What is a 529 Plan? A Guide to How 529 College Savings Plans Work

A 529 plan is a state-sponsored, tax-advantaged investment account designed to invest for education expenses. Named after Section 529 of the Internal Revenue Code, these plans let your contributions grow and come out tax-free when used for qualified education expenses. They’re one of the most popular ways to invest for a kid’s education, and recent law changes have made them meaningfully more flexible than they used to be.

This guide walks through what a 529 plan is, how the tax mechanics work, what the money can be used for, and how to decide if one is right for your family. If you’re comparing 529s to other ways to invest for your kids, see our guide to investing for kids or the direct custodial account vs. 529 plan comparison.

The two types of 529 plans

The two types of 529 plans are college savings plans and prepaid tuition plans. They work differently, and it’s worth understanding which one this guide focuses on.

College savings plans are the common option and what most people mean when they say “529 plan.” Your contributions are invested in a portfolio you choose. Earnings grow tax-free based on market performance and qualified withdrawals are also tax-free. Every state and the District of Columbia sponsors at least one college savings plan.

Prepaid tuition plans let you prepay tuition at today’s rates at participating in-state public colleges and universities. These plans lock in current tuition costs and are meant to hedge against tuition inflation. They’re less common, where only about nine states currently offer them to new enrollees, and are more restrictive than college savings plans.

The rest of this guide focuses on college savings plans.

How a 529 plan works

Opening a 529 plan creates two roles: the account owner (usually a parent or grandparent) and the beneficiary (the kid whose education the money is for). The account owner keeps full control of the account: choosing investments, making contributions, deciding when and how withdrawals happen, and (if needed) changing the beneficiary later. The beneficiary doesn’t control the money and doesn’t own the account. They’re simply the person whose qualified education expenses the funds are covered for.

Your contributions are invested in a portfolio you select from the plan’s menu. Most 529 plans offer two main investment approaches:

• Age-based portfolios that automatically shift from equities to bonds as the beneficiary approaches college age
• Static portfolios with a fixed allocation the account owner chooses
   

Age-based portfolios are the default for many families because they handle the gradual shift toward more conservative investments automatically.

Plans are administered by states, but most let non-residents open accounts. You’re not limited to your home state’s plan, though your home state’s plan often comes with a state income tax deduction that makes it the practical default.

529 plan tax benefits

529 plans offer two layers of tax benefits. At the federal level, earnings grow tax-free and qualified withdrawals are also tax-free. At the state level, most states offer an income tax deduction or credit for contributions to their home-state 529 plan, and a handful offer tax parity that allows deductions for contributions to any state’s plan. Contributions are not deductible on federal taxes.

Federal tax treatment

Contributions to a 529 plan are not deductible on your federal tax return. Once the money is in the account, earnings grow federally tax-free, and withdrawals used for qualified education expenses come out federally tax-free. Non-qualified withdrawals trigger income tax on the earnings portion plus a 10% federal penalty (there are exceptions, like if the beneficiary receives a scholarship).

State tax treatment

State tax benefits vary significantly. Most states offer a state income tax deduction or credit for contributions to the home-state 529 plan. A handful of states (sometimes called “tax parity” states) allow deductions for contributions to any state’s plan. A few states offer no deduction at all, and states without income tax don’t offer one by definition. Deduction amounts range from around $1,500 to effectively unlimited depending on the state.

Because of state tax benefits, many families open their home state’s plan even if it isn’t the highest-performing plan nationally. The upfront tax savings often outweigh modest performance differences. For your state’s specific rules, check your state’s 529 plan documentation or consult a qualified tax professional.

What can a 529 plan be used for?

529 plans cover a broader range of education expenses than most families realize. The list has expanded significantly since 2017, with K-12 tuition, registered apprenticeships, and student loan repayment all added through federal law changes. Using 529 funds for anything not on the qualified list triggers income tax on the earnings portion plus a 10% federal penalty.

A few specific questions come up a lot:

• Rent. Rent qualifies as room and board, as long as it’s within the school’s published cost of attendance for off-campus housing.
• Graduate school. Graduate and professional school tuition and fees qualify at eligible institutions.
• Studying abroad. Expenses at eligible foreign institutions qualify. Check the school’s eligibility status before spending 529 funds.
   

For the full definition of qualified expenses, consult IRS Publication 970 or a qualified tax professional.

Contribution limits and 5-year gift tax averaging

529 plans don’t have a federal annual contribution limit, but contributions are subject to federal gift tax rules. For 2026, a single donor can give up to $19,000 per recipient ($38,000 for married couples who elect to split gifts) without filing a gift tax return. Contributions above those amounts require filing Form 709 but generally don’t result in tax owed unless you’ve used up your lifetime gift and estate tax exemption ($15 million per individual in 2026).

Each state sets an aggregate lifetime contribution limit per beneficiary, typically between $235,000 and $575,000 or more. Once the account reaches the state’s limit, no further contributions can be made, but the funds can keep growing.

The 5-year gift tax averaging option

529 plans offer a unique federal benefit: you can contribute up to 5 years’ worth of gift tax exclusions in a year and spread the contribution evenly over 5 years for gift tax purposes. For 2026, that means a single donor can contribute up to $95,000 in one year ($190,000 for married couples) without triggering gift tax reporting, as long as no additional gifts are made to that beneficiary for the following 5 years.

This is sometimes called “superfunding” and is a popular strategy for grandparents looking to move money out of their taxable estate while jump-starting a grandkid’s education fund. A grandparent couple contributing $190,000 when a grandkid is born gives that money 17-18 years to grow tax-free before college.

How to open a 529 plan

Here’s a look at how to open a 529 plan:

1. Decide which state’s plan to use. Most families choose their home state’s plan to capture the state tax deduction. You’re not required to, though. Any state’s plan is open to residents of any state.
2. Compare plans. If your home state’s deduction is modest or unavailable, you can shop around. SavingForCollege.com is a common reference for plan comparisons. Look at fees, investment options, and historical performance.
3. Gather your information. You’ll need the account owner’s Social Security number, the beneficiary’s Social Security number and date of birth, and a funding source for making contributions.
4. Open the account. You can open most 529 plans directly through the state plan’s website. Some families open through a financial advisor, which may cost more but comes with guidance.
5. Set up contributions. Automatic monthly contributions are the easiest way to fund a 529. You can also make one-time contributions, and family members can contribute directly to most plans.
    

The 529-to-Roth IRA rollover: SECURE 2.0 changed everything

The biggest historical objection to 529 plans was overfunding risk. If your kid didn’t go to college or used less than you’d saved, you were left with a decision between changing the beneficiary, waiting, or paying taxes and a 10% penalty on non-qualified withdrawals.

The SECURE 2.0 Act, effective January 2024, added a new option: you can now roll unused 529 funds into a Roth IRA in the beneficiary’s name, tax-free and penalty-free. It comes with five conditions:

• 15-year account age. The 529 must be open for at least 15 years. Changing the beneficiary may reset the clock (the IRS hasn’t issued final guidance).
• 5-year contribution hold. Contributions and their earnings from the last 5 years aren’t eligible to roll over.
• Annual Roth limit applies. Each year’s rollover counts against the beneficiary’s annual Roth IRA contribution limit ($7,500 for 2026, $8,600 for age 50+).
• $35,000 lifetime cap per beneficiary. That’s the total amount that can be rolled over for any one person.
• Beneficiary earned income. The beneficiary must have earned income at least equal to the rollover amount that year. The Roth IRA must be in the beneficiary’s name.
   

One useful note for higher earners: the normal Roth IRA income limits (MAGI restrictions) don’t apply to 529 rollovers. Because the rules are fact-specific and the IRS is still issuing guidance on some details, talk with a qualified tax professional before initiating a rollover.

What if your kid doesn’t use all the 529 funds?

Four options exist for unused 529 funds, each with different trade-offs:

• Change the beneficiary to another eligible family member: a sibling, cousin, parent, niece or nephew, or even yourself. The transfer is tax-free.
• Roll up to $35,000 into a Roth IRA for the beneficiary, following the SECURE 2.0 conditions above.
• Leave it invested and use it later. Most plans have no time limit on using the funds, so they can roll forward for graduate school, a future kid, or a grandkid.
• Withdraw non-qualified and pay income tax on the earnings portion plus the 10% federal penalty.
   

One important exception: if the beneficiary receives a scholarship, you can withdraw up to the scholarship amount from the 529 without the 10% penalty. You’ll still owe income tax on the earnings portion, but the penalty is waived. The same exception applies for U.S. military academy attendance and certain other forms of education assistance.

How 529 plans affect financial aid

On the FAFSA, a parent-owned 529 plan is assessed at up to 5.64% of its value in the Student Aid Index calculation. That’s more favorable than most other asset types, including custodial accounts (which count as student assets and are assessed at up to 20%).

Under the simplified FAFSA that took effect for the 2024-25 academic year, distributions from grandparent-owned 529 plans are no longer reported as student income. This removed the old “financial aid trap” that used to discourage grandparents from contributing. Note that the CSS Profile, used by about 200 private colleges, may still consider these. For the full breakdown, see our deep-dive on custodial accounts.

Is a 529 plan right for your family?

A 529 plan is a strong fit if education is your clear investing goal, you want tax-free growth on qualified education expenses, you live in a state with a meaningful 529 tax deduction, or you’re a grandparent looking for an estate planning tool. The SECURE 2.0 Roth rollover makes 529s significantly more forgiving if plans change.

A 529 plan may not fit if you want maximum flexibility on how the money can be used, you’re saving for non-education goals (a car, a first home, business seed money), or you want the kid to control the money when they become an adult.

Many families use a 529 for education and a custodial account for everything else. For the full decision framework, see our custodial account vs. 529 plan comparison.

Does Acorns offer 529 plans?

No. Acorns doesn’t offer 529 plans. If a 529 fits your family’s goals, you can open one with your state’s plan administrator or through a financial advisor. If you also want flexibility beyond education, Acorns Early Invest offers a UTMA custodial investment account for kids on the Acorns Gold plan. Many families use both: a 529 for education and a custodial account for everything else.

Investing involves risk, including loss of principal. Past performance does not guarantee future results. No level of diversification or asset allocation can ensure profits or guarantee against losses.

Frequently asked questions

Are 529 contributions tax deductible?

529 contributions are not tax deductible on federal taxes. However, most states offer a state income tax deduction or credit for contributions to the home-state 529 plan, and a handful of states offer tax parity that allows deduction of contributions to any state’s plan. Deduction amounts vary by state. For your state’s rules, consult your state’s 529 plan documentation or a qualified tax professional.

What are the 529 plan contribution limits?

529 plans don’t have a federal annual contribution limit, but contributions are subject to the annual gift tax exclusion ($19,000 per recipient in 2026, or $38,000 for married couples splitting gifts). Each state sets an aggregate lifetime limit per beneficiary, typically between $235,000 and $575,000 or more. 529 plans also offer a unique 5-year gift tax averaging option that lets a donor contribute up to $95,000 ($190,000 for married couples) in a single year and treat it as spread over 5 years for gift tax purposes.

Can you have multiple 529 plans for one kid?

Yes. A kid can be the beneficiary of multiple 529 plans, opened by different people (a parent and a grandparent, for example) or in different states. Gift tax rules apply to each contributor separately, and the aggregate contribution limit set by each state is per beneficiary across all accounts in that state.

What happens to the 529 if my kid gets a scholarship?

If your kid receives a scholarship, you can withdraw an amount equal to the scholarship from the 529 penalty-free. You’ll still owe income tax on the earnings portion of that withdrawal, but the 10% federal penalty is waived. Alternative options include changing the beneficiary to another family member, rolling up to $35,000 into the beneficiary’s Roth IRA under SECURE 2.0, or leaving funds invested for future education needs like graduate school.

Can I change the beneficiary of a 529 plan?

Yes. You can change the beneficiary of a 529 plan to another eligible family member, including siblings, cousins, nieces and nephews, parents, or even yourself, without tax consequences. The IRS defines “member of the family” broadly for this purpose. Changing the beneficiary may affect the 15-year clock for a future Roth IRA rollover.

Can grandparents open a 529 plan?

Yes. Grandparents commonly open 529 plans for grandkids, and 529 plans offer a unique benefit for generous grandparents: 5-year gift tax averaging allows a contribution of up to $95,000 ($190,000 for married couples) in a single year without triggering gift tax reporting. Under the simplified FAFSA that took effect for the 2024-25 academic year, grandparent-owned 529 distributions no longer count as student income for federal financial aid, which removed the old concern about hurting aid eligibility.

Is a 529 plan better than a custodial account?

It depends on your goal. A 529 plan offers tax-free growth potential specifically for qualified education expenses and a favorable FAFSA treatment. A custodial account (UGMA or UTMA) offers flexibility to use funds for anything that benefits the kid. Many families use both. For the full side-by-side comparison, see our custodial account vs. 529 plan guide.