529 College Savings Plans: What They Cover, What They Don't, and How They're Taxed

What Is a 529 Plan?

A 529 plan is a tax-advantaged savings account designed to help families set aside money for education expenses. Authorized under Section 529 of the Internal Revenue Code, these accounts are sponsored by states, state agencies, or educational institutions. Two main types exist: college savings plans (investment accounts where balances grow based on market performance) and prepaid tuition plans (which let families lock in future tuition at today's prices at participating schools).

Contributions to a 529 are made with after-tax dollars, meaning you don't get a federal income tax deduction. However, the account grows tax-free, and withdrawals used for qualified expenses are also federally tax-free — a meaningful long-term advantage. For a broader introduction to all major funding sources, see the Education Financing Beginner's Roadmap.

Qualified vs. Non-Qualified Expenses

Understanding what counts as a qualified expense is critical, because non-qualified withdrawals trigger income tax plus a 10% federal penalty on earnings.

What 529 funds can cover

• Tuition and fees at accredited colleges, universities, vocational schools, and some K–12 institutions (up to $10,000 per year for K–12)
• Room and board — up to the school's published cost-of-attendance allowance, whether the student lives on or off campus
• Books, supplies, and equipment required for enrollment
• Technology — computers, internet access, and related software if primarily used for coursework
• Special needs services for a beneficiary with a disability
• Student loan repayment — lifetime limit of $10,000 per beneficiary (and $10,000 per sibling)
• Registered apprenticeship programs approved by the U.S. Department of Labor

What 529 funds cannot cover

• Transportation, travel, or car payments
• Health insurance or medical expenses
• Personal living expenses beyond the school's published allowance
• Sports, club activities, or entertainment
• Repayment of federal PLUS loans beyond the $10,000 cap

This article is general financial information and education, not personalized tax or investment advice. Consult a qualified financial adviser or tax professional for guidance specific to your situation.

Tax Treatment and State Deductions

At the federal level, 529 accounts offer tax-free growth and tax-free qualified withdrawals — no capital gains tax applies when you reinvest earnings within the account. There is no federal deduction for contributions.

At the state level, the picture varies significantly. More than 30 states offer an income tax deduction or credit for contributions to their own state's plan. A smaller number of states offer a deduction for contributions to any state's plan (often called "tax parity"). Several states — including California, Delaware, Hawaii, Kentucky, and New Jersey — offer no state deduction at all.

Because state rules differ, it's worth reviewing your own state's Department of Revenue or 529 program website before choosing a plan. You are not required to use your home state's plan, but forgoing a state deduction is a real cost to weigh against any investment advantages another state's plan might offer.

Contribution Limits and Gift Tax Rules

529 plans have no annual contribution limit set by federal law, but total balances are capped by each state (limits typically range from $235,000 to over $550,000 per beneficiary, depending on the state). Contributions above the annual federal gift-tax exclusion — $18,000 per donor per beneficiary in 2024 — may require filing a gift tax return, though they rarely result in actual tax owed for most families.

A special provision called superfunding (or 5-year gift-tax averaging) allows a lump-sum contribution of up to five times the annual exclusion ($90,000 in 2024) to be treated as if it were spread over five years, potentially shielding it from gift tax. No additional gifts to that beneficiary can be made during the five-year period without gift-tax consequences.

Starting in 2024, the SECURE 2.0 Act introduced a new rule: unused 529 funds can be rolled over into a Roth IRA for the beneficiary, subject to conditions — the account must be at least 15 years old, the rollover is capped at $35,000 lifetime, and annual Roth IRA contribution limits still apply. This change reduces the cost of over-saving significantly.

If Your Child Doesn't Use the Funds

One concern families raise is what happens if the beneficiary doesn't attend college. Several options are available:

• Change the beneficiary to another family member (sibling, cousin, parent, or even yourself) with no tax penalty.
• Use funds for the beneficiary's student loans up to the $10,000 lifetime limit.
• Roll over to a Roth IRA for the beneficiary under the SECURE 2.0 rules described above.
• Withdraw the funds — earnings (not contributions) will be subject to ordinary income tax plus the 10% federal penalty. The original contributions come back to you tax- and penalty-free since they were already taxed.

Families interested in layering 529 savings with workplace education benefits can also explore how employer programs may offset costs for adult learners returning to school. See how employer tuition assistance programs work for more detail. For a full glossary of education finance terms referenced in this article, the Education Financing Key Terms reference is a useful companion.