transfer money on my account to child accoutn

You would need to try contacting support and speak to billing to see if they can. Otherwise, nothing can be transferred between account. 1-800-4my-xbox if you're in the US/Canada or http://support.xbox.com/contact-us

you can indeed transfer money from a parental account to a child account, can be done accidentally too, not sure if there is a way to transfer back as child account cannot transfer money.

This is exactly what happened to me! I transferred money from my Paypal to my child's Microsoft account for this, and now the money are locked there? Unbelievable! How do I get my money back?

I am having the same issue. I need to switch my account that my son has been using to a child account to limit his time. Either that or find a way to switch his game progress & money to his child account.

There is no way to demote an adult account to a child account and there is no way to transfer progress and currency to another account.

I looked for the gifting option, but no go unfortunately. I already have money on my account, but I don't think I can transfer that to them. If I purchase the V-bucks on my account would they be accessible from his? Dumb question I know, lol.

You cannot transfer your balance to a child account, but you can add money directly to it. I'll link the support page with instructions for this since it contains other useful sublinks. I think that is your best option here.

https://support.microsoft.com/en-us/help/4027024/microsoft-account-add-money-to-your-childs-account