Now that the new improved 12-sided pound coin is in circulation, you have until the 15th of October 2017 to empty your piggy banks and glass jars and either spend your ‘round pounds’, or put them into a savings or investment account to make sure you don't risk losing their value altogether.
Remember the value of investments can go down as well as up, and you could get back less than you’ve paid in. Tax treatment depends on individual circumstances. Tax law may change in the future.
If the child withdraws money from the Investment Junior ISA before the end of 5 years, there will be a £50 deduction from the withdrawal value.