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The Hidden Risk of Overfunding a 529

The Hidden Risk of Overfunding a 529

September 11, 2025

529 plans are one of the most powerful ways to save for college. They grow tax-free, withdrawals are tax-free for qualified expenses, and many states even throw in a tax deduction. For families who want to get ahead of rising tuition bills, they can feel like a no-brainer.

But what happens if you save too much?

Most families are worried about underfunding, but overfunding does occur—and the consequences can be costly. If you overfund a 529 and your child doesn’t use all the money for qualified expenses, any leftover withdrawals are subject to income tax plus a 10% penalty.

The good news: 529s are more flexible than they used to be. A few options include:

  • Roth IRA rollovers. Thanks to new rules, you can move up to $35,000 from a 529 into the beneficiary’s Roth IRA. This is a huge improvement, but it comes with caveats: the account has to be open for at least 15 years, annual contribution limits still apply, and the total rollover is capped.
  • Changing the beneficiary. You can assign the funds to another child, or even to yourself. But that assumes you have another qualified beneficiary, and it can create fairness issues within the family.
  • Non-qualified withdrawals. You can always take the money out, but taxes and penalties make this the least attractive option.

The better approach is to avoid overfunding in the first place. That means setting a clear savings target, aligning it with your family’s coverage goals (full tuition, partial, or something in between), and funding accordingly.

That’s exactly what our College Funding Compass is designed to do. In just a few minutes, you can enter a handful of details and get a clear, personalized roadmap for your family’s education savings. Simple, easy, and built to give you confidence without overcommitting.

👉 Start your College Funding Compass today