By Kevin Luu, Co-Founder and Chief Learning Officer. Reviewed on 2026-09-30.
Federal law lets a 529 beneficiary roll up to $35,000, over their lifetime, from a 529 plan into their own Roth IRA, free of federal income tax and the 10% federal additional tax. The 529 must have been open for more than 15 years, money contributed in the last 5 years (and its earnings) cannot be moved, and each year’s rollover is capped at the annual IRA contribution limit ($7,500 for 2026). California does not follow this rule: a California resident pays state income tax plus a 2.5% additional tax on the earnings portion of the rollover.
For a family earning $750,000 or more, the rollover is a small safety valve on an overfunded 529, not a reason to put more into one. What matters is starting the 15-year clock early and knowing your other options for leftover money.
The five federal rules for a 529 to Roth IRA rollover
These rules come from IRC Section 529(c)(3)(E), added by SECURE 2.0 for distributions after 2023, and are summarized in IRS Publication 590-A (2025) and Publication 970 (2025).
- Same beneficiary. The Roth IRA must belong to the 529 beneficiary. You cannot roll your child’s 529 into your own Roth.
- Direct transfer only. The money must move trustee-to-trustee from the 529 plan to the Roth IRA custodian. A check paid to you or your child does not qualify.
- The 15-year rule. The 529 account must have been open for more than 15 years at the time of the rollover.
- The 5-year lookback. The rollover cannot exceed contributions made more than 5 years before the distribution date, plus the earnings on those contributions.
- Annual and lifetime caps. Each year’s rollover counts toward the beneficiary’s Roth IRA limit for that year ($7,500 for 2026, per IRS Notice 2025-67), and all rollovers over the beneficiary’s life cannot exceed $35,000.
Two details catch families off guard. First, the normal Roth IRA income limit (a modified AGI phase-out of $242,000 to $252,000 for joint filers in 2026) does not apply to these rollovers, under IRC Section 408A(c)(3)(E). Second, the beneficiary still needs earned income. The IRA limit for any person is the lesser of the annual limit or their taxable compensation, and any regular IRA contribution they make that year uses up the same room. A 16-year-old with no job cannot receive a rollover that year.
How California and Washington tax the rollover
California. The Franchise Tax Board states that California does not conform to the federal 529 to Roth provision. The rollover is includible in California taxable income and subject to an additional tax of 2.5% (FTB 3805P instructions, 2025). For a non-qualified 529 distribution, California taxes the earnings portion, not your original contributions. In practice, the cost is usually modest because the amounts are small. FTB does not spell out whether the owner or the beneficiary reports it; if it is the beneficiary, a young adult’s rate is often low. If the earnings portion of a $7,500 rollover is $4,500, the 2.5% additional tax is $112.50, plus California income tax on that $4,500 at the reporting person’s rate.
Washington. Washington has no individual income tax in 2026, so the federal treatment is the whole story. Washington’s new 9.9% income tax starting January 1, 2028 applies only to AGI over $1,000,000 (WA Department of Revenue), far above what a young adult beneficiary is likely to report.
Residency at the time of the rollover is what matters. A child who grew up in Seattle but now lives and works in California is a California taxpayer for that year.
Worked example: a San Jose family that superfunds in 2026
Assumptions (illustrative): married couple in San Jose, $950,000 of combined W-2 income, a daughter born in 2025. In January 2026 they open a ScholarShare 529 for her and each parent makes the five-year gift election, putting in $190,000 together ($95,000 each, 5 times the 2026 gift tax annual exclusion of $19,000, reported on Form 709). California gives no state deduction for the contribution.
| Question | Answer in this example |
|---|---|
| When does the 15-year clock run out? | The account passes 15 years in January 2041. The daughter is about 15. |
| Does the 5-year lookback bite? | No. All $190,000 went in during 2026, so it is decades old by 2041. |
| What could the account grow to? | At a hypothetical 6% a year for 18 years, about $542,000. Actual returns will differ. |
| How fast can $35,000 move? | If the IRA limit stayed at the 2026 figure of $7,500 (it is inflation-indexed, so it will likely be higher): $7,500 a year for four years, then $5,000 in year five. She needs earned income of at least the rollover amount each year, from a summer job or her first salary. |
| What is the $35,000 worth later? | Left in her Roth from about age 20 to 60 at a hypothetical 6%, about $360,000, with no tax on qualified withdrawals. |
The table shows the real limit of this tool for an affluent family. The rollover can absorb $35,000. An account superfunded at birth could easily be hundreds of thousands of dollars larger than college costs if your child earns a scholarship, attends a public university, or skips graduate school. The rollover is a good use for the last slice, not a plan for a large surplus.
What leftover 529 money costs if you just withdraw it
A non-qualified withdrawal is taxed only on its earnings, but the earnings face three layers: federal income tax, a 10% federal additional tax (Pub 970), and in California, state income tax plus the 2.5% additional tax.
Example: the owner (a parent in the 37% federal bracket, which starts above $768,700 of taxable income for joint filers in 2026 per Rev. Proc. 2025-32) withdraws $100,000, of which $60,000 is earnings. Federal income tax is $22,200, the 10% additional tax is $6,000, California tax at the 2025 10.3% rate (FTB 2025 rate schedules) is $6,180, and the California additional tax is $1,500. Total: about $35,880 on a $100,000 withdrawal, before any net investment income tax, which this example leaves out. That is why the options below usually come first.
Better options for an overfunded 529, in order
- Change the beneficiary to another family member. There are no income tax consequences when the new beneficiary is a member of the current beneficiary’s family, which includes siblings, first cousins, parents and the beneficiary’s own future children (Pub 970, Chapter 7). Moving money from the older child’s account to a younger sibling is the most common fix. A change to a beneficiary in a younger generation, such as a grandchild, can be treated as a gift for federal gift and generation-skipping transfer tax purposes (IRC Section 529(c)(5)(B)).
- Keep it for graduate school or the next generation. There is no federal deadline to use a 529. A surplus can wait for a law or medical degree, or become a grandchild’s account.
- Use the Roth rollover for up to $35,000 per beneficiary. Each child is a separate beneficiary with a separate $35,000 lifetime cap, but each account still needs its own 15-year history.
- Withdraw the rest. If the beneficiary receives a tax-free scholarship, Pub 970 waives the 10% additional tax on withdrawals up to the scholarship amount, though income tax on earnings still applies.
Common mistakes with the 15-year rule and beneficiary changes
- Opening the 529 late. The clock starts when the account opens, not when you start contributing heavily. Opening a 529 at birth, even with a small deposit, can let the rollover be available in the teen years.
- Assuming a beneficiary change keeps the clock. The IRS has not said whether naming a new beneficiary restarts the 15-year period. Until it does, plan as if each child’s rollover depends on an account that has had that child as beneficiary for more than 15 years.
- Rolling plan-to-plan to “refresh” the account. Moving a 529 to another state’s plan may be treated as a new account by some plans for the 15-year test. Ask the receiving plan in writing before moving an account you may later roll to a Roth.
- Expecting to move 401(k) money into a 529. There is no rollover from a 401(k) to a 529. Money would have to come out of the 401(k) as a taxable distribution first, then go in as a new contribution.
- Forgetting the earned-income test. A rollover above the child’s earnings for that year is an excess IRA contribution.
529 ownership and beneficiary transfers in brief
The account owner, usually a parent, controls the 529, including beneficiary changes and the Roth rollover request. Ownership changes are handled by each plan’s own form and rules, and are separate from a beneficiary change. Name a successor owner now, so the account is not frozen if something happens to you. If you hold assets for your child outside a 529, our guide to UTMA withdrawal tax rules covers how those accounts differ.
What to write down for your children
The rollover, the beneficiary changes and the surplus decision will likely happen 15 to 20 years from now, possibly when you are not the one making them. Write a one-page note in your FamilyKnowledge® Library: why you funded the 529 the way you did, what you want leftover money to do, and how you think about your child’s first Roth. As Kevin Luu puts it: “Your kids don’t need to inherit your portfolio. They need to inherit your decision-making process.”
Frequently asked questions
Is a 529 to Roth rollover the same as a Roth conversion?
No. A Roth conversion moves money from a traditional IRA or plan into a Roth and is taxable. A 529 to Roth rollover moves education savings into the beneficiary’s Roth IRA and is federally tax-free if the rules are met. It is closer to a contribution, which is why it counts against that year’s IRA limit and needs earned income.
Can parents use the rollover for their own Roth IRA?
Only if the parent is the 529 beneficiary. A parent can generally be named beneficiary of a 529 they own, but the 15-year question for a new beneficiary is not settled. Most parents earning $750,000 or more fund their own Roth through a backdoor Roth contribution or a workplace plan instead.
Does the 2026 IRA limit increase apply to rollovers?
Yes. The rollover cap for a year is that year’s Roth IRA contribution limit, which is $7,500 for 2026 (up from $7,000 for 2025). The $35,000 lifetime cap is a fixed dollar amount in the statute.
Next step
Check the open date on each child’s 529 this month. If an account is younger than you thought, or a child has none yet, open one now, because the 15-year clock cannot be backdated. Then add the surplus question to your next tax planning review, alongside your own retirement and benefits decisions. Families who want a second look at how 529s, gifts and Roth accounts fit together can start with our Tax & Wealth Assessment. For teaching the reasoning to your kids, see Age Five Wealth Education.
This article is general education, not individual tax advice. The right move depends on your family’s full picture.
Kevin has advised high-income W-2 tech and biotech families since 2015, and leads the education-first Age Five Family Office from Brea, California.
Connect on LinkedIn → · About KevinThis is part of how we approach Tax Management for high-income W-2 families at Bright Advisers.
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