The Surprising State-by-State Differences in 529 Plan Returns (2026 Update)

529 plan returns aren’t uniform across the U.S., even when two plans hold nearly identical underlying funds. Maryland’s College Investment Plan delivered 9.06% over ten years. Florida’s returned 7.50%. Both figures come from Saving for College’s 2026 rankings and reflect net returns after fees, which is the number that actually matters.

May 2026 is a reasonable moment to reassess. Markets moved hard in 2025. Some plans captured that upside far better than others. This guide breaks down the real-world dollar impact of those gaps, examines what actually drives them, and helps you figure out whether switching plans would help or hurt your specific situation, tax incentives included. You’ll also find a method for projecting your own account growth using published data.

Why 529 Returns Vary Across States in 2026

Most people assume two plans holding Vanguard index funds must perform alike. They don’t. State program managers make independent calls on glide path aggressiveness, rebalancing schedules, and fee layering. Those decisions, not the underlying fund tickers, drive net return differences. The MSRB explicitly warns investors that account values fluctuate based on both market conditions and the specific mechanics of each plan’s underlying portfolio.

The strong 2025 equity market punished passive, fee-heavy plans and rewarded the aggressive ones. Plans that shifted heavier into equities early and rebalanced quarterly captured more of that run. Maryland did exactly that. Florida’s plan, with a more static glide path and a 0.55% fee ratio, lagged. Same broad market. Different outcome.

Management Choices Matter

Rebalancing frequency isn’t a minor detail. Maryland rebalances quarterly, locking in gains before drift erodes them. Florida rebalances annually, which sounds reasonable until you realize a year of drift in a trending market can cost real basis points. That timing difference, compounded over a decade, is precisely how a 1.56% gap grows, per ICI data.

The 2026 State Performance Snapshot

Geography doesn’t predict performance here. Maryland and Alaska lead at 9.06% and 9.00%. West Virginia’s SMART529 Select comes in at 8.54%. Iowa’s ISave 529 sits at 7.82%, and Florida closes out the bottom at 7.50%. All figures are net of fees, sourced from Saving for College’s ten-year rankings.

Notice that Alaska and West Virginia, not exactly financial powerhouses by reputation, beat states with far larger economies. Plan design, not state GDP, drives these numbers.

Market Conditions Amplify Gaps

Aggressive glide paths shine in bull markets. Maryland’s earlier pivot toward equities captured more of 2025’s upside. Florida’s slower shift meant less equity exposure during the same run. The ICI confirms this pattern: strong equity markets systematically widen the spread between top and bottom performers, and 2025 was no exception.

What Drives the Surprising Return Differences?

Three factors do most of the work: fee structure, glide path design, and rebalancing discipline. Fees are the easiest to quantify. Maryland’s 0.35% expense ratio versus Florida’s 0.55% looks like a rounding error. Over 18 years on a $20,000 starting balance, though, that 0.20% difference erodes more than $1,200 from the final account value. Compounding works against you when it’s fees doing the compounding.

The MSRB is blunt about this. Fees directly reduce returns, and plans using the same Fidelity or Vanguard fund family can still deliver meaningfully different net outcomes depending on what administrative and state-level fees get layered on top.

Do Higher Returns Warrant Switching Plans?

Not automatically. Tax deductions can outweigh return gaps fast. A California family contributing $5,000 annually and claiming a 5% state deduction pockets $250 per year in tax savings. That alone offsets a meaningful chunk of any performance gap.

Arizona’s state income tax deduction covers 100% of contributions up to $1,000 per year. For an Arizona resident, that benefit beats chasing Maryland’s extra 0.5% of return. On the flip side, New Jersey offers no 529 tax deduction at all. For a New Jersey family, switching to Maryland’s plan is straightforward math. Always confirm rollover rules first. You get one tax-free 529-to-529 transfer per beneficiary per calendar year, and rolling into an out-of-state plan means forfeiting any in-state deduction permanently.

Fees, Risk, and Consistency: Hidden Variables

A 0.10% fee difference on a $10,000 balance over 12 years quietly costs more than $500. Most families never notice it. That’s exactly how fee drag works.

Risk is the other side of the return story. Maryland’s aggressive equity positioning outperformed in 2025, but that same allocation drew down harder during the 2022 correction. Higher ten-year returns don’t mean smoother rides. A family with a child starting college in two years faces a very different risk profile than one with a newborn, and Maryland’s glide path may not suit the former.

Consistency Over Time

Past rankings aren’t guarantees. Some plans that topped the 2020 charts have since changed fund managers or restructured allocations, which reshuffles their long-term trajectory entirely. Use ICI statistics and Saving for College’s rolling rankings to watch for those shifts. Federal Reserve rate movements also matter for the bond portion of age-based portfolios, so fixed-income performance will look different in a high-rate environment than it did in 2020.

Practical Tips for Families Saving in May 2026

Start with your current plan’s annual report. Compare its ten-year net return against the Saving for College 2026 rankings. That one step tells you whether you’re in the conversation or getting left behind.

An Ohio family contributing $6,000 annually and claiming a $1,000 state tax deduction gets real value from staying in Ohio’s plan even if it trails Maryland by a point or two. Run the numbers with your actual contribution amount, your state’s deduction rate, and the fee gap before deciding anything. For a New Jersey or California family getting zero state tax benefit, the calculus tilts toward switching to a lower-fee, higher-performing plan like Maryland’s or Alaska’s.

One note on FDIC-insured accounts: 529 plans aren’t FDIC-insured. The MSRB is explicit that returns are not guaranteed, and a sharp equity correction can reduce your balance regardless of which plan you hold. That’s not a reason to avoid 529s. Tax-free growth is a powerful advantage. It’s just a reason to match your equity allocation to your actual time horizon.

Frequently Asked Questions

Are 529 plan returns guaranteed?

No. Market conditions can cause fluctuations. The MSRB states there’s no guarantee of return or meeting qualified education expenses.

Can I switch plans without losing tax benefits?

Yes, if you stay in-state. Switching to an out-of-state plan may eliminate your state’s tax deduction, but you can transfer funds between 529 plans without tax penalty, just once per year.

Do higher returns always mean better plans?

Not necessarily. High returns often come with higher volatility. Consistent, moderate growth may suit risk-averse families better than sharp swings.

How do fees affect long-term returns?

Fees compound over time. A 0.20% higher fee ratio can reduce your final balance by over $1k on a $20k investment over 18 years.

Is it worth switching if my state offers no tax break?

Yes, if your state offers no incentive like New Jersey or California. Switching to a high-performing plan with low fees can significantly boost savings.