To anyone who gets child tax credits, please always tell them of any change in circumstance, no matter how small. I noticed the other day that my benefit was based on when I first had Noah and was on maternety leave from my old job, so it said I worked 25 hours a week, which I havent done in a year now. So Icalled them up and told them that Ihad just stopped working, and I added up all my payslips and told them exactly what I erned this tax year so far. Iasked if this would effect the amount I currently get each week, and they said prob not a lot. Well yesterday I got a letter in the post saying Ishould have been getting Â£40 a week not the Â£10 a week I had been getting, so they just stuck over Â£1,000 in my bank account in back payments and have increased my monthly amounts!!! So please, take 2 mins from your day to check your claim form to make sure they are using the most upto date information on you.