You can make one-off payments (wire transfers deposits) as and when you choose, but the combined total of all payments (or subscriptions) must not exceed any given annual tax year allowance.
Interactive Brokers accepts wire transfers only, and there is a minimum subscription amount of £1. Your child’s IBUKL Junior Stocks and Shares ISA can only have GBP cash.
Although other Junior ISA providers might have different terms, only parent or legal guardian can pay into your child’s Junior ISA with IBUKL.
Additional Information