This is general information, not tax or financial advice. Check IRS.gov for current limits.

College is one of the biggest bills a family faces. A 529 plan is the tax code's main tool for saving toward it.

What a 529 is

A 529 plan is a tax-advantaged investment account for education, named after Section 529 of the tax code and sponsored by states (you can use most states' plans and spend at eligible schools nationwide). The deal works like a Roth IRA for education: you put in after-tax money, it grows tax-free, and withdrawals are tax-free when spent on qualified education costs, per the IRS. Many states add a state income-tax deduction or credit for contributions.

There are two kinds. Education savings plans (the common type) invest in funds that rise and fall with markets. Prepaid tuition plans let you lock in today's tuition rates at participating public colleges, with less flexibility.

What counts as a qualified expense

For college: tuition, fees, books, supplies, and room and board at eligible schools. Beyond that, the rules have widened: up to $10,000 a year for K-12 tuition (a 2025 federal law raised this and broadened it starting in 2026 — check current IRS guidance), registered apprenticeship costs, and up to $10,000 lifetime per beneficiary toward student-loan repayment. Spend the money on anything else and the earnings portion owes income tax plus a 10% penalty (the penalty hits gains, not your original contributions).

Contribution rules

There's no annual federal cap, but contributions count as gifts: the 2025–2026 annual gift-tax exclusion is $19,000 per donor per beneficiary ($38,000 for a couple) before you must file a gift-tax form. States set high aggregate ceilings — often $235,000 to $600,000+ per beneficiary. A special "superfunding" election lets a donor front-load five years of gifts at once — up to $95,000 ($190,000 per couple) — without triggering a filing, as long as no other gifts go to that beneficiary for five years.

Flexibility and the new Roth rollover

A useful feature: you can change the beneficiary to another family member tax-free, so the money isn't stranded if one child skips college or wins a scholarship. And under the SECURE 2.0 Act, since 2024 you can roll unused 529 funds into the beneficiary's Roth IRA — up to $35,000 lifetime, Fidelity explains — subject to conditions: the 529 must be at least 15 years old, only contributions older than five years qualify, annual rollovers can't exceed that year's Roth limit, and the beneficiary needs earned income.

The downsides

  • Financial aid: a parent-owned 529 is counted as a parental asset on the FAFSA, trimming aid eligibility by up to ~5.6% of its value.
  • Investment risk: savings-plan balances can fall with markets and may not keep pace with tuition.
  • Fees vary by state plan — compare before opening.

Practical tips

Start early — tax-free compounding rewards time. Check whether your state offers a tax break for its own plan (more than 30 do), since that can outweigh another state's investment options. Keep receipts to prove withdrawals matched qualified expenses. And remember the limits — gift exclusion, K-12 cap, Roth-rollover rules — are set by statute and change, so verify current figures at IRS.gov or with a tax professional before acting.