529 Plans Unpacked: Benefits, Limits and Tax Traps
Section 529 plans are no longer limited to traditional college tuition. Under current federal law, the funds may cover certain K–12 costs, vocational education, apprenticeships, professional credentials and student loans. In limited circumstances, unused funds may even be transferred to the beneficiary’s Roth IRA.
The expanded flexibility makes 529 plans attractive, but the tax rules require careful coordination.
A 529 plan is an education savings program. Contributions are invested for a designated beneficiary, while the account owner generally retains control over the funds.
Contributions are not deductible for federal income-tax purposes. However, earnings accumulate without current federal tax, and withdrawals are federally tax-free when used for qualified expenses. California mostly conforms to federal tax treatment with exceptions discussed later in this article.
There is no federal income limit restricting who may contribute.
For postsecondary education, qualified expenses generally include:
- Tuition and required fees
- Books, supplies and equipment required for enrollment
- Computers, related equipment, software and internet access used primarily by the student
- Certain services for a special-needs student
- Room and board for a student enrolled at least half-time, subject to applicable limits
Eligible schools generally include colleges, universities, vocational schools and other postsecondary institutions participating in federal student-aid programs. The student does not necessarily have to pursue a four-year degree.
Funds may also pay qualifying fees, books, supplies and equipment for a registered apprenticeship program, as well as certain postsecondary credentialing expenses.
Beginning in 2026, federal law permits up to $20,000 per beneficiary each year to be withdrawn for an expanded range of K–12 expenses. These may include tuition, curriculum materials, books, tutoring, standardized and college-admission testing, dual-enrollment fees and certain educational therapies for students with disabilities. The annual limit applies collectively to all 529 accounts maintained for the beneficiary.
Although federal law now permits up to $20,000 annually for an expanded range of K–12 expenses, California does not conform. For a California taxpayer, the earnings portion of a 529 plan used for K-12 expenses is subject to a 2.5% tax.
A 529 plan may pay up to $10,000 during an individual’s lifetime toward principal or interest on qualified student loans. An additional $10,000 lifetime limit may be available for each of the beneficiary’s siblings. California does not limit how much a 529 plan may pay toward student loans.
Student-loan interest paid with a tax-free 529 withdrawal cannot also be used to claim the student-loan interest deduction.
Rolling unused funds into a Roth IRA
Federal law permits certain unused 529 funds to be transferred directly to a Roth IRA maintained for the beneficiary. The principal restrictions include:
- A $35,000 lifetime rollover limit
- The 529 account generally must have existed for at least 15 years
- Each year’s transfer is subject to the annual Roth IRA contribution limit
- Contributions made to the 529 account during the preceding five years, and the earnings attributable to them, are not eligible
- The transfer must be made directly from the 529 plan to the beneficiary’s Roth IRA
- The beneficiary must satisfy the applicable Roth IRA compensation requirement
How much can be contributed?
Federal tax law does not impose a specific annual 529 contribution limit. Each state plan establishes an aggregate account limit intended to prevent contributions from exceeding the beneficiary’s anticipated education costs.
Contributions are treated as gifts to the beneficiary for federal gift-tax purposes. For 2026, a contributor may generally give up to $19,000 per beneficiary without using any lifetime gift-tax exemption.
A special election permits up to five years of annual-exclusion gifts to be contributed at once. Thus, an individual could contribute as much as $95,000 in 2026 – or $190,000 for a married couple if the requirements are met – and treat the contribution as made ratably over five years. A federal gift-tax return is generally required to make this election, and additional gifts to the same beneficiary during the five-year period require careful review.
What happens if the withdrawal is not qualified?
When a withdrawal exceeds the beneficiary’s adjusted qualified expenses, the earnings portion of the nonqualified distribution is generally subject to federal income tax and an additional 10% federal tax. The contribution portion is not taxed again because it was made with after-tax dollars.
Exceptions to the additional 10% tax may apply in circumstances such as the beneficiary’s death or disability, receipt of a tax-free scholarship or attendance at a U.S. military academy. These exceptions generally eliminate only the additional tax – not necessarily the regular income tax on the earnings.
State taxes and penalties may also apply.
A 529 plan can offer:
- Tax-deferred investment growth
- Federally tax-free qualified withdrawals
- High contribution capacity
- No federal income restriction on contributors
- Continued control by the account owner
- The ability to change beneficiaries, generally to another qualifying family member
- Estate-planning opportunities through accelerated gifting
- Several options for unused funds, including a beneficiary change or qualifying Roth IRA rollover
Avoid claiming two benefits for the same expense
Expenses supporting a tax-free 529 withdrawal generally cannot also be used to claim the American Opportunity Tax Credit, Lifetime Learning Credit or another tax-free education benefit. Scholarships and employer-provided educational assistance may also reduce the expenses available to support a tax-free withdrawal.
As a practical matter, withdrawals should generally be matched to qualified expenses incurred during the same calendar year. Families should retain receipts, school account statements and records showing how each distribution was used.
Before making a large contribution, taking a substantial withdrawal or transferring unused funds to a Roth IRA, contact our office. Advance planning can help maximize the available tax benefits while avoiding unexpected income, penalties or gift-tax reporting requirements.
