit claim for their 16 to 19-year-old. Child Benefit is worth £26.05 per week – or £1,354.60 a year – for the eldest or only child and £17.25 per week – or £897 a year – for each additional child. More than 509,000 parents of teenagers, who are staying in full-time education or approved training, have already extended their Child Benefit claim. For families who fall into this category, the online Child Benefit tax calculator provides an estimate of how much benefit they will receive and what the charge may be.