The money accumulating in Child Trust Funds and Junior ISAs is tax-free, the Daily Telegraph reminds readers. In both cases the child gets access to the cash at age 18, but with Junior ISAs they can ‘roll over’ their investments into an adult ISA and preserve the tax exemption. Parents and other relatives can sign up for monthly contributions totalling up to £3,720 during the tax year (£3,840 for 2013-14).