Compare the AER, minimum deposit, fees, withdrawal rules and whether the rate is fixed or can change. Check the account’s age limits and whether you or the child controls access, as some accounts transfer to the child at 16 or 18. A Junior ISA may offer tax-free saving, but the money is generally locked away until the child turns 18. Interest on ordinary children’s accounts can sometimes be taxable, particularly on money given by a parent, so check the rules on GOV.UK and confirm the provider is covered by the FSCS.