<prompt> Human: My wife and I just welcomed in our new baby daughter to this world and weve already taken the liberty to open a 529 plan for her. While my parents visited during the holidays, they stated they wanted our daughters social security number to open their own account for her instead of contributing to the existing 529 plan. Whats everyones thoughts on this? Is this normal? They current live overseas so Im not sure there are tax benefits. The only thing left I can think of, is that theyd be the account owners rather than us and can do with the money as they please.  <response>: The benefit to them is that the child will know for certain that their grand parents were thinking of her since their money wouldnt be mixed in a general account. 