Which State's 529 Plan Works Best for Your Family

The best 529 plan for you depends on your home state's tax deduction, not which state's plan has the highest investment returns

Most people should open a 529 in their own state first, because nearly every state offers a state income tax deduction when you contribute to your state's plan. That deduction is worth more than any difference in investment performance between plans. If your state offers no deduction, or a very small one, then you can open a plan in any other state without penalty.

The second factor is investment options. Some state plans offer low-cost index funds; others charge higher fees or limit you to actively managed funds. A plan with $0.20 in annual fees per $100 invested will outpace a plan with $0.50 in fees, even if the underlying investments perform identically. You can compare the actual fund lineups and expense ratios on each state plan's website.

A third factor — and the least important — is investment performance. Past returns do not predict future returns, and the difference between a plan that returned 8% last year and one that returned 7.8% will shrink to nothing over 10 or 15 years if fees are equal.

Key Takeaways

• Your home state's 529 plan usually offers a state income tax deduction that makes it the best choice, even if another state's plan has lower fees.
• If your state offers no tax deduction or a deduction under $500 per year, you can open a plan in a state with lower fees without losing money.
• Compare the actual fund expense ratios listed on each plan's website, because a difference of 0.30% per year compounds significantly over 15 years.
• Some states let you deduct contributions to any state's 529 plan, which means you can choose based on fees alone.

How state tax deductions work in 529 plans

When you contribute to your state's 529 plan, you can deduct that contribution from your state taxable income in the year you make it. The deduction amount varies by state. New York allows up to $235,000 per beneficiary per year (as of 2024); Illinois allows $20,000 per person per year; some states allow $2,500 or $5,000. A few states — including Wyoming, Texas, and Florida — offer no state income tax deduction because they have no state income tax.

The tax savings are real money. If you live in New York and contribute $10,000 to New York's 529 plan, you save roughly $685 in state income tax that year (at the 2024 top rate of 6.85%). If you live in Illinois and contribute $10,000, you save roughly $495 (at the 2024 top rate of 4.95%). That is money you keep; it is not a loan or a credit you have to repay.

A handful of states — including Arizona, Colorado, Indiana, Iowa, Kansas, Missouri, Montana, and Pennsylvania — let you deduct contributions to any state's 529 plan, not just your home state's. If you live in one of these states, you can choose a plan based purely on fees and investment options, because you will get the tax deduction either way.

Comparing fees across state plans

A 529 plan's total cost to you is the sum of the underlying fund's expense ratio (what you pay the fund company) plus any plan-level fees (what you pay the state plan administrator). Some plans charge nothing at the plan level; others charge $30 to $50 per year. Some plans waive fees if you set up automatic contributions or maintain a minimum balance.

The fund expense ratio is the larger number. An index fund in one plan might cost 0.05% per year; an actively managed fund in another might cost 0.75% per year. Over 15 years, that 0.70% difference compounds. On a $50,000 balance growing at 6% annually, the lower-cost plan would leave you with roughly $1,800 more at the end.

You can find the expense ratios and plan fees on each state's 529 website, usually under a document called the "Program Description" or "Fact Sheet." The SEC's EDGAR database also lists expense ratios for plans that are registered as mutual funds. Do not rely on a plan's marketing materials; read the actual fee schedule.

State plans with the lowest fees

New York's Direct Plan, Utah's my529 plan, and Nevada's Vanguard 529 plan are consistently cited as having low fees, because they offer index fund options with expense ratios under 0.10% and charge little or nothing at the plan level. However, the "best" low-cost plan for you depends on whether you live in a state that offers a tax deduction for out-of-state contributions.

If you live in a state that deducts only in-state contributions, compare your home state's plan fees to these national low-cost options. If your home state's plan charges 0.50% per year and New York's charges 0.08%, the fee difference is 0.42% annually. Over 15 years on a $50,000 contribution, that difference is worth roughly $3,500 in lost growth. That is larger than the tax deduction in many states, so it may be worth switching.

If you live in a state with no income tax (Texas, Florida, Wyoming, Nevada, South Dakota, Tennessee, Washington) or a state that allows deductions for any state's plan, you should prioritize fees over state affiliation. Open the plan with the lowest total cost.

When to choose a plan outside your home state

You should consider an out-of-state plan if your home state offers no tax deduction, or if the deduction is capped so low that it is worth less than the fee savings elsewhere. For example, if your state offers a $500 deduction per year and your home state plan charges 0.60% in fees while a low-cost national plan charges 0.10%, the fee savings will exceed the tax deduction within a few years.

You can open a 529 plan in any state, regardless of where you live or where the beneficiary lives. There is no penalty for choosing a plan outside your state. The only consequence is that you will not receive your home state's tax deduction — but if your home state offers no deduction or a small one, that is not a loss.

Some families open multiple 529 plans for the same child: one in their home state to capture the tax deduction, and another in a low-cost state for additional savings. This is legal and common. The only limit is the aggregate contribution limit across all plans for the same beneficiary, which is $235,000 per beneficiary (as of 2024) in most states.

How to research your state's specific plan

Start by visiting your state's 529 plan website directly. Search "[Your State] 529 plan" and look for the official state program site, not a third-party comparison tool. On the official site, download the Program Description or Fact Sheet, which lists all fees, expense ratios, and the tax deduction amount.

Next, check whether your state allows deductions for out-of-state plans. This information is usually on your state's Department of Revenue website or in the state income tax instructions. If your state allows out-of-state deductions, you can compare plans on fees alone.

Then, if you are considering an out-of-state plan, visit that state's 529 website and download its fee schedule. Compare the total annual cost (plan fees plus fund expense ratios) across the plans you are considering. Use a 15-year time horizon and assume a 6% annual return to estimate the long-term impact of fee differences.

Investment performance and why it matters less than fees

Some 529 plans advertise past investment returns as a reason to choose them. Past returns are not a reliable guide to future performance. A plan that returned 9% last year might return 4% next year; a plan that returned 7% might return 10%. Over a 15-year period, the difference between a plan that averages 6.5% and one that averages 6.3% is small compared to the difference between a plan that charges 0.10% in fees and one that charges 0.60%.

The reason is that fees are certain and ongoing, while returns are uncertain and variable. You know for sure that a 0.50% fee difference will cost you money every single year. You do not know whether one plan's investments will outperform another's. Over time, the certain cost of fees dominates the uncertain benefit of higher returns.

This is why financial research consistently shows that low-cost index funds in a low-fee plan outperform high-cost actively managed funds in a high-fee plan, even when the actively managed funds have a track record of strong past performance.

Frequently Asked Questions

Can I move money from one state's 529 plan to another without paying taxes?

Yes. You can roll over funds from one 529 plan to another 529 plan for the same beneficiary once every 12 months without triggering taxes or penalties. The rollover must go directly from plan to plan; if you withdraw the money yourself, it becomes taxable. Some plans charge a small fee to process the rollover, so check before you move.

If I move to a different state, do I have to move my 529 plan?

No. Your 529 plan stays open and continues to grow tax-free, regardless of where you move. However, you will no longer receive your old state's tax deduction on new contributions. You may become may be able to access for your new state's deduction instead. Check your new state's rules to see whether it allows deductions for out-of-state plans or only in-state plans.

What if my state's 529 plan has high fees but a large tax deduction?

Compare the numbers. If your state offers a $2,000 annual deduction (worth roughly $300 in taxes saved at a 15% combined tax rate) but your plan charges 0.60% in fees while a low-cost alternative charges 0.10%, the fee difference costs you roughly $250 per year on a $50,000 balance. The tax deduction is worth more, so stay in your state's plan. If the fee difference is larger or the deduction is smaller, do the math for your specific situation.

Do I have to open a 529 in the state where my child will go to college?

No. A 529 plan is not tied to any particular college or state. You can open a plan in any state and use the money at any accredited college in the United States or abroad. The state where you open the plan has no effect on where your child can study.

Can I open a 529 plan in a state where I do not live?

Yes. There are no residency requirements. You can open a plan in any state's 529 program. Some plans require a Social Security number or a U.S. address, but they do not require you to live in that state. This is why families in high-fee states often open plans in low-cost states like Utah or New York.