By Jessica Frank-Keyes Changes to child benefit are set to save higher earning parents an average of £1,260 a year as the high income charge threshold increases next week. Parents earning over £50,000 are currently hit by the high income child benefit charge, which sees the taxman reclaim a sliding percentage of the payments, with those earning above £60,000 having to pay the full amount back. But Chancellor Jeremy Hunt announced in the Spring Budget last month that from April 8 the threshold would increase to £60,000, with no one earning below £80,000 having their child benefit reclaimed in f…