Adding child's debit card to Apple Wallet

Once he becomes 13, most countries permit the use of Apple Wallet. However, some countries or regions require the user be at least 16. Apple doesn’t maintain a list of countries by age. You’re welcome to use the Apple support article I linked to below to contact Apple support in your country or region and confirm the age requirement.

Contact Apple for support and service - Apple Support

Is your child part of an Apple Family Sharing Group? If so, the group organizer has to add the card. Apple has a minimum age of 13 to use an electronic wallet. However, many countries around the world have higher minimum ages. What country are you in?

Sorry, you’ll not be able to add a payment method, for your child, to Apple Wallet.