Grandparents looking to give their grandchildren a lasting financial head start have a powerful tool at their disposal: the custodial Roth IRA.
This account works similarly to a standard Roth IRA, but because minors cannot legally hold their own accounts, a grandparent or other adult serves as custodian.
The custodian manages the account on the child’s behalf until the grandchild reaches adulthood, typically age 18 or 21 depending on the state.
One critical eligibility requirement is that the grandchild must have earned income before any contributions can be made to a custodial Roth IRA.
Without documented earned income, contributions are not permitted, which limits the strategy to grandchildren who take on paying jobs, even part-time or seasonal work.
Because Roth IRA contributions are made with after-tax dollars, the account grows tax-free, and qualified withdrawals in retirement are not subject to federal income tax.
The long-term compounding potential is significant: an annual contribution of $2,500 made over eight years for a 10-year-old could grow to approximately $503,460 by age 60, assuming a 7% annual return.
That projection assumes the grandchild leaves the money untouched, which brings the central challenge of this strategy into sharp focus.
When the grandchild becomes a legal adult, full control of the account transfers to them, and there is no mechanism to prevent early withdrawals beyond financial education and family trust.
Early withdrawals from a Roth IRA before age 59 and a half can trigger taxes and a 10% penalty on earnings, which could significantly erode the account’s long-term value.
Grandparents who are uncomfortable handing over full account access at 18 may consider an alternative strategy using a 529 college savings plan with a longer runway.
Under the SECURE 2.0 Act, which introduced new provisions starting in 2024, funds in a 529 plan can be rolled into a Roth IRA after the account has been open for at least 15 years.
The lifetime maximum for such rollovers is $35,000 per 529 plan beneficiary, and the funds move into the beneficiary’s own Roth IRA account.
This rollover option gives families greater flexibility when college savings go unused while still preserving the tax-free retirement growth advantage.
Financial advisors generally recommend pairing either strategy with early conversations about money, compounding, and the long-term cost of raiding a retirement account prematurely.
