What Is a 529 Plan and How Does It Work? (2026 Guide)

A 529 plan is a tax-advantaged savings account designed for education expenses. If you’re saving for a child’s college education — or your own — here’s everything you need to know.

What Is a 529 Plan?

A 529 plan (named after Section 529 of the Internal Revenue Code) is a state-sponsored savings account that lets you invest money for education expenses. The money grows tax-free, and withdrawals for qualified education expenses are also tax-free at the federal level.

Most states also offer a state income tax deduction or credit for contributions — which makes 529s one of the most efficient ways to save for education.

What Can 529 Money Pay For?

529 funds cover a wide range of education costs:

Tuition and fees at colleges and universities
Room and board (up to college’s cost of attendance)
Books, supplies, and required equipment
Computer and internet access (if used for school)
K-12 tuition (up to $10,000 per year per student)
Student loan repayments (up to $10,000 lifetime per beneficiary)
Registered apprenticeship programs

Non-qualified withdrawals are subject to income tax plus a 10% penalty on the earnings portion.

New in 2024-2026: 529 to Roth IRA Rollover

One of the biggest rule changes in recent years: you can now roll unused 529 funds into a Roth IRA for the beneficiary. Key rules:

The 529 account must have been open at least 15 years
Rollovers count against the annual Roth IRA contribution limit
Lifetime rollover limit of $35,000
The beneficiary must have earned income

This eliminates the biggest objection to 529 plans — “what if my kid doesn’t go to college?” — because unused funds can now become retirement savings.

How to Choose a 529 Plan

You’re not required to use your own state’s plan. You can open any state’s 529. The key factors:

Check Your State’s Tax Deduction First

Many states offer a deduction only for contributions to their own plan. If your state offers a deduction (most do), compare the after-tax value of that deduction against the investment options elsewhere.

For example: if your state offers a $5,000 deduction at a 5% income tax rate, that’s $250 in tax savings. Weigh that against whether the investment options are worth it.

Look for Low-Cost Investment Options

Top-rated 529 plans by investment quality:

Utah My529 — Consistently rated top tier; Vanguard funds, low fees
Nevada (Vanguard 529) — Direct-sold plan with excellent Vanguard index funds
New York 529 Direct Plan — Vanguard funds, good for NY residents (state deduction)
Illinois Bright Start — Strong for IL residents, competitive investment options

Avoid Advisor-Sold Plans

529 plans sold through financial advisors add sales loads and higher fees that drag on performance over 18 years. Stick to direct-sold plans unless you have a specific reason to work with an advisor.

How Much Should You Save?

Rule of thumb: if you want to cover roughly 1/3 of a four-year public university education, aim for $250–$350/month starting at birth. Full private university coverage requires significantly more.

Use a 529 calculator (most brokerage and state plan websites have these) to set a specific target based on your timeline and target school type.

What Happens If the Child Doesn’t Go to College?

Your options:

Change the beneficiary — Switch to a sibling, parent, cousin, or even yourself
Roll into a Roth IRA — Up to $35,000 lifetime (new 2024 rule)
Use for other eligible education — Trade schools, apprenticeship programs, K-12
Non-qualified withdrawal — Pay taxes and 10% penalty on earnings only (contributions come out tax-free)

The Bottom Line

529 plans are the most efficient way to save for education costs. The tax-free growth over 15–18 years compounds significantly, and the new Roth IRA rollover option removes the downside risk of over-saving. Open one early, invest in low-cost index funds, and let the math do the work.