Conversions can only be made to a beneficiary’s Roth IRA. A parent who saves in a child’s name with a 529 plan cannot repay unused funds to their own retirement account. Rollovers are only allowed once a 529 account has been opened for at least 15 years. Any amount of money transferred from a 529 plan to a Roth IRA account is subject to the annual
Roth IRA contribution limits.